{"id":442,"date":"2024-01-27T15:47:01","date_gmt":"2023-05-12T17:57:43","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8python-3%e4%b8%ad%e7%9a%84flask%e6%9d%a5%e5%88%b6%e4%bd%9c%e4%b8%80%e4%b8%aaweb%e5%ba%94%e7%94%a8\/"},"modified":"2025-08-02T09:38:10","modified_gmt":"2025-08-02T01:38:10","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8python-3%e4%b8%ad%e7%9a%84flask%e6%9d%a5%e5%88%b6%e4%bd%9c%e4%b8%80%e4%b8%aaweb%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8python-3%e4%b8%ad%e7%9a%84flask%e6%9d%a5%e5%88%b6%e4%bd%9c%e4%b8%80%e4%b8%aaweb%e5%ba%94%e7%94%a8\/","title":{"rendered":"Python Flask\u5b8c\u6574\u6307\u5357\uff1a\u5feb\u901f\u6784\u5efaWeb\u5e94\u7528\u7684\u5b9e\u7528\u6559\u7a0b"},"content":{"rendered":"<h3>\u5f15\u8a00<\/h3>\n<p>Flask\u662f\u4e00\u4e2a\u5c0f\u5de7\u4e14\u8f7b\u91cf\u7ea7\u7684Python Web\u6846\u67b6\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e9b\u6709\u7528\u7684\u5de5\u5177\u548c\u529f\u80fd\uff0c\u4f7f\u5f97\u4f7f\u7528Python\u521b\u5efaWeb\u5e94\u7528\u66f4\u52a0\u5bb9\u6613\u3002\u5b83\u7ed9\u5f00\u53d1\u8005\u63d0\u4f9b\u4e86\u7075\u6d3b\u6027\uff0c\u5bf9\u4e8e\u65b0\u624b\u5f00\u53d1\u8005\u6765\u8bf4\u662f\u4e00\u4e2a\u66f4\u6613\u4e0a\u624b\u7684\u6846\u67b6\uff0c\u56e0\u4e3a\u4f60\u53ef\u4ee5\u4ec5\u4ec5\u4f7f\u7528\u4e00\u4e2aPython\u6587\u4ef6\u5feb\u901f\u6784\u5efaWeb\u5e94\u7528\u3002Flask\u4e5f\u652f\u6301\u6269\u5c55\uff0c\u5e76\u4e14\u5728\u5f00\u59cb\u4e4b\u524d\u4e0d\u4f1a\u5f3a\u5236\u6307\u5b9a\u7279\u5b9a\u7684\u76ee\u5f55\u7ed3\u6784\u6216\u8981\u6c42\u590d\u6742\u7684\u6837\u677f\u4ee3\u7801\u3002<\/p>\n<p>\u4f5c\u4e3a\u672c\u6559\u7a0b\u7684\u4e00\u90e8\u5206\uff0c\u60a8\u5c06\u4f7f\u7528Bootstrap\u5de5\u5177\u5305\u6765\u4e3a\u5e94\u7528\u7a0b\u5e8f\u6dfb\u52a0\u6837\u5f0f\uff0c\u4f7f\u5176\u5728\u89c6\u89c9\u4e0a\u66f4\u5177\u5438\u5f15\u529b\u3002Bootstrap\u5c06\u5e2e\u52a9\u60a8\u5c06\u54cd\u5e94\u5f0f\u7f51\u9875\u6574\u5408\u5230\u60a8\u7684\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u800c\u65e0\u9700\u7f16\u5199\u81ea\u5df1\u7684HTML\u3001CSS\u548cJavaScript\u4ee3\u7801\u6765\u5b9e\u73b0\u8fd9\u4e9b\u76ee\u6807\u3002\u8be5\u5de5\u5177\u5305\u5c06\u8ba9\u60a8\u4e13\u6ce8\u4e8e\u5b66\u4e60Flask\u7684\u5de5\u4f5c\u539f\u7406\u3002<\/p>\n<p>Flask\u4f7f\u7528Jinja\u6a21\u677f\u5f15\u64ce\u6765\u52a8\u6001\u6784\u5efaHTML\u9875\u9762\uff0c\u4f7f\u7528Python\u4e2d\u5e38\u89c1\u7684\u6982\u5ff5\uff0c\u6bd4\u5982\u53d8\u91cf\u3001\u5faa\u73af\u3001\u5217\u8868\u7b49\u7b49\u3002\u5728\u8fd9\u4e2a\u9879\u76ee\u4e2d\uff0c\u4f60\u5c06\u4f1a\u4f7f\u7528\u8fd9\u4e9b\u6a21\u677f\u3002<\/p>\n<p>\u5728\u8fd9\u4e2a\u6559\u7a0b\u4e2d\uff0c\u60a8\u5c06\u4f7f\u7528Python 3\u4e2d\u7684Flask\u548cSQLite\u6784\u5efa\u4e00\u4e2a\u5c0f\u578b\u7684\u7f51\u9875\u535a\u5ba2\u3002\u5e94\u7528\u7a0b\u5e8f\u7684\u7528\u6237\u53ef\u4ee5\u67e5\u770b\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u5e16\u5b50\uff0c\u5e76\u70b9\u51fb\u5e16\u5b50\u7684\u6807\u9898\u6765\u67e5\u770b\u5176\u5185\u5bb9\u3002\u7528\u6237\u8fd8\u53ef\u4ee5\u6dfb\u52a0\u4e00\u7bc7\u65b0\u5e16\u5b50\u5230\u6570\u636e\u5e93\u4e2d\uff0c\u5e76\u7f16\u8f91\u6216\u5220\u9664\u73b0\u6709\u7684\u5e16\u5b50\u3002<\/p>\n<div class=\"post-conf-info\">\n<p class=\"post-info\">\u4fe1\u606f<\/p>\n<p class=\"post-conf-desc\">\u901a\u8fc7Silicon Cloud App\u5e73\u53f0\u7b80\u5316\u90e8\u7f72Flask\u5e94\u7528\u7a0b\u5e8f\u3002\u4ec5\u9700\u51e0\u5206\u949f\uff0c\u5373\u53ef\u4eceGitHub\u76f4\u63a5\u90e8\u7f72Flask\u3002<\/p>\n<\/div>\n<h2>\u5148\u51b3\u6761\u4ef6<\/h2>\n<p>\u5728\u60a8\u5f00\u59cb\u6309\u7167\u672c\u6307\u5357\u64cd\u4f5c\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u51c6\u5907\u4ee5\u4e0b\u7269\u54c1\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>\u4e00\u4e2a\u672c\u5730Python 3\u7f16\u7a0b\u73af\u5883\uff0c\u8bf7\u6309\u7167\u300a\u5982\u4f55\u5b89\u88c5\u548c\u8bbe\u7f6ePython 3\u672c\u5730\u7f16\u7a0b\u73af\u5883\u300b\u7cfb\u5217\u6559\u7a0b\u4e2d\u9488\u5bf9\u60a8\u53d1\u884c\u7248\u7684\u8bf4\u660e\u8fdb\u884c\u64cd\u4f5c\u3002\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u6211\u4eec\u7684\u9879\u76ee\u76ee\u5f55\u79f0\u4e3aflask_blog\u3002<\/li>\n<li>\u5bf9Python 3\u6982\u5ff5\u7684\u7406\u89e3\uff0c\u4f8b\u5982\u6570\u636e\u7c7b\u578b\u3001\u6761\u4ef6\u8bed\u53e5\u3001for\u5faa\u73af\u3001\u51fd\u6570\u7b49\u6982\u5ff5\u3002\u5982\u679c\u60a8\u4e0d\u719f\u6089Python\uff0c\u8bf7\u67e5\u770b\u6211\u4eec\u7684\u300aPython 3\u7f16\u7a0b\u6307\u5357\u300b\u7cfb\u5217\u3002<\/li>\n<\/ul>\n<h2>\u7b2c\u4e00\u6b65 \u2014 \u5b89\u88c5Flask<\/h2>\n<p>\u5728\u8fd9\u4e00\u6b65\u4e2d\uff0c\u60a8\u5c06\u6fc0\u6d3b\u60a8\u7684Python\u73af\u5883\u5e76\u4f7f\u7528pip\u8f6f\u4ef6\u5305\u5b89\u88c5\u5668\u5b89\u88c5Flask\u3002<\/p>\n<p>\u5982\u679c\u60a8\u8fd8\u6ca1\u6709\u6fc0\u6d3b\u7f16\u7a0b\u73af\u5883\uff0c\u8bf7\u786e\u4fdd\u60a8\u5df2\u7ecf\u5728\u9879\u76ee\u76ee\u5f55\uff08flask_blog\uff09\u4e2d\uff0c\u5e76\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6fc0\u6d3b\u73af\u5883\uff1a<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"$\"><span class=\"token builtin class-name\">source<\/span> <mark>env<\/mark>\/bin\/activate\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u4e00\u65e6\u60a8\u7684\u7f16\u7a0b\u73af\u5883\u88ab\u6fc0\u6d3b\uff0c\u60a8\u7684\u63d0\u793a\u7b26\u5c06\u4f1a\u5e26\u6709\u4e00\u4e2a\u73af\u5883\u524d\u7f00\uff0c\u53ef\u80fd\u4f1a\u663e\u793a\u5982\u4e0b\uff1a<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\">\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u524d\u7f00\u662f\u6307\u73af\u5883&#8221;env&#8221;\u5f53\u524d\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\uff0c\u5177\u4f53\u540d\u79f0\u53ef\u80fd\u56e0\u5176\u5728\u521b\u5efa\u65f6\u7684\u547d\u540d\u65b9\u5f0f\u800c\u5f02\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-note\">\u6ce8\u610f<\/p>\n<p class=\"post-conf-desc\">\u60a8\u53ef\u4ee5\u4f7f\u7528Git\uff0c\u4e00\u4e2a\u7248\u672c\u63a7\u5236\u7cfb\u7edf\uff0c\u6709\u6548\u5730\u7ba1\u7406\u548c\u8ddf\u8e2a\u60a8\u7684\u9879\u76ee\u7684\u5f00\u53d1\u8fc7\u7a0b\u3002\u8981\u4e86\u89e3\u5982\u4f55\u4f7f\u7528Git\uff0c\u60a8\u53ef\u4ee5\u67e5\u770b\u6211\u4eec\u7684\u300aGit\u5b89\u88c5\u4f7f\u7528\u548c\u5206\u652f\u7b80\u4ecb\u300b\u6587\u7ae0\u3002<br \/>\n  \u5982\u679c\u60a8\u6b63\u5728\u4f7f\u7528Git\uff0c\u5efa\u8bae\u5728.gitignore\u6587\u4ef6\u4e2d\u5ffd\u7565\u65b0\u521b\u5efa\u7684env\u76ee\u5f55\uff0c\u4ee5\u907f\u514d\u8ddf\u8e2a\u4e0e\u9879\u76ee\u65e0\u5173\u7684\u6587\u4ef6\u3002<\/p>\n<\/div>\n<p>\u73b0\u5728\u4f60\u5c06\u5b89\u88c5Python\u5305\u5e76\u5c06\u9879\u76ee\u4ee3\u7801\u4e0e\u4e3b\u8981\u7684Python\u7cfb\u7edf\u5b89\u88c5\u9694\u79bb\u5f00\u6765\u3002\u4f60\u5c06\u4f7f\u7528pip\u548cpython\u6765\u5b8c\u6210\u8fd9\u4e2a\u64cd\u4f5c\u3002<\/p>\n<p>\u8981\u5b89\u88c5Flask\uff0c\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\">pip <span class=\"token function\">install<\/span> flask\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u8bf7\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u786e\u8ba4\u5b89\u88c5\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\">python <span class=\"token parameter variable\">-c<\/span> <span class=\"token string\">\"import flask; print(flask.__version__)\"<\/span>\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528Python\u547d\u4ee4\u884c\u754c\u9762\uff0c\u5e76\u5e26\u4e0a\u9009\u9879-c\u6765\u6267\u884cPython\u4ee3\u7801\u3002\u63a5\u7740\uff0c\u4f7f\u7528import flask\u5bfc\u5165flask\u5305\uff1b\u7136\u540e\u901a\u8fc7flask.__version__\u53d8\u91cf\u6253\u5370Flask\u7684\u7248\u672c\u3002<\/p>\n<p>\u8f93\u51fa\u5c06\u662f\u7c7b\u4f3c\u4ee5\u4e0b\u7248\u672c\u53f7\u7684\u683c\u5f0f\uff1a<\/p>\n<pre class=\"post-pre\"><code><div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div><mark>1.1.2<\/mark><\/code><\/pre>\n<p>\u4f60\u5df2\u7ecf\u521b\u5efa\u4e86\u9879\u76ee\u6587\u4ef6\u5939\u3001\u865a\u62df\u73af\u5883\u5e76\u5b89\u88c5\u4e86Flask\u3002\u73b0\u5728\u4f60\u53ef\u4ee5\u5f00\u59cb\u8bbe\u7f6e\u4f60\u7684\u57fa\u7840\u5e94\u7528\u4e86\u3002<\/p>\n<h2>\u7b2c\u4e8c\u6b65 &#8211; \u521b\u5efa\u4e00\u4e2a\u57fa\u7840\u5e94\u7528\u7a0b\u5e8f<\/h2>\n<p>\u73b0\u5728\u4f60\u5df2\u7ecf\u8bbe\u7f6e\u597d\u4e86\u7f16\u7a0b\u73af\u5883\uff0c\u63a5\u4e0b\u6765\u4f60\u5c06\u5f00\u59cb\u4f7f\u7528Flask\u3002\u5728\u8fd9\u4e00\u6b65\u4e2d\uff0c\u4f60\u5c06\u5728\u4e00\u4e2aPython\u6587\u4ef6\u4e2d\u521b\u5efa\u4e00\u4e2a\u5c0f\u578b\u7684Web\u5e94\u7528\u7a0b\u5e8f\uff0c\u5e76\u8fd0\u884c\u5b83\u6765\u542f\u52a8\u670d\u52a1\u5668\uff0c\u670d\u52a1\u5668\u5c06\u5728\u6d4f\u89c8\u5668\u4e0a\u663e\u793a\u4e00\u4e9b\u4fe1\u606f\u3002<\/p>\n<p>\u5728\u4f60\u7684flask_blog\u76ee\u5f55\u4e2d\uff0c\u6253\u5f00\u4e00\u4e2a\u540d\u4e3ahello.py\u7684\u6587\u4ef6\u8fdb\u884c\u7f16\u8f91\uff0c\u53ef\u4ee5\u4f7f\u7528nano\u6216\u4f60\u559c\u6b22\u7684\u6587\u672c\u7f16\u8f91\u5668\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> hello.py\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a hello.py \u6587\u4ef6\u5c06\u4f5c\u4e3a\u5904\u7406 HTTP \u8bf7\u6c42\u7684\u6700\u7b80\u5355\u793a\u4f8b\u3002\u5728\u5b83\u5185\u90e8\uff0c\u4f60\u5c06\u4f1a\u5bfc\u5165 Flask \u5bf9\u8c61\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u8fd4\u56de HTTP \u54cd\u5e94\u7684\u51fd\u6570\u3002\u5728 hello.py \u4e2d\u7f16\u5199\u4ee5\u4e0b\u4ee3\u7801\u3002<\/p>\n<p><strong>flask_blog\/hello.py<\/strong><\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">from<\/span> flask <span class=\"token keyword\">import<\/span> Flask\r\n\r\napp <span class=\"token operator\">=<\/span> Flask<span class=\"token punctuation\">(<\/span>__name__<span class=\"token punctuation\">)<\/span>\r\n\r\n\r\n<span class=\"token decorator annotation punctuation\">@app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'\/'<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">hello<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span>\r\n    <span class=\"token keyword\">return<\/span> <span class=\"token string\">'\u4f60\u597d\uff0c\u4e16\u754c\uff01'<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u524d\u9762\u7684\u4ee3\u7801\u5757\u4e2d\uff0c\u4f60\u9996\u5148\u4eceflask\u5305\u4e2d\u5bfc\u5165Flask\u5bf9\u8c61\u3002\u7136\u540e\uff0c\u4f60\u4f7f\u7528\u5b83\u6765\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aapp\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u5b9e\u4f8b\u3002\u4f60\u4f20\u9012\u4e86\u4e00\u4e2a\u7279\u6b8a\u7684\u53d8\u91cf__name__\uff0c\u5b83\u4fdd\u5b58\u7740\u5f53\u524dPython\u6a21\u5757\u7684\u540d\u79f0\u3002\u8fd9\u7528\u4e8e\u544a\u8bc9\u5b9e\u4f8b\u5b83\u6240\u5728\u7684\u4f4d\u7f6e\uff0c\u56e0\u4e3aFlask\u5728\u5e55\u540e\u8bbe\u7f6e\u4e86\u4e00\u4e9b\u8def\u5f84\uff0c\u4f60\u9700\u8981\u8fd9\u4e2a\u4fe1\u606f\u3002<\/p>\n<p>\u521b\u5efa\u5e94\u7528\u5b9e\u4f8b\u540e\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u5904\u7406\u4f20\u5165\u7684\u7f51\u7edc\u8bf7\u6c42\u5e76\u5411\u7528\u6237\u53d1\u9001\u54cd\u5e94\u3002@app.route\u662f\u4e00\u4e2a\u88c5\u9970\u5668\uff0c\u5b83\u5c06\u666e\u901a\u7684Python\u51fd\u6570\u8f6c\u6362\u4e3aFlask\u89c6\u56fe\u51fd\u6570\uff0c\u5c06\u51fd\u6570\u7684\u8fd4\u56de\u503c\u8f6c\u6362\u4e3aHTTP\u54cd\u5e94\uff0c\u4ee5\u4fbf\u7531HTTP\u5ba2\u6237\u7aef\uff08\u4f8b\u5982Web\u6d4f\u89c8\u5668\uff09\u663e\u793a\u3002\u60a8\u5c06\u503c&#8217;\/&#8217;\u4f20\u9012\u7ed9@app.route()\uff0c\u8868\u793a\u6b64\u51fd\u6570\u5c06\u54cd\u5e94URL\u4e3a\/\u7684\u7f51\u7edc\u8bf7\u6c42\uff0c\u5373\u4e3bURL\u3002<\/p>\n<p>hello()\u89c6\u56fe\u51fd\u6570\u4f5c\u4e3a\u54cd\u5e94\u8fd4\u56de\u5b57\u7b26\u4e32&#8221;\u4f60\u597d\uff0c\u4e16\u754c\uff01&#8221;<\/p>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u4e3a\u4e86\u8fd0\u884c\u60a8\u7684\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f\uff0c\u60a8\u9996\u5148\u9700\u8981\u544a\u8bc9Flask\u5e94\u7528\u7a0b\u5e8f\u5728\u54ea\u91cc\u627e\u5230\uff08\u5728\u60a8\u7684\u60c5\u51b5\u4e0b\u662fhello.py\u6587\u4ef6\uff09\uff0c\u4f7f\u7528FLASK_APP\u73af\u5883\u53d8\u91cf\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token builtin class-name\">export<\/span> <span class=\"token assign-left variable\">FLASK_APP<\/span><span class=\"token operator\">=<\/span>hello\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u7136\u540e\u5728\u5f00\u53d1\u6a21\u5f0f\u4e0b\u8fd0\u884c\uff0c\u4f7f\u7528FLASK_ENV\u73af\u5883\u53d8\u91cf\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token builtin class-name\">export<\/span> <span class=\"token assign-left variable\">FLASK_ENV<\/span><span class=\"token operator\">=<\/span>development\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u6700\u540e\uff0c\u4f7f\u7528flask run\u547d\u4ee4\u8fd0\u884c\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\">flask run\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u4e00\u65e6\u5e94\u7528\u7a0b\u5e8f\u8fd0\u884c\uff0c\u8f93\u51fa\u4f1a\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n<pre class=\"post-pre\"><code><div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\r\n * Serving Flask app \"hello\" (lazy loading)\r\n * Environment: development\r\n * Debug mode: on\r\n * Running on http:\/\/127.0.0.1:5000\/ (Press CTRL+C to quit)\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><div class=\"secondary-code-label\" title=\"\u8f93\u51fa\">\u8f93\u51fa* Serving Flask app \"hello\" (lazy loading)\r\n * Environment: development\r\n * Debug mode: on\r\n * Running on http:\/\/127.0.0.1:5000\/ (Press CTRL+C to quit)\r\n * Restarting with stat\r\n * Debugger is active!\r\n * Debugger PIN: 813-894-335\r\n<\/code><\/pre>\n<p>\u524d\u9762\u7684\u8f93\u51fa\u5305\u542b\u4e86\u51e0\u4e2a\u4fe1\u606f\uff0c\u6bd4\u5982\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>\u60a8\u6b63\u5728\u8fd0\u884c\u7684\u5e94\u7528\u7a0b\u5e8f\u540d\u79f0\u3002<\/li>\n<li>\u5e94\u7528\u7a0b\u5e8f\u6b63\u5728\u8fd0\u884c\u7684\u73af\u5883\u3002<\/li>\n<li>\u8c03\u8bd5\u6a21\u5f0f\uff1a\u5f00\u542f\u8868\u793aFlask\u8c03\u8bd5\u5668\u6b63\u5728\u8fd0\u884c\u3002\u8fd9\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u56e0\u4e3a\u5f53\u51fa\u73b0\u95ee\u9898\u65f6\uff0c\u5b83\u4f1a\u63d0\u4f9b\u8be6\u7ec6\u7684\u9519\u8bef\u4fe1\u606f\uff0c\u4f7f\u6545\u969c\u6392\u9664\u66f4\u52a0\u5bb9\u6613\u3002<\/li>\n<li>\u5e94\u7528\u7a0b\u5e8f\u5728\u672c\u5730URL http:\/\/127.0.0.1:5000\/ \u4e0a\u8fd0\u884c\uff0c\u5176\u4e2d127.0.0.1 \u662f\u4ee3\u8868\u60a8\u672c\u5730\u4e3b\u673a\u7684IP\u5730\u5740\uff0c\u800c:5000 \u662f\u7aef\u53e3\u53f7\u3002<\/li>\n<\/ul>\n<p>\u5728\u6d4f\u89c8\u5668\u4e2d\u6253\u5f00\u5e76\u8f93\u5165\u7f51\u5740http:\/\/127.0.0.1:5000\/\uff0c\u4f60\u5c06\u6536\u5230\u5b57\u7b26\u4e32&#8221;Hello, World!&#8221;\u4f5c\u4e3a\u54cd\u5e94\uff0c\u8fd9\u8868\u660e\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u6210\u529f\u8fd0\u884c\u3002<\/p>\n<div class=\"post-conf-warning\">\n<p class=\"post-warning\">\n<p class=\"post-conf-desc\">\u8b66\u544a<\/p>\n<div>\u8b66\u544a\uff1aFlask\u5728\u5f00\u53d1\u73af\u5883\u4e2d\u4f7f\u7528\u4e00\u4e2a\u7b80\u5355\u7684Web\u670d\u52a1\u5668\u6765\u63d0\u4f9b\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u8fd9\u4e5f\u610f\u5473\u7740Flask\u8c03\u8bd5\u5668\u6b63\u5728\u8fd0\u884c\u4ee5\u4fbf\u66f4\u5bb9\u6613\u5730\u6355\u83b7\u9519\u8bef\u3002\u8fd9\u4e2a\u5f00\u53d1\u670d\u52a1\u5668\u4e0d\u5e94\u8be5\u5728\u751f\u4ea7\u90e8\u7f72\u4e2d\u4f7f\u7528\u3002\u8bf7\u53c2\u9605Flask\u6587\u6863\u4e2d\u7684\u90e8\u7f72\u9009\u9879\u9875\u9762\uff0c\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff0c\u4f60\u4e5f\u53ef\u4ee5\u67e5\u770b\u8fd9\u4e2aFlask\u90e8\u7f72\u6559\u7a0b\u3002<\/div>\n<\/div>\n<p>\u4f60\u73b0\u5728\u53ef\u4ee5\u5c06\u5f00\u53d1\u670d\u52a1\u5668\u4fdd\u6301\u5728\u7ec8\u7aef\u4e2d\u8fd0\u884c\uff0c\u5e76\u6253\u5f00\u53e6\u4e00\u4e2a\u7ec8\u7aef\u7a97\u53e3\u3002\u8fdb\u5165\u5b58\u653ehello.py\u7684\u9879\u76ee\u6587\u4ef6\u5939\uff0c\u6fc0\u6d3b\u865a\u62df\u73af\u5883\uff0c\u8bbe\u7f6e\u73af\u5883\u53d8\u91cfFLASK_ENV\u548cFLASK_APP\uff0c\u7136\u540e\u7ee7\u7eed\u8fdb\u884c\u4e0b\u4e00\u6b65\u3002\uff08\u8fd9\u4e9b\u547d\u4ee4\u5728\u6b64\u6b65\u9aa4\u4e2d\u5df2\u7ecf\u5217\u51fa\u3002\uff09<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-note\">\n<p class=\"post-conf-desc\">\u6ce8\u610f<\/p>\n<div>\u6ce8\u610f\uff1a\u5f53\u6253\u5f00\u4e00\u4e2a\u65b0\u7684\u7ec8\u7aef\u65f6\uff0c\u91cd\u8981\u7684\u662f\u8981\u8bb0\u4f4f\u6fc0\u6d3b\u865a\u62df\u73af\u5883\u5e76\u8bbe\u7f6e\u73af\u5883\u53d8\u91cfFLASK_ENV\u548cFLASK_APP\u3002<\/div>\n<\/div>\n<p>\u5f53\u4e00\u4e2aFlask\u5e94\u7528\u7684\u5f00\u53d1\u670d\u52a1\u5668\u6b63\u5728\u8fd0\u884c\u65f6\uff0c\u4e0d\u53ef\u80fd\u4f7f\u7528\u76f8\u540c\u7684flask run\u547d\u4ee4\u8fd0\u884c\u53e6\u4e00\u4e2aFlask\u5e94\u7528\u3002\u8fd9\u662f\u56e0\u4e3aflask run\u9ed8\u8ba4\u4f7f\u7528\u7aef\u53e3\u53f75000\uff0c\u4e00\u65e6\u88ab\u5360\u7528\uff0c\u5c31\u4e0d\u80fd\u518d\u8fd0\u884c\u53e6\u4e00\u4e2a\u5e94\u7528\uff0c\u5426\u5219\u4f1a\u6536\u5230\u7c7b\u4f3c\u4ee5\u4e0b\u9519\u8bef\u7684\u63d0\u793a\uff1a<\/p>\n<pre class=\"post-pre\"><code>\u8f93\u51faOSError: [Errno 98] Address already in use<\/code><\/pre>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u901a\u8fc7\u6309\u4e0bCTRL+C\u505c\u6b62\u5f53\u524d\u8fd0\u884c\u7684\u670d\u52a1\u5668\uff0c\u7136\u540e\u518d\u6b21\u8fd0\u884cflask run\uff1b\u6216\u8005\u5982\u679c\u60f3\u540c\u65f6\u8fd0\u884c\u4e24\u8005\uff0c\u53ef\u4ee5\u5c06\u4e00\u4e2a\u4e0d\u540c\u7684\u7aef\u53e3\u53f7\u4f20\u9012\u7ed9-p\u53c2\u6570\uff0c\u4f8b\u5982\uff0c\u8981\u5728\u7aef\u53e3\u53f75001\u4e0a\u8fd0\u884c\u53e6\u4e00\u4e2a\u5e94\u7528\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre class=\"post-pre\"><code>flask run -p 5001<\/code><\/pre>\n<p>\u4f60\u73b0\u5728\u6709\u4e00\u4e2a\u5c0f\u7684Flask Web\u5e94\u7528\u7a0b\u5e8f\u3002\u4f60\u5df2\u7ecf\u8fd0\u884c\u4e86\u5e94\u7528\u7a0b\u5e8f\u5e76\u5728Web\u6d4f\u89c8\u5668\u4e0a\u663e\u793a\u4e86\u4fe1\u606f\u3002\u63a5\u4e0b\u6765\uff0c\u4f60\u5c06\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528HTML\u6587\u4ef6\u3002<\/p>\n<h2>\u6b65\u9aa43 \u2014 \u4f7f\u7528HTML\u6a21\u677f<\/h2>\n<p>\u76ee\u524d\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u53ea\u663e\u793a\u4e00\u4e2a\u7b80\u5355\u7684\u6d88\u606f\uff0c\u6ca1\u6709\u4efb\u4f55HTML\u3002Web\u5e94\u7528\u7a0b\u5e8f\u4e3b\u8981\u4f7f\u7528HTML\u6765\u663e\u793a\u8bbf\u95ee\u8005\u7684\u4fe1\u606f\uff0c\u56e0\u6b64\u60a8\u73b0\u5728\u9700\u8981\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u6dfb\u52a0HTML\u6587\u4ef6\uff0c\u4ee5\u4fbf\u5728Web\u6d4f\u89c8\u5668\u4e0a\u663e\u793a\u3002<\/p>\n<p>Flask\u63d0\u4f9b\u4e86\u4e00\u4e2arender_template()\u7684\u8f85\u52a9\u51fd\u6570\uff0c\u5b83\u5141\u8bb8\u4f7f\u7528Jinja\u6a21\u677f\u5f15\u64ce\u3002\u901a\u8fc7\u5728.html\u6587\u4ef6\u4e2d\u7f16\u5199HTML\u4ee3\u7801\u5e76\u5728HTML\u4ee3\u7801\u4e2d\u4f7f\u7528\u903b\u8f91\uff0c\u53ef\u4ee5\u66f4\u8f7b\u677e\u5730\u7ba1\u7406HTML\u3002\u60a8\u5c06\u4f7f\u7528\u8fd9\u4e9bHTML\u6587\u4ef6\u6a21\u677f\u6765\u6784\u5efa\u5e94\u7528\u7a0b\u5e8f\u7684\u6240\u6709\u9875\u9762\uff0c\u4f8b\u5982\u663e\u793a\u5f53\u524d\u535a\u5ba2\u6587\u7ae0\u7684\u4e3b\u9875\uff0c\u535a\u5ba2\u6587\u7ae0\u9875\u9762\uff0c\u7528\u6237\u53ef\u4ee5\u6dfb\u52a0\u65b0\u6587\u7ae0\u7684\u9875\u9762\u7b49\u7b49\u3002<\/p>\n<p>\u5728\u8fd9\u4e00\u6b65\u4e2d\uff0c\u4f60\u5c06\u5728\u4e00\u4e2a\u65b0\u6587\u4ef6\u4e2d\u521b\u5efa\u4f60\u7684\u4e3b\u8981 Flask \u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<p>\u9996\u5148\uff0c\u5728\u4f60\u7684flask_blog\u76ee\u5f55\u4e2d\uff0c\u4f7f\u7528nano\u6216\u4f60\u559c\u6b22\u7684\u7f16\u8f91\u5668\u521b\u5efa\u5e76\u7f16\u8f91app.py\u6587\u4ef6\u3002\u8fd9\u4e2a\u6587\u4ef6\u5c06\u4fdd\u5b58\u4f60\u7528\u4e8e\u521b\u5efa\u535a\u5ba2\u5e94\u7528\u7a0b\u5e8f\u7684\u6240\u6709\u4ee3\u7801\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> app.py<\/li><\/ol><\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u65b0\u7684\u6587\u4ef6\u4e2d\uff0c\u4f60\u5c06\u5bfc\u5165 Flask \u5bf9\u8c61\u4ee5\u521b\u5efa\u4e00\u4e2a Flask \u5e94\u7528\u5b9e\u4f8b\uff0c\u5c31\u50cf\u4e4b\u524d\u505a\u8fc7\u7684\u4e00\u6837\u3002\u4f60\u8fd8\u5c06\u5bfc\u5165 render_template() \u8f85\u52a9\u51fd\u6570\uff0c\u8fd9\u4e2a\u51fd\u6570\u53ef\u4ee5\u8ba9\u4f60\u6e32\u67d3\u5b58\u5728\u4e8e\u5373\u5c06\u521b\u5efa\u7684\u6a21\u677f\u6587\u4ef6\u5939\u4e2d\u7684 HTML \u6a21\u677f\u6587\u4ef6\u3002\u6587\u4ef6\u5c06\u5305\u542b\u4e00\u4e2a\u5355\u4e00\u7684\u89c6\u56fe\u51fd\u6570\uff0c\u8d1f\u8d23\u5904\u7406\u5bf9\u4e3b\u8981\u7684 \/ \u8def\u7531\u7684\u8bf7\u6c42\u3002\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<div>flask_blog\/app.py<\/div>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">from<\/span> flask <span class=\"token keyword\">import<\/span> Flask<span class=\"token punctuation\">,<\/span> render_template\r\n\r\napp <span class=\"token operator\">=<\/span> Flask<span class=\"token punctuation\">(<\/span>__name__<span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token decorator annotation punctuation\">@app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'\/'<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">index<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span>\r\n    <span class=\"token keyword\">return<\/span> render_template<span class=\"token punctuation\">(<\/span><span class=\"token string\">'index.html'<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>index()\u89c6\u56fe\u51fd\u6570\u8fd4\u56de\u8c03\u7528render_template\uff08\uff09\u51fd\u6570\u5e76\u5c06index.html\u4f5c\u4e3a\u53c2\u6570\u7684\u7ed3\u679c\uff0c\u8fd9\u4f1a\u544a\u8bc9render_template\uff08\uff09\u5728templates\u6587\u4ef6\u5939\u4e2d\u67e5\u627e\u540d\u4e3aindex.html\u7684\u6587\u4ef6\u3002\u7136\u800c\uff0c\u73b0\u5728\u8fd9\u4e2a\u6587\u4ef6\u5939\u548c\u6587\u4ef6\u90fd\u4e0d\u5b58\u5728\uff0c\u5982\u679c\u4f60\u5728\u8fd9\u4e00\u70b9\u4e0a\u8fd0\u884c\u5e94\u7528\u7a0b\u5e8f\uff0c\u4f60\u5c06\u4f1a\u5f97\u5230\u4e00\u4e2a\u9519\u8bef\u3002\u5c3d\u7ba1\u5982\u6b64\uff0c\u4f60\u4ecd\u7136\u4f1a\u8fd0\u884c\u5b83\uff0c\u4ee5\u4fbf\u719f\u6089\u8fd9\u4e2a\u5e38\u89c1\u7684\u5f02\u5e38\u60c5\u51b5\u3002\u7136\u540e\uff0c\u4f60\u4f1a\u901a\u8fc7\u521b\u5efa\u6240\u9700\u7684\u6587\u4ef6\u5939\u548c\u6587\u4ef6\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<p>\u4fdd\u5b58\u5e76\u9000\u51fa\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u8fd0\u884c Hello \u5e94\u7528\u7a0b\u5e8f\u7684\u53e6\u4e00\u4e2a\u7ec8\u7aef\u4e2d\uff0c\u4f7f\u7528 CTRL+C \u505c\u6b62\u5f00\u53d1\u670d\u52a1\u5668\u3002<\/p>\n<p>\u5728\u8fd0\u884c\u5e94\u7528\u7a0b\u5e8f\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u6b63\u786e\u6307\u5b9aFLASK_APP\u73af\u5883\u53d8\u91cf\u7684\u503c\uff0c\u56e0\u4e3a\u60a8\u4e0d\u518d\u4f7f\u7528\u5e94\u7528\u7a0b\u5e8fhello\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token builtin class-name\">export<\/span> <span class=\"token assign-left variable\">FLASK_APP<\/span><span class=\"token operator\">=<\/span>app<\/li><li data-prefix=\"(env)sammy@localhost:$\">flask run<\/li><\/ol><\/code><\/pre>\n<p>\u5728\u6d4f\u89c8\u5668\u4e2d\u6253\u5f00URL http:\/\/127.0.0.1:5000\/\uff0c\u5c06\u4f1a\u663e\u793a\u8c03\u8bd5\u5668\u9875\u9762\uff0c\u5e76\u544a\u77e5\u4f60\u672a\u627e\u5230index.html\u6a21\u677f\u3002\u4ee3\u7801\u4e2d\u5f15\u8d77\u8be5\u9519\u8bef\u7684\u4e3b\u8981\u884c\u5c06\u88ab\u7a81\u51fa\u663e\u793a\uff0c\u672c\u4f8b\u4e2d\u662freturn render_template(&#8216;index.html&#8217;)\u8fd9\u4e00\u884c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u70b9\u51fb\u8fd9\u4e00\u884c\uff0c\u8c03\u8bd5\u5668\u5c06\u4f1a\u663e\u793a\u66f4\u591a\u7684\u4ee3\u7801\uff0c\u8fd9\u6837\u60a8\u5c31\u80fd\u83b7\u5f97\u66f4\u591a\u7684\u4e0a\u4e0b\u6587\u6765\u5e2e\u52a9\u60a8\u89e3\u51b3\u95ee\u9898\u3002<\/p>\n<div><img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65645093a4b2f92e6c72003f\/69-0.png\" class='post-images' alt=\"Flask\u8c03\u8bd5\u5668\" title=\"\"><\/div>\n<p>\u8981\u4fee\u590d\u8fd9\u4e2a\u9519\u8bef\uff0c\u5728\u4f60\u7684flask_blog\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3atemplates\u7684\u6587\u4ef6\u5939\u3002\u7136\u540e\u5728\u5176\u4e2d\u6253\u5f00\u4e00\u4e2a\u540d\u4e3aindex.html\u7684\u6587\u4ef6\u8fdb\u884c\u7f16\u8f91\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">mkdir<\/span> templates<\/li><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> templates\/index.html<\/li><\/ol><\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u5728index.html\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0bHTML\u4ee3\u7801:<\/p>\n<pre class=\"post-pre\"><code><span class=\"token doctype\"><span class=\"token punctuation\">&lt;!<\/span><span class=\"token doctype-tag\">DOCTYPE<\/span> <span class=\"token name\">html<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>html<\/span> <span class=\"token attr-name\">lang<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>zh-CN<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>meta<\/span> <span class=\"token attr-name\">charset<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>UTF-8<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Flask\u535a\u5ba2<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>body<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n   <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u6b22\u8fce\u6765\u5230Flask\u535a\u5ba2<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>body<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>html<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u6587\u4ef6\u5e76\u4f7f\u7528\u6d4f\u89c8\u5668\u5bfc\u822a\u5230 http:\/\/127.0.0.1:5000\/\uff0c\u6216\u5237\u65b0\u9875\u9762\u3002\u6b64\u65f6\u6d4f\u89c8\u5668\u5e94\u8be5\u5728\u4e00\u4e2a&lt;h1&gt;\u6807\u7b7e\u4e2d\u663e\u793a\u6587\u5b57&#8221;\u6b22\u8fce\u6765\u5230Flask\u535a\u5ba2&#8221;\u3002<\/p>\n<p>\u9664\u4e86\u6a21\u677f\u6587\u4ef6\u5939\uff0cFlask Web\u5e94\u7528\u901a\u5e38\u8fd8\u6709\u4e00\u4e2a\u7528\u4e8e\u6258\u7ba1\u9759\u6001\u6587\u4ef6\u7684\u9759\u6001\u6587\u4ef6\u5939\uff0c\u4f8b\u5982CSS\u6587\u4ef6\u3001JavaScript\u6587\u4ef6\u548c\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u7684\u56fe\u7247\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2astyle.css\u6837\u5f0f\u8868\u6587\u4ef6\u6765\u4e3a\u4f60\u7684\u5e94\u7528\u6dfb\u52a0CSS\u6837\u5f0f\u3002\u9996\u5148\uff0c\u5728\u4f60\u7684\u4e3bflask_blog\u76ee\u5f55\u4e2d\u521b\u5efa\u4e00\u4e2a\u540d\u4e3astatic\u7684\u6587\u4ef6\u5939\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">mkdir<\/span> static\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u7136\u540e\u5728static\u76ee\u5f55\u4e2d\u521b\u5efa\u4e00\u4e2a\u540d\u4e3acss\u7684\u6587\u4ef6\u5939\u6765\u5b58\u653e.css\u6587\u4ef6\u3002\u901a\u5e38\u4f1a\u8fd9\u6837\u505a\u6765\u5c06\u9759\u6001\u6587\u4ef6\u7ec4\u7ec7\u5230\u4e13\u7528\u7684\u6587\u4ef6\u5939\u4e2d\uff0c\u56e0\u6b64JavaScript\u6587\u4ef6\u901a\u5e38\u5b58\u653e\u5728\u4e00\u4e2a\u540d\u4e3ajs\u7684\u6587\u4ef6\u5939\u4e2d\uff0c\u56fe\u7247\u5219\u653e\u5728\u4e00\u4e2a\u540d\u4e3aimages\uff08\u6216img\uff09\u7684\u6587\u4ef6\u5939\u4e2d\u7b49\u7b49\u3002\u4e0b\u9762\u7684\u547d\u4ee4\u5c06\u5728static\u76ee\u5f55\u4e2d\u521b\u5efacss\u6587\u4ef6\u5939\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">mkdir<\/span> static\/css\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u7136\u540e\u6253\u5f00\u4f4d\u4e8ecss\u76ee\u5f55\u5185\u7684style.css\u6587\u4ef6\u8fdb\u884c\u7f16\u8f91\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> static\/css\/style.css\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u5c06\u4e0b\u9762\u7684CSS\u89c4\u5219\u6dfb\u52a0\u5230\u4f60\u7684style.css\u6587\u4ef6\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token selector\">h1<\/span> <span class=\"token punctuation\">{<\/span>\r\n    <span class=\"token property\">border<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">2<\/span><span class=\"token unit\">px<\/span> <span class=\"token hexcode color\">#eee<\/span> solid<span class=\"token punctuation\">;<\/span>\r\n    <span class=\"token property\">color<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token color\">brown<\/span><span class=\"token punctuation\">;<\/span>\r\n    <span class=\"token property\">text-align<\/span><span class=\"token punctuation\">:<\/span> center<span class=\"token punctuation\">;<\/span>\r\n    <span class=\"token property\">padding<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">10<\/span><span class=\"token unit\">px<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6bb5CSS\u4ee3\u7801\u5c06\u7ed9&lt;h1&gt;\u6807\u7b7e\u6dfb\u52a0\u8fb9\u6846\u3001\u5c06\u989c\u8272\u6539\u4e3a\u68d5\u8272\u3001\u5c45\u4e2d\u6587\u672c\uff0c\u5e76\u4e3a\u5176\u6dfb\u52a0\u5c11\u8bb8\u5185\u8fb9\u8ddd\u3002<\/p>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6253\u5f00index.html\u6a21\u677f\u6587\u4ef6\u8fdb\u884c\u7f16\u8f91\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> templates\/index.html\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u4f60\u8981\u5728index.html\u6a21\u677f\u6587\u4ef6\u7684&lt;head&gt;\u90e8\u5206\u4e2d\u6dfb\u52a0\u4e00\u4e2astyle.css\u6587\u4ef6\u7684\u94fe\u63a5\u3002<\/p>\n<pre class=\"post-pre\"><code>. . .\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>meta<\/span> <span class=\"token attr-name\">charset<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>UTF-8<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <mark><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>link<\/span> <span class=\"token attr-name\">rel<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>stylesheet<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">href<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>{{ url_for('static', filename='css\/style.css') }}<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/mark>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Flask\u535a\u5ba2<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n. . .\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\uff0c\u60a8\u4f7f\u7528url_for()\u8f85\u52a9\u51fd\u6570\u6765\u751f\u6210\u6587\u4ef6\u7684\u6b63\u786e\u4f4d\u7f6e\u3002\u7b2c\u4e00\u4e2a\u53c2\u6570\u6307\u5b9a\u60a8\u6b63\u5728\u94fe\u63a5\u5230\u4e00\u4e2a\u9759\u6001\u6587\u4ef6\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u9759\u6001\u76ee\u5f55\u5185\u6587\u4ef6\u7684\u8def\u5f84\u3002<\/p>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5f53\u60a8\u5237\u65b0\u5e94\u7528\u7a0b\u5e8f\u7684\u9996\u9875\u65f6\uff0c\u60a8\u4f1a\u6ce8\u610f\u5230&#8221;\u6b22\u8fce\u6765\u5230Flask\u535a\u5ba2&#8221;\u7684\u6587\u672c\u73b0\u5728\u662f\u68d5\u8272\u7684\uff0c\u5c45\u4e2d\u663e\u793a\uff0c\u5e76\u88ab\u4e00\u4e2a\u8fb9\u6846\u5305\u56f4\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528CSS\u8bed\u8a00\u6765\u4e3a\u5e94\u7528\u7a0b\u5e8f\u6dfb\u52a0\u6837\u5f0f\u5e76\u4f7f\u7528\u81ea\u5df1\u7684\u8bbe\u8ba1\u4f7f\u5176\u66f4\u5177\u5438\u5f15\u529b\u3002\u7136\u800c\uff0c\u5982\u679c\u60a8\u4e0d\u662f\u7f51\u9875\u8bbe\u8ba1\u5e08\uff0c\u6216\u8005\u4e0d\u719f\u6089CSS\uff0c\u90a3\u4e48\u60a8\u53ef\u4ee5\u4f7f\u7528Bootstrap\u5de5\u5177\u5305\u6765\u63d0\u4f9b\u6613\u4e8e\u4f7f\u7528\u7684\u7ec4\u4ef6\u6765\u4e3a\u5e94\u7528\u7a0b\u5e8f\u6dfb\u52a0\u6837\u5f0f\u3002\u5728\u8fd9\u4e2a\u9879\u76ee\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Bootstrap\u3002<\/p>\n<p>\u60a8\u53ef\u80fd\u5df2\u7ecf\u731c\u5230\u4e86\uff0c\u521b\u5efa\u53e6\u4e00\u4e2aHTML\u6a21\u677f\u610f\u5473\u7740\u9700\u8981\u91cd\u590d\u7f16\u5199index.html\u6a21\u677f\u4e2d\u5df2\u6709\u7684\u5927\u90e8\u5206HTML\u4ee3\u7801\u3002\u60a8\u53ef\u4ee5\u501f\u52a9\u4e00\u4e2a\u57fa\u7840\u6a21\u677f\u6587\u4ef6\u6765\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u4ee3\u7801\u91cd\u590d\uff0c\u6240\u6709HTML\u6587\u4ef6\u90fd\u5c06\u7ee7\u627f\u8be5\u57fa\u7840\u6a21\u677f\u6587\u4ef6\u3002\u8bf7\u67e5\u770bJinja\u4e2d\u7684\u6a21\u677f\u7ee7\u627f\u4ee5\u83b7\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n<p>\u4e3a\u4e86\u5236\u4f5c\u57fa\u672c\u6a21\u677f\uff0c\u9996\u5148\u5728\u60a8\u7684\u6a21\u677f\u76ee\u5f55\u4e2d\u521b\u5efa\u4e00\u4e2a\u540d\u4e3abase.html\u7684\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> templates\/base.html\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u5728\u60a8\u7684base.html\u6a21\u677f\u4e2d\u952e\u5165\u4ee5\u4e0b\u4ee3\u7801\u3002<\/p>\n<div>\u57fa\u4e8eFlask\u7684\u535a\u5ba2\u6a21\u677f\u7684HTML\u6587\u4ef6\u3002<\/div>\n<pre class=\"post-pre\"><code><!doctype html>\r\n<html lang=\"zh-CN\">\r\n  <head>\r\n    <!-- \u5fc5\u9700\u7684meta\u6807\u7b7e -->\r\n    <meta charset=\"utf-8\">\r\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1, shrink-to-fit=no\">\r\n\r\n    <!-- Bootstrap CSS -->\r\n    <link rel=\"stylesheet\" href=\"https:\/\/stackpath.bootstrapcdn.com\/bootstrap\/4.3.1\/css\/bootstrap.min.css\" integrity=\"sha384-ggOyR0iXCbMQv3Xipma34MD+dH\/1fQ784\/j6cY\/iJTQUOhcWr7x9JvoRxT2MZw1T\" crossorigin=\"anonymous\">\r\n\r\n    <title><mark>{% block title %} {% endblock %}<\/mark><\/title>\r\n  <\/head>\r\n  <body>\r\n    <nav class=\"navbar navbar-expand-md navbar-light bg-light\">\r\n        <a class=\"navbar-brand\" href=\"<mark>{{ url_for('index')}}<\/mark>\">FlaskBlog<\/a>\r\n        <button class=\"navbar-toggler\" type=\"button\" data-toggle=\"collapse\" data-target=\"#navbarNav\" aria-controls=\"navbarNav\" aria-expanded=\"false\" aria-label=\"\u5207\u6362\u5bfc\u822a\">\r\n            <span class=\"navbar-toggler-icon\"><\/span>\r\n        <\/button>\r\n        <div class=\"collapse navbar-collapse\" id=\"navbarNav\">\r\n            <ul class=\"navbar-nav\">\r\n            <li class=\"nav-item active\">\r\n                <a class=\"nav-link\" href=\"#\">\u5173\u4e8e<\/a>\r\n            <\/li>\r\n            <\/ul>\r\n        <\/div>\r\n    <\/nav>\r\n    <div class=\"container\">\r\n        <mark>{% block content %} {% endblock %}<\/mark>\r\n    <\/div>\r\n\r\n    <!-- \u53ef\u9009\u7684JavaScript -->\r\n    <!-- \u9996\u5148\u662fjQuery\uff0c\u7136\u540e\u662fPopper.js\uff0c\u6700\u540e\u662fBootstrap JS -->\r\n    <script src=\"https:\/\/code.jquery.com\/jquery-3.3.1.slim.min.js\" integrity=\"sha384-q8i\/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo\" crossorigin=\"anonymous\"><\/script>\r\n    <script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/popper.js\/1.14.7\/umd\/popper.min.js\" integrity=\"sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1\" crossorigin=\"anonymous\"><\/script>\r\n    <script src=\"https:\/\/stackpath.bootstrapcdn.com\/bootstrap\/4.3.1\/js\/bootstrap.min.js\" integrity=\"sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf\/nJGzIxFDsf4x0xIM+B07jRM\" crossorigin=\"anonymous\"><\/script>\r\n  <\/body>\r\n<\/html><\/code><\/pre>\n<p>\u5b8c\u6210\u7f16\u8f91\u540e\uff0c\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u524d\u9762\u4ee3\u7801\u5757\u4e2d\u7684\u5927\u90e8\u5206\u4ee3\u7801\u662f\u6807\u51c6HTML\u548cBootstrap\u6240\u9700\u7684\u4ee3\u7801\u3002 <meta>\u6807\u7b7e\u4e3aWeb\u6d4f\u89c8\u5668\u63d0\u4f9b\u4fe1\u606f\uff0c<link>\u6807\u7b7e\u94fe\u63a5Bootstrap CSS\u6587\u4ef6\uff0c<script>\u6807\u7b7e\u94fe\u63a5JavaScript\u4ee3\u7801\uff0c\u5141\u8bb8\u4e00\u4e9b\u9644\u52a0\u7684Bootstrap\u529f\u80fd\u3002\u67e5\u770bBootstrap\u6587\u6863\u4ee5\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n<p>\u7136\u800c\uff0c\u4ee5\u4e0b\u7a81\u51fa\u90e8\u5206\u662f\u7279\u5b9a\u4e8eJinja\u6a21\u677f\u5f15\u64ce\u7684\u3002<\/p>\n<ul class=\"post-ul\">\n<li>{% block title %} {% endblock %}: A block that serves as a placeholder for a title, you\u2019ll later use it in other templates to give a custom title for each page in your application without rewriting the entire <head> section each time.<\/li>\n<li>{{ url_for('index')}}: A function call that will return the URL for the index() view function. This is different from the past url_for() call you used to link a static CSS file, because it only takes one argument, which is the view function\u2019s name, and links to the route associated with the function instead of a static file.<\/li>\n<li>{% block content %} {% endblock %}: Another block that will be replaced by content depending on the child template (templates that inherit from base.html) that will override it.<\/li>\n<\/ul>\n<p>\u73b0\u5728\u4f60\u5df2\u7ecf\u6709\u4e86\u4e00\u4e2a\u57fa\u672c\u6a21\u677f\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u7ee7\u627f\u6765\u5229\u7528\u5b83\u3002\u6253\u5f00index.html\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> templates\/index.html\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u7136\u540e\u7528\u4ee5\u4e0b\u5185\u5bb9\u66ff\u6362\u5b83\u7684\u5185\u5bb9\uff1a<\/p>\n<div>\u8bf7\u5c06\u4ee5\u4e0b\u5185\u5bb9\u7528\u4e2d\u6587\u8fdb\u884c\u91ca\u4e49\uff0c\u53ea\u9700\u8981\u4e00\u79cd\u9009\u9879\uff1a<br \/>\nflask_blog\/templates\/index.html<\/p>\n<p>\u7ffb\u8bd1\u7ed3\u679c\uff1a<br \/>\nflask_blog\/templates\/index.html \u7f51\u9875\u6a21\u677f\u8def\u5f84\u4e3aflask_blog\u4e2d\u7684index.html\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n\r\n{% block content %}\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{% block title %} Welcome to FlaskBlog {% endblock %}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n{% endblock %}\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u65b0\u7248\u672c\u7684index.html\u6a21\u677f\u4e2d\uff0c\u4f60\u4f7f\u7528{% extends %}\u6807\u7b7e\u4ecebase.html\u6a21\u677f\u4e2d\u7ee7\u627f\u3002\u7136\u540e\uff0c\u901a\u8fc7\u7528\u524d\u9762\u4ee3\u7801\u5757\u4e2d\u5185\u5bb9\u5757\u5185\u7684\u5185\u5bb9\u66ff\u6362\u57fa\u7840\u6a21\u677f\u4e2d\u7684\u5185\u5bb9\u5757\u6765\u6269\u5c55\u5b83\u3002<\/p>\n<p>\u8fd9\u4e2a\u5185\u5bb9\u5757\u5305\u542b\u4e00\u4e2a\u5e26\u6709\u6587\u672c\u201c\u6b22\u8fce\u6765\u5230FlaskBlog\u201d\u7684<\/p>\n<h1>\u6807\u7b7e\uff0c\u653e\u7f6e\u5728\u4e00\u4e2a\u6807\u9898\u5757\u5185\u3002\u8fd9\u4e2a\u6807\u9898\u5757\u53c8\u66ff\u4ee3\u4e86base.html\u6a21\u677f\u4e2d\u7684\u539f\u59cb\u6807\u9898\u5757\uff0c\u663e\u793a\u7684\u6587\u672c\u4e3a\u201c\u6b22\u8fce\u6765\u5230FlaskBlog\u201d\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u4f60\u5c31\u53ef\u4ee5\u907f\u514d\u91cd\u590d\u8f93\u5165\u76f8\u540c\u7684\u6587\u672c\uff0c\u56e0\u4e3a\u5b83\u65e2\u4f5c\u4e3a\u9875\u9762\u7684\u6807\u9898\uff0c\u4e5f\u4f5c\u4e3a\u4ece\u57fa\u7840\u6a21\u677f\u7ee7\u627f\u7684\u5bfc\u822a\u680f\u4e0b\u65b9\u7684\u6807\u9898\u3002<\/p>\n<p>\u6a21\u677f\u7ee7\u627f\u8fd8\u53ef\u4ee5\u8ba9\u4f60\u5728\u5176\u4ed6\u6a21\u677f\u4e2d\u91cd\u590d\u4f7f\u7528\u4f60\u5df2\u6709\u7684HTML\u4ee3\u7801\uff08\u5728\u6b64\u4f8b\u4e2d\u662fbase.html\uff09\uff0c\u800c\u4e0d\u9700\u8981\u6bcf\u6b21\u90fd\u91cd\u590d\u5b83\u3002<\/p>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\uff0c\u5e76\u5728\u6d4f\u89c8\u5668\u4e2d\u5237\u65b0\u7d22\u5f15\u9875\u9762\u3002\u60a8\u5c06\u770b\u5230\u5e26\u6709\u5bfc\u822a\u680f\u548c\u6837\u5f0f\u6807\u9898\u7684\u9875\u9762\u3002<\/p>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65645093a4b2f92e6c72003f\/116-0.png\" class='post-images' alt=\"Index Page with Bootstrap\" title=\"\"><\/p>\n<p>\u4f60\u5728Flask\u4e2d\u4f7f\u7528\u4e86HTML\u6a21\u677f\u548c\u9759\u6001\u6587\u4ef6\u3002\u4f60\u8fd8\u4f7f\u7528\u4e86Bootstrap\u6765\u5f00\u59cb\u4f18\u5316\u9875\u9762\u7684\u5916\u89c2\uff0c\u5e76\u4f7f\u7528\u57fa\u7840\u6a21\u677f\u6765\u907f\u514d\u91cd\u590d\u4ee3\u7801\u3002\u5728\u4e0b\u4e00\u6b65\u4e2d\uff0c\u4f60\u5c06\u8bbe\u7f6e\u4e00\u4e2a\u6570\u636e\u5e93\u6765\u5b58\u50a8\u4f60\u7684\u5e94\u7528\u6570\u636e\u3002<\/p>\n<h2>\u6b65\u9aa4\u56db\u2014\u5efa\u7acb\u6570\u636e\u5e93<\/p>\n<p>\u5728\u8fd9\u4e00\u6b65\u4e2d\uff0c\u60a8\u5c06\u8bbe\u7f6e\u4e00\u4e2a\u6570\u636e\u5e93\u6765\u5b58\u50a8\u6570\u636e\uff0c\u4e5f\u5c31\u662f\u60a8\u5e94\u7528\u7a0b\u5e8f\u7684\u535a\u5ba2\u5e16\u5b50\u3002\u60a8\u8fd8\u5c06\u586b\u5145\u6570\u636e\u5e93\u4e2d\u7684\u51e0\u4e2a\u793a\u4f8b\u6761\u76ee\u3002<\/p>\n<p>\u4f60\u5c06\u4f7f\u7528SQLite\u6570\u636e\u5e93\u6587\u4ef6\u6765\u5b58\u50a8\u4f60\u7684\u6570\u636e\uff0c\u56e0\u4e3asqlite3\u6a21\u5757\u5df2\u7ecf\u5728\u6807\u51c6\u7684Python\u5e93\u4e2d\u51c6\u5907\u597d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u5b83\u6765\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002\u5982\u679c\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8eSQLite\u7684\u4fe1\u606f\uff0c\u8bf7\u67e5\u770b\u672c\u6559\u7a0b\u3002<\/p>\n<p>\u9996\u5148\uff0c\u7531\u4e8eSQLite\u4e2d\u7684\u6570\u636e\u5b58\u50a8\u5728\u8868\u548c\u5217\u4e2d\uff0c\u800c\u4e14\u60a8\u7684\u6570\u636e\u4e3b\u8981\u662f\u535a\u5ba2\u6587\u7ae0\uff0c\u6240\u4ee5\u60a8\u9996\u5148\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u201cposts\u201d\u7684\u8868\uff0c\u5176\u4e2d\u5305\u542b\u5fc5\u8981\u7684\u5217\u3002\u60a8\u5c06\u521b\u5efa\u4e00\u4e2a\u5305\u542bSQL\u547d\u4ee4\u4ee5\u521b\u5efaposts\u8868\u548c\u51e0\u4e2a\u5217\u7684.sql\u6587\u4ef6\u3002\u7136\u540e\uff0c\u60a8\u5c06\u4f7f\u7528\u6b64\u6587\u4ef6\u6765\u521b\u5efa\u6570\u636e\u5e93\u3002<\/p>\n<p>\u5728\u4f60\u7684flask_blog\u76ee\u5f55\u4e2d\u6253\u5f00\u4e00\u4e2a\u540d\u4e3aschema.sql\u7684\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> schema.sql\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u8bf7\u5c06\u4ee5\u4e0bSQL\u547d\u4ee4\u8f93\u5165\u5230\u8fd9\u4e2a\u6587\u4ef6\u4e2d\uff1a<\/p>\n<div>\u8bf7\u4ee5\u4e2d\u6587\u672c\u5730\u5316\u5730\u6539\u5199\u4ee5\u4e0b\u5185\u5bb9\uff0c\u53ea\u9700\u8981\u4e00\u79cd\u9009\u9879\uff1a<br \/>\nflask_blog\/schema.sql<\/p>\n<p>\u7ffb\u8bd1\uff1a<\/p>\n<pre class=\"post-pre\"><code>DROP TABLE IF EXISTS posts;\r\n\r\nCREATE TABLE posts (\r\n    id INTEGER PRIMARY KEY AUTOINCREMENT,\r\n    created TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,\r\n    title TEXT NOT NULL,\r\n    content TEXT NOT NULL\r\n);\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u7b2c\u4e00\u4e2aSQL\u547d\u4ee4\u662fDROP TABLE IF EXISTS posts;\uff0c\u5b83\u4f1a\u5220\u9664\u4efb\u4f55\u540d\u4e3aposts\u7684\u5df2\u5b58\u5728\u7684\u8868\uff0c\u4ee5\u907f\u514d\u4ea7\u751f\u6df7\u6dc6\u884c\u4e3a\u3002\u8bf7\u6ce8\u610f\uff0c\u6bcf\u5f53\u4f7f\u7528\u8fd9\u4e9bSQL\u547d\u4ee4\u65f6\uff0c\u5b83\u5c06\u5220\u9664\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u5185\u5bb9\uff0c\u6240\u4ee5\u786e\u4fdd\u5728\u5b8c\u6210\u672c\u6559\u7a0b\u5e76\u5c1d\u8bd5\u6700\u7ec8\u7ed3\u679c\u4e4b\u524d\uff0c\u4e0d\u8981\u5728Web\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7f16\u5199\u4efb\u4f55\u91cd\u8981\u5185\u5bb9\u3002\u63a5\u4e0b\u6765\uff0c\u4f7f\u7528CREATE TABLE posts\u547d\u4ee4\u521b\u5efaposts\u8868\uff0c\u5176\u4e2d\u5305\u542b\u4ee5\u4e0b\u5217\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>id: An integer that represents a primary key, this will get assigned a unique value by the database for each entry (that is a blog post).<\/li>\n<li>created: The time the blog post was created at. NOT NULL signifies that this column should not be empty and the DEFAULT value is the CURRENT_TIMESTAMP value, which is the time at which the post was added to the database. Just like id, you don\u2019t need to specify a value for this column, as it will be automatically filled in.<\/li>\n<li>title: The post title.<\/li>\n<li>content: The post content.<\/li>\n<\/ul>\n<p>\u73b0\u5728\u60a8\u5df2\u7ecf\u5728schema.sql\u6587\u4ef6\u4e2d\u6709\u4e00\u4e2aSQL\u6a21\u5f0f\uff0c\u60a8\u5c06\u4f7f\u7528\u4e00\u4e2aPython\u6587\u4ef6\u6765\u521b\u5efa\u6570\u636e\u5e93\uff0c\u8be5\u6587\u4ef6\u5c06\u751f\u6210\u4e00\u4e2aSQLite .db\u6570\u636e\u5e93\u6587\u4ef6\u3002\u4f7f\u7528\u60a8\u559c\u6b22\u7684\u7f16\u8f91\u5668\u6253\u5f00flask_blog\u76ee\u5f55\u4e2d\u7684\u4e00\u4e2a\u540d\u4e3ainit_db.py\u7684\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> init_db.py\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u7136\u540e\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\u3002<\/p>\n<div>\u7528\u4e2d\u6587\u5c06\"flask_blog\/init_db.py\"\u6539\u5199\u4e00\u4e0b\uff0c\u53ea\u9700\u4e00\u4e2a\u9009\u9879: \"flask_blog\/init_db.py\"<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">import<\/span> sqlite3\r\n\r\nconnection <span class=\"token operator\">=<\/span> sqlite3<span class=\"token punctuation\">.<\/span>connect<span class=\"token punctuation\">(<\/span><span class=\"token string\">'database.db'<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n\r\n<span class=\"token keyword\">with<\/span> <span class=\"token builtin\">open<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'schema.sql'<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">as<\/span> f<span class=\"token punctuation\">:<\/span>\r\n    connection<span class=\"token punctuation\">.<\/span>executescript<span class=\"token punctuation\">(<\/span>f<span class=\"token punctuation\">.<\/span>read<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\ncur <span class=\"token operator\">=<\/span> connection<span class=\"token punctuation\">.<\/span>cursor<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\ncur<span class=\"token punctuation\">.<\/span>execute<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"INSERT INTO posts (title, content) VALUES (?, ?)\"<\/span><span class=\"token punctuation\">,<\/span>\r\n            <span class=\"token punctuation\">(<\/span><span class=\"token string\">'\u7b2c\u4e00\u7bc7\u6587\u7ae0'<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">'\u7b2c\u4e00\u7bc7\u6587\u7ae0\u7684\u5185\u5bb9'<\/span><span class=\"token punctuation\">)<\/span>\r\n            <span class=\"token punctuation\">)<\/span>\r\n\r\ncur<span class=\"token punctuation\">.<\/span>execute<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"INSERT INTO posts (title, content) VALUES (?, ?)\"<\/span><span class=\"token punctuation\">,<\/span>\r\n            <span class=\"token punctuation\">(<\/span><span class=\"token string\">'\u7b2c\u4e8c\u7bc7\u6587\u7ae0'<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">'\u7b2c\u4e8c\u7bc7\u6587\u7ae0\u7684\u5185\u5bb9'<\/span><span class=\"token punctuation\">)<\/span>\r\n            <span class=\"token punctuation\">)<\/span>\r\n\r\nconnection<span class=\"token punctuation\">.<\/span>commit<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\nconnection<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u9996\u5148\u5bfc\u5165sqlite3\u6a21\u5757\uff0c\u7136\u540e\u6253\u5f00\u4e00\u4e2a\u540d\u4e3adatabase.db\u7684\u6570\u636e\u5e93\u6587\u4ef6\u7684\u8fde\u63a5\uff0c\u5f53\u4f60\u8fd0\u884cPython\u6587\u4ef6\u65f6\uff0c\u8be5\u6587\u4ef6\u5c06\u88ab\u521b\u5efa\u3002\u63a5\u7740\u4f7f\u7528open()\u51fd\u6570\u6253\u5f00schema.sql\u6587\u4ef6\u3002\u7136\u540e\uff0c\u4f7f\u7528executescript()\u65b9\u6cd5\u6267\u884c\u5176\u5185\u5bb9\uff0c\u8be5\u65b9\u6cd5\u53ef\u4ee5\u540c\u65f6\u6267\u884c\u591a\u4e2aSQL\u8bed\u53e5\uff0c\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aposts\u7684\u8868\u3002\u521b\u5efa\u4e00\u4e2aCursor\u5bf9\u8c61\uff0c\u8be5\u5bf9\u8c61\u5141\u8bb8\u4f60\u4f7f\u7528\u5176execute()\u65b9\u6cd5\u6765\u6267\u884c\u4e24\u4e2aINSERT SQL\u8bed\u53e5\uff0c\u4ee5\u6dfb\u52a0\u4e24\u7bc7\u535a\u5ba2\u6587\u7ae0\u5230posts\u8868\u4e2d\u3002\u6700\u540e\uff0c\u63d0\u4ea4\u66f4\u6539\u5e76\u5173\u95ed\u8fde\u63a5\u3002<\/p>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\uff0c\u7136\u540e\u5728\u7ec8\u7aef\u4f7f\u7528Python\u547d\u4ee4\u8fd0\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\">python init_db.py<\/li><\/ol><\/code><\/pre>\n<p>\u4e00\u65e6\u6587\u4ef6\u6267\u884c\u5b8c\u6210\uff0c\u4f60\u7684flask_blog\u76ee\u5f55\u4e2d\u5c06\u4f1a\u51fa\u73b0\u4e00\u4e2a\u540d\u4e3adatabase.db\u7684\u65b0\u6587\u4ef6\u3002\u8fd9\u610f\u5473\u7740\u4f60\u5df2\u6210\u529f\u5730\u8bbe\u7f6e\u4e86\u4f60\u7684\u6570\u636e\u5e93\u3002<\/p>\n<p>\u5728\u63a5\u4e0b\u6765\u7684\u6b65\u9aa4\u4e2d\uff0c\u60a8\u5c06\u68c0\u7d22\u60a8\u5728\u6570\u636e\u5e93\u4e2d\u63d2\u5165\u7684\u5e16\u5b50\uff0c\u5e76\u5728\u60a8\u7684\u5e94\u7528\u4e3b\u9875\u4e2d\u663e\u793a\u5b83\u4eec\u3002<\/p>\n<h2>\u6b65\u9aa45 \u2014 \u663e\u793a\u6240\u6709\u5e16\u5b50<\/h2>\n<p>\u65e2\u7136\u4f60\u5df2\u7ecf\u8bbe\u7f6e\u597d\u4e86\u4f60\u7684\u6570\u636e\u5e93\uff0c\u73b0\u5728\u4f60\u53ef\u4ee5\u4fee\u6539index()\u89c6\u56fe\u51fd\u6570\uff0c\u4ee5\u663e\u793a\u4f60\u5728\u6570\u636e\u5e93\u4e2d\u62e5\u6709\u7684\u6240\u6709\u5e16\u5b50\u3002<\/p>\n<p>\u6253\u5f00app.py\u6587\u4ef6\u8fdb\u884c\u4ee5\u4e0b\u4fee\u6539\uff1a<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> app.py<\/li><\/ol><\/code><\/pre>\n<p>\u5728\u4f60\u7684\u7b2c\u4e00\u4e2a\u4fee\u6539\u4e2d\uff0c\u4f60\u4f1a\u5728\u6587\u4ef6\u7684\u9876\u90e8\u5bfc\u5165sqlite3\u6a21\u5757\u3002<\/p>\n<div>flask_blog\/app.py<\/div>\n<pre class=\"post-pre\"><code><mark><span class=\"token keyword\">import<\/span> sqlite3<\/mark>\r\n<span class=\"token keyword\">from<\/span> flask <span class=\"token keyword\">import<\/span> Flask<span class=\"token punctuation\">,<\/span> render_template\r\n\r\n<span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u60a8\u5c06\u521b\u5efa\u4e00\u4e2a\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u5c06\u521b\u5efa\u4e00\u4e2a\u6570\u636e\u5e93\u8fde\u63a5\u5e76\u8fd4\u56de\u5b83\u3002\u5c06\u5176\u76f4\u63a5\u6dfb\u52a0\u5728\u5bfc\u5165\u90e8\u5206\u4e4b\u540e\u3002<\/p>\n<div>flask_blog\/app.py<\/div>\n<pre class=\"post-pre\"><code><span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n<span class=\"token keyword\">from<\/span> flask <span class=\"token keyword\">import<\/span> Flask<span class=\"token punctuation\">,<\/span> render_template\r\n\r\n<mark><span class=\"token keyword\">def<\/span> <span class=\"token function\">get_db_connection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><\/mark>\r\n<mark>    conn <span class=\"token operator\">=<\/span> sqlite3<span class=\"token punctuation\">.<\/span>connect<span class=\"token punctuation\">(<\/span><span class=\"token string\">'database.db'<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n<mark>    conn<span class=\"token punctuation\">.<\/span>row_factory <span class=\"token operator\">=<\/span> sqlite3<span class=\"token punctuation\">.<\/span>Row<\/mark>\r\n<mark>    <span class=\"token keyword\">return<\/span> conn<\/mark>\r\n\r\n<span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a get_db_connection() \u51fd\u6570\u6253\u5f00\u4e00\u4e2a\u8fde\u63a5\u5230 database.db \u6570\u636e\u5e93\u6587\u4ef6\uff0c\u7136\u540e\u8bbe\u7f6e row_factory \u5c5e\u6027\u4e3a sqlite3.Row\uff0c\u4ee5\u4fbf\u60a8\u53ef\u4ee5\u901a\u8fc7\u5217\u540d\u8bbf\u95ee\u3002\u8fd9\u610f\u5473\u7740\u6570\u636e\u5e93\u8fde\u63a5\u5c06\u8fd4\u56de\u884c\uff0c\u884c\u7684\u884c\u4e3a\u7c7b\u4f3c\u4e8e\u5e38\u89c4\u7684 Python \u5b57\u5178\u3002\u6700\u540e\uff0c\u8be5\u51fd\u6570\u8fd4\u56de conn \u8fde\u63a5\u5bf9\u8c61\uff0c\u60a8\u5c06\u4f7f\u7528\u5b83\u6765\u8bbf\u95ee\u6570\u636e\u5e93\u3002<\/p>\n<p>\u5728\u5b9a\u4e49get_db_connection()\u51fd\u6570\u4e4b\u540e\uff0c\u4fee\u6539index()\u51fd\u6570\u5982\u4e0b\uff1a<\/p>\n<div>flask_blog\/app.py<\/div>\n<pre class=\"post-pre\"><code><span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n\r\n<span class=\"token decorator annotation punctuation\">@app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'\/'<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">index<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span>\r\n    <mark>conn <span class=\"token operator\">=<\/span> get_db_connection<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n    <mark>posts <span class=\"token operator\">=<\/span> conn<span class=\"token punctuation\">.<\/span>execute<span class=\"token punctuation\">(<\/span><span class=\"token string\">'SELECT * FROM posts'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>fetchall<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n    <mark>conn<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n    <span class=\"token keyword\">return<\/span> render_template<span class=\"token punctuation\">(<\/span><span class=\"token string\">'index.html'<\/span><mark><span class=\"token punctuation\">,<\/span> posts<span class=\"token operator\">=<\/span>posts<\/mark><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u65b0\u7248\u672c\u7684<code>index()<\/code>\u51fd\u6570\u4e2d\uff0c\u4f60\u9996\u5148\u4f7f\u7528\u4e4b\u524d\u5b9a\u4e49\u7684<code>get_db_connection()<\/code>\u51fd\u6570\u6253\u5f00\u4e00\u4e2a\u6570\u636e\u5e93\u8fde\u63a5\u3002\u7136\u540e\uff0c\u4f60\u6267\u884c\u4e00\u4e2aSQL\u67e5\u8be2\u6765\u9009\u62e9\u4eceposts\u8868\u4e2d\u7684\u6240\u6709\u6761\u76ee\u3002\u4f60\u4f7f\u7528<code>fetchall()<\/code>\u65b9\u6cd5\u6765\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\u7684\u6240\u6709\u884c\uff0c\u8fd9\u4f1a\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u4e4b\u524d\u5728\u6570\u636e\u5e93\u4e2d\u63d2\u5165\u7684\u5e16\u5b50\u5217\u8868\u3002<\/p>\n<p>\u4f60\u4f7f\u7528<code>close()<\/code>\u65b9\u6cd5\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u5e76\u8fd4\u56de\u6e32\u67d3<code>index.html<\/code>\u6a21\u677f\u7684\u7ed3\u679c\u3002\u4f60\u8fd8\u5c06\u5305\u542b\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u7684\u7ed3\u679c\u7684posts\u5bf9\u8c61\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\uff0c\u8fd9\u5c06\u5141\u8bb8\u4f60\u5728<code>index.html<\/code>\u6a21\u677f\u4e2d\u8bbf\u95ee\u535a\u5ba2\u6587\u7ae0\u3002<\/p>\n<p>\u5b8c\u6210\u8fd9\u4e9b\u4fee\u6539\u4e4b\u540e\uff0c\u4fdd\u5b58\u5e76\u5173\u95ed<code>app.py<\/code>\u6587\u4ef6\u3002<\/p>\n<p>\u73b0\u5728\uff0c\u4f60\u5df2\u7ecf\u5c06\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u7684\u5e16\u5b50\u4f20\u9012\u7ed9\u4e86<code>index.html<\/code>\u6a21\u677f\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528for\u5faa\u73af\u5728\u9996\u9875\u4e0a\u663e\u793a\u6bcf\u4e2a\u5e16\u5b50\u3002<\/p>\n<p>\u6253\u5f00<code>index.html<\/code>\u6587\u4ef6:<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> templates\/index.html\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5c06\u5176\u4fee\u6539\u4e3a\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<div>\u8bf7\u539f\u6587\u4e2d\u7684 \"flask_blog\/templates\/index.html\" \u6587\u4ef6\u7684\u4e2d\u6587\u672c\u5730\u5316\u8868\u793a\u4e00\u6b21\u3002<\/p>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n\r\n{% block content %}\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{% block title %} \u6b22\u8fce\u6765\u5230Flask\u535a\u5ba2 {% endblock %}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>    {% for post in posts %}<\/mark>\r\n<mark>        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>a<\/span> <span class=\"token attr-name\">href<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>#<span class=\"token punctuation\">\"<\/span><\/span><\/span><\/mark><span class=\"token tag\"><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>h2<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{{ post['title'] }}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h2<\/span><\/span><\/mark><span class=\"token tag\"><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>a<\/span><\/span><\/mark><span class=\"token tag\"><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>span<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>badge badge-primary<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{{ post['created'] }}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>span<\/span><\/span><\/mark><span class=\"token tag\"><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>hr<\/span><\/span><\/mark><span class=\"token tag\"><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>    {% endfor %}<\/mark>\r\n{% endblock %}\r\n<\/code><\/pre>\n<p>\u8fd9\u91cc\uff0c\u8bed\u6cd5 <code>{% for post in posts %}<\/code> \u662f\u4e00\u4e2aJinja\u7684for\u5faa\u73af\uff0c\u7c7b\u4f3c\u4e8ePython\u7684for\u5faa\u73af\uff0c\u53ea\u662f\u9700\u8981\u4f7f\u7528 <code>{% endfor %}<\/code> \u4f5c\u4e3a\u7ed3\u675f\u8bed\u53e5\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u8bed\u6cd5\u6765\u904d\u5386\u901a\u8fc7 <code>index()<\/code> \u51fd\u6570\u4f20\u9012\u7684posts\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u9879\u76ee\u3002\u5728\u8fd9\u4e2a\u5faa\u73af\u4e2d\uff0c\u4f60\u5c06\u5728 <code>&lt;h2&gt;<\/code> \u6807\u9898\u5185\u7684 <code>&lt;a&gt;<\/code> \u6807\u7b7e\u4e2d\u663e\u793a\u5e16\u5b50\u7684\u6807\u9898\uff08\u7a0d\u540e\u4f60\u5c06\u4f7f\u7528\u8fd9\u4e2a\u6807\u7b7e\u6765\u94fe\u63a5\u6bcf\u4e2a\u5e16\u5b50\uff09\u3002<\/p>\n<p>\u4f60\u4f7f\u7528\u4e00\u4e2a\u6587\u5b57\u53d8\u91cf\u5206\u9694\u7b26\uff08<code>{{ ... }}<\/code>\uff09\u6765\u663e\u793a\u6807\u9898\u3002\u8bb0\u4f4f\uff0c\u5e16\u5b50\u5c06\u662f\u4e00\u4e2a\u7c7b\u4f3c\u5b57\u5178\u7684\u5bf9\u8c61\uff0c\u56e0\u6b64\u4f60\u53ef\u4ee5\u901a\u8fc7<code>post['title']<\/code>\u8bbf\u95ee\u5e16\u5b50\u6807\u9898\u3002\u4f60\u8fd8\u53ef\u4ee5\u4f7f\u7528\u76f8\u540c\u7684\u65b9\u6cd5\u6765\u663e\u793a\u5e16\u5b50\u521b\u5efa\u65e5\u671f\u3002<\/p>\n<p>\u7f16\u8f91\u5b8c\u6587\u4ef6\u540e\uff0c\u4fdd\u5b58\u5e76\u5173\u95ed\u3002\u7136\u540e\u5728\u6d4f\u89c8\u5668\u4e2d\u5bfc\u822a\u5230\u7d22\u5f15\u9875\u9762\uff0c\u4f60\u4f1a\u5728\u9875\u9762\u4e0a\u770b\u5230\u4f60\u6dfb\u52a0\u5230\u6570\u636e\u5e93\u7684\u4e24\u7bc7\u6587\u7ae0\u3002<\/p>\n<div>\n    <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65645093a4b2f92e6c72003f\/166-0.png\" class='post-images' alt=\"\u663e\u793a\u6587\u7ae0\u7684\u7d22\u5f15\u9875\u9762\" title=\"\"><\/p>\n<p>\u73b0\u5728\uff0c\u60a8\u5df2\u7ecf\u4fee\u6539\u4e86index()\u89c6\u56fe\u51fd\u6570\uff0c\u5c06\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u5e16\u5b50\u663e\u793a\u5728\u5e94\u7528\u7684\u4e3b\u9875\u4e0a\uff0c\u63a5\u4e0b\u6765\u60a8\u5c06\u5728\u5355\u72ec\u7684\u9875\u9762\u4e2d\u663e\u793a\u6bcf\u4e2a\u5e16\u5b50\uff0c\u5e76\u5141\u8bb8\u7528\u6237\u94fe\u63a5\u5230\u6bcf\u4e2a\u4e2a\u522b\u7684\u5e16\u5b50\u3002<\/p>\n<h2>\u6b65\u9aa4\u516d-\u663e\u793a\u5355\u7bc7\u6587\u7ae0<\/h2>\n<p>\u5728\u8fd9\u4e00\u6b65\u4e2d\uff0c\u60a8\u5c06\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Flask\u8def\u7531\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u89c6\u56fe\u51fd\u6570\u548c\u4e00\u4e2a\u65b0\u7684HTML\u6a21\u677f\uff0c\u7528\u4e8e\u6839\u636eID\u663e\u793a\u4e00\u4e2a\u5355\u72ec\u7684\u535a\u5ba2\u6587\u7ae0\u3002<\/p>\n<p>\u5230\u6b64\u6b65\u9aa4\u7ed3\u675f\u65f6\uff0cURL http:\/\/127.0.0.1:5000\/1 \u5c06\u662f\u4e00\u4e2a\u663e\u793a\u7b2c\u4e00\u7bc7\u5e16\u5b50\u7684\u9875\u9762\uff08\u56e0\u4e3a\u5176ID\u4e3a1\uff09\u3002\u5982\u679c\u5b58\u5728\u76f8\u5173\u7684ID\u6570\u5b57\uff0cURL http:\/\/127.0.0.1:5000\/ID \u5c06\u663e\u793a\u76f8\u5e94ID\u7684\u5e16\u5b50\u3002<\/p>\n<p>\u6253\u5f00 app.py \u8fdb\u884c\u7f16\u8f91\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> app.py\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u7531\u4e8e\u5728\u9879\u76ee\u7684\u591a\u4e2a\u5730\u65b9\u9700\u8981\u6839\u636e\u5176ID\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u535a\u5ba2\u6587\u7ae0\uff0c\u56e0\u6b64\u60a8\u5c06\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aget_post()\u7684\u72ec\u7acb\u51fd\u6570\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u4f20\u9012ID\u6765\u8c03\u7528\u5b83\uff0c\u5e76\u8fd4\u56de\u4e0e\u6240\u63d0\u4f9b\u7684ID\u76f8\u5173\u8054\u7684\u535a\u5ba2\u6587\u7ae0\uff0c\u6216\u8005\u5982\u679c\u535a\u5ba2\u6587\u7ae0\u4e0d\u5b58\u5728\uff0c\u5219\u8ba9Flask\u54cd\u5e94404 Not Found\u7684\u6d88\u606f\u3002<\/p>\n<p>\u8981\u4f7f\u7528404\u9875\u9762\u8fdb\u884c\u54cd\u5e94\uff0c\u4f60\u9700\u8981\u5728\u6587\u4ef6\u9876\u90e8\u4eceWerkzeug\u5e93\u4e2d\u5bfc\u5165abort()\u51fd\u6570\uff0c\u8fd9\u4e2a\u5e93\u662f\u968f\u7740Flask\u4e00\u8d77\u5b89\u88c5\u7684\u3002<\/p>\n<div>\u4ee5\u4e0b\u662f\u5bf9Flask\u535a\u5ba2\u7684app.py\u6587\u4ef6\u7684\u7b80\u6d01\u6982\u62ec\uff1a<\/div>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">import<\/span> sqlite3\r\n<span class=\"token keyword\">from<\/span> flask <span class=\"token keyword\">import<\/span> Flask<span class=\"token punctuation\">,<\/span> render_template\r\n<mark><span class=\"token keyword\">from<\/span> werkzeug<span class=\"token punctuation\">.<\/span>exceptions <span class=\"token keyword\">import<\/span> abort<\/mark>\r\n\r\n<span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5728\u4f60\u4e4b\u524d\u521b\u5efa\u7684get_db_connection()\u51fd\u6570\u4e4b\u540e\u6dfb\u52a0get_post()\u51fd\u6570\u3002<\/p>\n<div>Flask\u535a\u5ba2\/app.py<\/div>\n<pre class=\"post-pre\"><code><span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n\r\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">get_db_connection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span>\r\n    conn <span class=\"token operator\">=<\/span> sqlite3<span class=\"token punctuation\">.<\/span>connect<span class=\"token punctuation\">(<\/span><span class=\"token string\">'database.db'<\/span><span class=\"token punctuation\">)<\/span>\r\n    conn<span class=\"token punctuation\">.<\/span>row_factory <span class=\"token operator\">=<\/span> sqlite3<span class=\"token punctuation\">.<\/span>Row\r\n    <span class=\"token keyword\">return<\/span> conn\r\n\r\n\r\n<mark><span class=\"token keyword\">def<\/span> <span class=\"token function\">get_post<\/span><span class=\"token punctuation\">(<\/span>post_id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><\/mark>\r\n<mark>    conn <span class=\"token operator\">=<\/span> get_db_connection<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n<mark>    post <span class=\"token operator\">=<\/span> conn<span class=\"token punctuation\">.<\/span>execute<span class=\"token punctuation\">(<\/span><span class=\"token string\">'SELECT * FROM posts WHERE id = ?'<\/span><span class=\"token punctuation\">,<\/span><\/mark>\r\n<mark>                        <span class=\"token punctuation\">(<\/span>post_id<span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>fetchone<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n<mark>    conn<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n<mark>    <span class=\"token keyword\">if<\/span> post <span class=\"token keyword\">is<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><\/mark>\r\n<mark>        abort<span class=\"token punctuation\">(<\/span><span class=\"token number\">404<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n<mark>    <span class=\"token keyword\">return<\/span> post<\/mark>\r\n\r\n<span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u65b0\u529f\u80fd\u6709\u4e00\u4e2apost_id\u53c2\u6570\uff0c\u7528\u4e8e\u786e\u5b9a\u8981\u8fd4\u56de\u54ea\u7bc7\u535a\u5ba2\u6587\u7ae0\u3002<\/p>\n<p>\u5728\u51fd\u6570\u5185\u90e8\uff0c\u60a8\u4f7f\u7528get_db_connection()\u51fd\u6570\u6253\u5f00\u6570\u636e\u5e93\u8fde\u63a5\u5e76\u6267\u884cSQL\u67e5\u8be2\uff0c\u4ee5\u83b7\u53d6\u4e0e\u7ed9\u5b9a\u7684post_id\u503c\u5173\u8054\u7684\u535a\u5ba2\u6587\u7ae0\u3002\u60a8\u6dfb\u52a0\u4e86fetchone()\u65b9\u6cd5\u6765\u83b7\u53d6\u7ed3\u679c\u5e76\u5c06\u5176\u5b58\u50a8\u5728post\u53d8\u91cf\u4e2d\uff0c\u7136\u540e\u5173\u95ed\u8fde\u63a5\u3002\u5982\u679cpost\u53d8\u91cf\u7684\u503c\u4e3aNone\uff0c\u8868\u793a\u5728\u6570\u636e\u5e93\u4e2d\u672a\u627e\u5230\u7ed3\u679c\uff0c\u60a8\u5c06\u4f7f\u7528\u4e4b\u524d\u5bfc\u5165\u7684abort()\u51fd\u6570\u4ee5404\u9519\u8bef\u4ee3\u7801\u54cd\u5e94\uff0c\u5e76\u4e14\u51fd\u6570\u5c06\u7ed3\u675f\u6267\u884c\u3002\u7136\u800c\uff0c\u5982\u679c\u627e\u5230\u4e86\u4e00\u7bc7\u6587\u7ae0\uff0c\u60a8\u5c06\u8fd4\u56depost\u53d8\u91cf\u7684\u503c\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u5728app.py\u6587\u4ef6\u7684\u672b\u5c3e\u6dfb\u52a0\u4ee5\u4e0b\u89c6\u56fe\u51fd\u6570\uff1a<\/p>\n<div>Flask\u535a\u5ba2\/app.py<\/div>\n<\/div>\n<p>\u8fd9\u662f\u6587\u7ae0\u300a\u5982\u4f55\u4f7f\u7528Python 3\u4e2d\u7684Flask\u6765\u5236\u4f5c\u4e00\u4e2aWeb\u5e94\u7528\u300b\u7684\u7b2c10\u90e8\u5206\uff08\u517120\u90e8\u5206\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n\r\n<mark><span class=\"token decorator annotation punctuation\">@app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'\/&lt;int:post_id&gt;'<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n<mark><span class=\"token keyword\">def<\/span> <span class=\"token function\">post<\/span><span class=\"token punctuation\">(<\/span>post_id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><\/mark>\r\n<mark>    post <span class=\"token operator\">=<\/span> get_post<span class=\"token punctuation\">(<\/span>post_id<span class=\"token punctuation\">)<\/span><\/mark>\r\n<mark>    <span class=\"token keyword\">return<\/span> render_template<span class=\"token punctuation\">(<\/span><span class=\"token string\">'post.html'<\/span><span class=\"token punctuation\">,<\/span> post<span class=\"token operator\">=<\/span>post<span class=\"token punctuation\">)<\/span><\/mark>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u65b0\u7684\u89c6\u56fe\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u6dfb\u52a0\u4e86\u4e00\u4e2a\u53d8\u91cf\u89c4\u5219<code>&lt;int:post_id&gt;<\/code>\uff0c\u7528\u6765\u6307\u5b9a\u659c\u6760(\/)\u540e\u9762\u7684\u90e8\u5206\u662f\u4e00\u4e2a\u6b63\u6574\u6570\uff08\u4f7f\u7528int\u8f6c\u6362\u5668\u6807\u8bb0\uff09\u3002Flask\u4f1a\u8bc6\u522b\u8fd9\u4e2a\u89c4\u5219\uff0c\u5e76\u5c06URL\u4e2d\u7684\u503c\u4f20\u9012\u7ed9<code>post()<\/code>\u89c6\u56fe\u51fd\u6570\u7684<code>post_id<\/code>\u53c2\u6570\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528<code>get_post()<\/code>\u51fd\u6570\u83b7\u53d6\u4e0e\u6307\u5b9aID\u76f8\u5173\u8054\u7684\u535a\u5ba2\u6587\u7ae0\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728<code>post<\/code>\u53d8\u91cf\u4e2d\uff0c\u6700\u540e\u5c06\u5176\u4f20\u9012\u7ed9\u5373\u5c06\u521b\u5efa\u7684<code>post.html<\/code>\u6a21\u677f\u3002<\/p>\n<p>\u4fdd\u5b58<code>app.py<\/code>\u6587\u4ef6\u540e\uff0c\u6253\u5f00\u4e00\u4e2a\u65b0\u7684<code>post.html<\/code>\u6a21\u677f\u6587\u4ef6\u8fdb\u884c\u7f16\u8f91\uff1a<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> templates\/post.html\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u65b0\u7684<code>post.html<\/code>\u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u8f93\u5165\u4ee5\u4e0b\u4ee3\u7801\u3002\u8fd9\u4e2a\u6a21\u677f\u4e0e<code>index.html<\/code>\u7c7b\u4f3c\uff0c\u4f46\u5b83\u53ea\u663e\u793a\u5355\u4e2a\u535a\u5ba2\u6587\u7ae0\u53ca\u5176\u5b8c\u6574\u5185\u5bb9\u3002<\/p>\n<h3>Flask\u535a\u5ba2\u6a21\u677f\uff1aflask_blog\/templates\/post.html<\/h3>\n<p>\u4ee5\u4e0b\u662f\u8be5\u7f51\u9875\u6a21\u677f\u7684\u8be6\u7ec6\u4e2d\u6587\u89e3\u91ca\uff1a<\/p>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n\r\n{% block content %}\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>h2<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{% block title %} {{ post['title'] }} {% endblock %}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h2<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>span<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>badge badge-primary<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{{ post['created'] }}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>span<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>p<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{{ post['content'] }}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>p<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n{% endblock %}\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u6a21\u677f\u4e2d\uff0c\u6211\u4eec\u7ee7\u627f\u4e86<code>base.html<\/code>\u7684\u57fa\u7840\u7ed3\u6784\uff0c\u5e76\u5728\u5185\u5bb9\u5757\u4e2d\u6dfb\u52a0\u4e86\u6587\u7ae0\u6807\u9898\u3001\u521b\u5efa\u65e5\u671f\u548c\u6b63\u6587\u5185\u5bb9\u3002\u6807\u9898\u5757\uff08title block\uff09\u7684\u8bbe\u7f6e\u786e\u4fdd\u4e86\u9875\u9762\u6807\u9898\u80fd\u591f\u4e0e\u6587\u7ae0\u6807\u9898\u4fdd\u6301\u4e00\u81f4\uff0c\u540c\u65f6\u4e5f\u5728<code>&lt;h2&gt;<\/code>\u6807\u7b7e\u4e2d\u663e\u793a\u6587\u7ae0\u6807\u9898\u3002<\/p>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u73b0\u5728\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee\u4ee5\u4e0bURL\u6765\u67e5\u770b\u6570\u636e\u5e93\u4e2d\u7684\u535a\u5ba2\u6587\u7ae0\u3002\u524d\u4e24\u4e2aURL\u4f1a\u663e\u793a\u5b58\u5728\u7684\u6587\u7ae0\uff0c\u800c\u7b2c\u4e09\u4e2aURL\u5219\u4f1a\u663e\u793a\u4e00\u4e2a\u63d0\u793a\u7528\u6237\u6240\u8bf7\u6c42\u535a\u5ba2\u6587\u7ae0\u672a\u627e\u5230\u7684\u9875\u9762\uff08\u56e0\u4e3a\u76ee\u524d\u6570\u636e\u5e93\u4e2d\u8fd8\u6ca1\u6709ID\u4e3a3\u7684\u6587\u7ae0\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code>http:\/\/127.0.0.1:5000\/1\r\nhttp:\/\/127.0.0.1:5000\/2\r\nhttp:\/\/127.0.0.1:5000\/3\r\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u56de\u5230\u7d22\u5f15\u9875\u9762\uff0c\u4f7f\u6bcf\u4e2a\u6587\u7ae0\u6807\u9898\u90fd\u80fd\u94fe\u63a5\u5230\u5176\u5bf9\u5e94\u7684\u8be6\u60c5\u9875\u9762\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528Flask\u7684<code>url_for()<\/code>\u51fd\u6570\u6765\u5b9e\u73b0\u3002\u9996\u5148\uff0c\u6253\u5f00<code>index.html<\/code>\u6a21\u677f\u8fdb\u884c\u7f16\u8f91\uff1a<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> templates\/index.html\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5c06\u6587\u7ae0\u6807\u9898\u94fe\u63a5\u7684<code>href<\/code>\u5c5e\u6027\u503c\u4ece<code>#<\/code>\u66f4\u6539\u4e3a<code>{{ url_for('post', post_id=post['id']) }}<\/code>\u3002\u8fd9\u6837\uff0cfor\u5faa\u73af\u4e2d\u7684\u6bcf\u4e2a\u6587\u7ae0\u6807\u9898\u90fd\u4f1a\u94fe\u63a5\u5230\u5bf9\u5e94\u7684\u6587\u7ae0\u8be6\u60c5\u9875\u9762\u3002<\/p>\n<h3>Flask\u535a\u5ba2\u6a21\u677f\uff1aflask_blog\/templates\/index.html<\/h3>\n<pre class=\"post-pre\"><code>{% for post in posts %}\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>a<\/span> <span class=\"token attr-name\">href<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span><mark>{{ url_for('post', post_id=post['id']) }}<\/mark><span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>h2<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{{ post['title'] }}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h2<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>a<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>span<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>badge badge-primary<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{{ post['created'] }}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>span<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>hr<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n{% endfor %}\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\uff0c\u4f60\u5c06'post'\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\u4f20\u9012\u7ed9url_for()\u51fd\u6570\u3002\u8fd9\u662fpost()\u89c6\u56fe\u51fd\u6570\u7684\u540d\u79f0\uff0c\u7531\u4e8e\u5b83\u63a5\u53d7\u4e00\u4e2apost_id\u53c2\u6570\uff0c\u6240\u4ee5\u4f60\u7ed9\u5b83\u4f20\u9012\u4e86post['id']\u7684\u503c\u3002url_for()\u51fd\u6570\u5c06\u6839\u636e\u6bcf\u4e2a\u5e16\u5b50\u7684ID\u8fd4\u56de\u76f8\u5e94\u7684URL\u3002<\/p>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u7d22\u5f15\u9875\u4e0a\u7684\u94fe\u63a5\u73b0\u5728\u5c06\u6309\u9884\u671f\u8fd0\u884c\u3002\u6709\u4e86\u8fd9\u4e2a\uff0c\u60a8\u73b0\u5728\u5df2\u7ecf\u5b8c\u6210\u4e86\u5e94\u7528\u7a0b\u5e8f\u8d1f\u8d23\u663e\u793a\u6570\u636e\u5e93\u4e2d\u535a\u5ba2\u6587\u7ae0\u7684\u90e8\u5206\u3002\u63a5\u4e0b\u6765\uff0c\u60a8\u5c06\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u6dfb\u52a0\u521b\u5efa\u3001\u7f16\u8f91\u548c\u5220\u9664\u535a\u5ba2\u6587\u7ae0\u7684\u529f\u80fd\u3002<\/p>\n<h2>\u7b2c\u4e03\u6b65 - \u4fee\u6539\u5e16\u5b50<\/h2>\n<p>\u73b0\u5728\uff0c\u60a8\u5df2\u7ecf\u5728\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5c55\u793a\u4e86\u6570\u636e\u5e93\u4e2d\u5b58\u5728\u7684\u535a\u5ba2\u6587\u7ae0\u4e4b\u540e\uff0c\u60a8\u9700\u8981\u5141\u8bb8\u5e94\u7528\u7a0b\u5e8f\u7684\u7528\u6237\u64b0\u5199\u65b0\u7684\u535a\u5ba2\u6587\u7ae0\u5e76\u6dfb\u52a0\u5230\u6570\u636e\u5e93\u4e2d\uff0c\u7f16\u8f91\u5df2\u6709\u7684\u6587\u7ae0\uff0c\u4ee5\u53ca\u5220\u9664\u4e0d\u5fc5\u8981\u7684\u535a\u5ba2\u6587\u7ae0\u3002<\/p>\n<h3>\u53d1\u5e03\u4e00\u7bc7\u65b0\u5e16<\/h3>\n<p>\u5230\u76ee\u524d\u4e3a\u6b62\uff0c\u60a8\u6709\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u663e\u793a\u60a8\u6570\u636e\u5e93\u4e2d\u7684\u5e16\u5b50\uff0c\u4f46\u9664\u975e\u60a8\u76f4\u63a5\u8fde\u63a5\u5230SQLite\u6570\u636e\u5e93\u5e76\u624b\u52a8\u6dfb\u52a0\u5e16\u5b50\uff0c\u5426\u5219\u65e0\u6cd5\u6dfb\u52a0\u65b0\u7684\u5e16\u5b50\u3002\u5728\u672c\u90e8\u5206\uff0c\u60a8\u5c06\u521b\u5efa\u4e00\u4e2a\u9875\u9762\uff0c\u901a\u8fc7\u63d0\u4f9b\u6807\u9898\u548c\u5185\u5bb9\uff0c\u53ef\u4ee5\u521b\u5efa\u5e16\u5b50\u3002<\/p>\n<p>\u6253\u5f00app.py\u6587\u4ef6\u8fdb\u884c\u7f16\u8f91\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> app.py\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u9996\u5148\uff0c\u60a8\u5c06\u4eceFlask\u6846\u67b6\u4e2d\u5bfc\u5165\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>\u5168\u5c40request\u5bf9\u8c61\uff0c\u7528\u4e8e\u8bbf\u95ee\u5c06\u901a\u8fc7HTML\u8868\u5355\u63d0\u4ea4\u7684\u4f20\u5165\u8bf7\u6c42\u6570\u636e\u3002<\/li>\n<li>url_for()\u51fd\u6570\uff0c\u7528\u4e8e\u751f\u6210URL\u3002<\/li>\n<li>flash()\u51fd\u6570\uff0c\u7528\u4e8e\u5728\u5904\u7406\u8bf7\u6c42\u65f6\u95ea\u73b0\u6d88\u606f\u3002<\/li>\n<li>redirect()\u51fd\u6570\uff0c\u7528\u4e8e\u5c06\u5ba2\u6237\u7aef\u91cd\u5b9a\u5411\u5230\u4e0d\u540c\u7684\u4f4d\u7f6e\u3002<\/li>\n<\/ul>\n<p>\u8bf7\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u60a8\u7684\u6587\u4ef6\u4e2d\uff1a<\/p>\n<div>flask_blog\/app.py<\/div>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">import<\/span> sqlite3\r\n<span class=\"token keyword\">from<\/span> flask <span class=\"token keyword\">import<\/span> Flask<span class=\"token punctuation\">,<\/span> render_template<mark><span class=\"token punctuation\">,<\/span> request<span class=\"token punctuation\">,<\/span> url_for<span class=\"token punctuation\">,<\/span> flash<span class=\"token punctuation\">,<\/span> redirect<\/mark>\r\n<span class=\"token keyword\">from<\/span> werkzeug<span class=\"token punctuation\">.<\/span>exceptions <span class=\"token keyword\">import<\/span> abort\r\n\r\n<span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n<\/code><\/pre>\n<p>flash()\u51fd\u6570\u5c06\u95ea\u73b0\u7684\u6d88\u606f\u5b58\u50a8\u5728\u5ba2\u6237\u7aef\u7684\u6d4f\u89c8\u5668\u4f1a\u8bdd\u4e2d\uff0c\u8fd9\u9700\u8981\u8bbe\u7f6e\u4e00\u4e2a\u79d8\u94a5\u3002\u8fd9\u4e2a\u79d8\u94a5\u7528\u4e8e\u4fdd\u62a4\u4f1a\u8bdd\uff0c\u5141\u8bb8Flask\u5728\u4e0d\u540c\u8bf7\u6c42\u4e4b\u95f4\u8bb0\u4f4f\u4fe1\u606f\uff0c\u6bd4\u5982\u4ece\u65b0\u5e16\u5b50\u9875\u9762\u8f6c\u5230\u7d22\u5f15\u9875\u9762\u3002\u7528\u6237\u53ef\u4ee5\u8bbf\u95ee\u4f1a\u8bdd\u4e2d\u5b58\u50a8\u7684\u4fe1\u606f\uff0c\u4f46\u662f\u9664\u975e\u62e5\u6709\u79d8\u94a5\uff0c\u5426\u5219\u4e0d\u80fd\u4fee\u6539\u5b83\uff0c\u56e0\u6b64\u7edd\u4e0d\u80fd\u8ba9\u4efb\u4f55\u4eba\u8bbf\u95ee\u4f60\u7684\u79d8\u94a5\u3002\u8bf7\u67e5\u9605Flask\u6587\u6863\u4ee5\u83b7\u53d6\u66f4\u591a\u5173\u4e8e\u4f1a\u8bdd\u7684\u4fe1\u606f\u3002<\/p>\n<p>\u4e3a\u4e86\u8bbe\u7f6e\u4e00\u4e2a\u79d8\u94a5\uff0c\u60a8\u9700\u8981\u901a\u8fc7 app.config \u5bf9\u8c61\u5411\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u6dfb\u52a0 SECRET_KEY \u914d\u7f6e\u3002\u5728\u5b9a\u4e49 index() \u89c6\u56fe\u51fd\u6570\u4e4b\u524d\uff0c\u76f4\u63a5\u5728 app \u7684\u5b9a\u4e49\u4e4b\u540e\u6dfb\u52a0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\napp <span class=\"token operator\">=<\/span> Flask<span class=\"token punctuation\">(<\/span>__name__<span class=\"token punctuation\">)<\/span>\r\n<mark>app<span class=\"token punctuation\">.<\/span>config<span class=\"token punctuation\">[<\/span><span class=\"token string\">'SECRET_KEY'<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> <span class=\"token string\">'your secret key'<\/span><\/mark>\r\n\r\n\r\n<span class=\"token decorator annotation punctuation\">@app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'\/'<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">index<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span>\r\n    conn <span class=\"token operator\">=<\/span> get_db_connection<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n    posts <span class=\"token operator\">=<\/span> conn<span class=\"token punctuation\">.<\/span>execute<span class=\"token punctuation\">(<\/span><span class=\"token string\">'SELECT * FROM posts'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>fetchall<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n    conn<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n    <span class=\"token keyword\">return<\/span> render_template<span class=\"token punctuation\">(<\/span><span class=\"token string\">'index.html'<\/span><span class=\"token punctuation\">,<\/span> posts<span class=\"token operator\">=<\/span>posts<span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n<\/code><\/pre>\n<p>\u8bf7\u8bb0\u4f4f\uff0c\u5bc6\u94a5\u5e94\u8be5\u662f\u4e00\u4e2a\u957f\u7684\u968f\u673a\u5b57\u7b26\u4e32\u3002<\/p>\n<p>\u5728\u8bbe\u7f6e\u4e86\u5bc6\u94a5\u540e\uff0c\u60a8\u5c06\u521b\u5efa\u4e00\u4e2a\u89c6\u56fe\u51fd\u6570\uff0c\u7528\u4e8e\u6e32\u67d3\u4e00\u4e2a\u6a21\u677f\uff0c\u663e\u793a\u4e00\u4e2a\u53ef\u4ee5\u586b\u5199\u7684\u8868\u5355\uff0c\u4ee5\u521b\u5efa\u65b0\u7684\u535a\u5ba2\u6587\u7ae0\u3002\u5c06\u8fd9\u4e2a\u65b0\u51fd\u6570\u6dfb\u52a0\u5230\u6587\u4ef6\u7684\u5e95\u90e8\u3002<\/p>\n<div>flask_blog\/app.py<\/div>\n<pre class=\"post-pre\"><code><span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n\r\n<span class=\"token decorator annotation punctuation\">@app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'\/create'<\/span><span class=\"token punctuation\">,<\/span> methods<span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'GET'<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">'POST'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span>\r\n    <span class=\"token keyword\">return<\/span> render_template<span class=\"token punctuation\">(<\/span><span class=\"token string\">'create.html'<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u63a5\u53d7GET\u548cPOST\u8bf7\u6c42\u7684\/create\u8def\u7531\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u63a5\u53d7GET\u8bf7\u6c42\u3002\u82e5\u8981\u63a5\u53d7POST\u8bf7\u6c42\uff08\u63d0\u4ea4\u8868\u5355\u65f6\u6d4f\u89c8\u5668\u53d1\u9001\u7684\u8bf7\u6c42\uff09\uff0c\u60a8\u53ef\u4ee5\u5c06\u63a5\u53d7\u8bf7\u6c42\u7c7b\u578b\u7684\u5143\u7ec4\u4f20\u9012\u7ed9@app.route()\u88c5\u9970\u5668\u7684methods\u53c2\u6570\u3002<\/p>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u8981\u521b\u5efa\u6a21\u677f\uff0c\u8bf7\u5728templates\u6587\u4ef6\u5939\u4e2d\u6253\u5f00\u540d\u4e3acreate.html\u7684\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> templates\/create.html\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u8fd9\u4e2a\u65b0\u6587\u4ef6\u4e2d\u3002<\/p>\n<div>\u8bf7\u4e3a\u6211\u63d0\u4f9b\"create.html\"\u7684\u539f\u751f\u4e2d\u6587\u91ca\u4e49\u3002<\/div>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n\r\n{% block content %}\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{% block title %} \u521b\u5efa\u65b0\u6587\u7ae0 {% endblock %}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>form<\/span> <span class=\"token attr-name\">method<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>post<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>div<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>form-group<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>label<\/span> <span class=\"token attr-name\">for<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>title<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u6807\u9898<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>label<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>text<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>title<span class=\"token punctuation\">\"<\/span><\/span>\r\n               <span class=\"token attr-name\">placeholder<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>\u6587\u7ae0\u6807\u9898<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>form-control<span class=\"token punctuation\">\"<\/span><\/span>\r\n               <span class=\"token attr-name\">value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>{{ request.form['title'] }}<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>input<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>div<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>div<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>form-group<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>label<\/span> <span class=\"token attr-name\">for<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>content<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u5185\u5bb9<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>label<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>textarea<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>content<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">placeholder<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>\u6587\u7ae0\u5185\u5bb9<span class=\"token punctuation\">\"<\/span><\/span>\r\n                  <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>form-control<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{{ request.form['content'] }}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>textarea<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>div<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>div<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>form-group<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>button<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>submit<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>btn btn-primary<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u63d0\u4ea4<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>button<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>div<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>form<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n{% endblock %}\r\n<\/code><\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u5927\u90e8\u5206\u662f\u6807\u51c6\u7684HTML\u3002\u5b83\u4f1a\u663e\u793a\u4e00\u4e2a\u7528\u4e8e\u586b\u5199\u6587\u7ae0\u6807\u9898\u7684\u8f93\u5165\u6846\uff0c\u4e00\u4e2a\u7528\u4e8e\u586b\u5199\u6587\u7ae0\u5185\u5bb9\u7684\u6587\u672c\u533a\u57df\uff0c\u4ee5\u53ca\u4e00\u4e2a\u7528\u4e8e\u63d0\u4ea4\u8868\u5355\u7684\u6309\u94ae\u3002<\/p>\n<p>\u5e16\u5b50\u6807\u9898\u7684\u503c\u662f{{ request.form['title'] }}\uff0c\u6587\u5b57\u533a\u57df\u7684\u503c\u662f{{ request.form['content'] }}\u3002\u8fd9\u6837\u505a\u662f\u4e3a\u4e86\u9632\u6b62\u5728\u51fa\u73b0\u95ee\u9898\u65f6\u4e22\u5931\u60a8\u8f93\u5165\u7684\u6570\u636e\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u5199\u4e86\u4e00\u7bc7\u957f\u7bc7\u6587\u7ae0\u4f46\u5fd8\u8bb0\u7ed9\u5b83\u4e00\u4e2a\u6807\u9898\uff0c\u7cfb\u7edf\u4f1a\u663e\u793a\u4e00\u4e2a\u6d88\u606f\u63d0\u9192\u60a8\u6807\u9898\u662f\u5fc5\u9700\u7684\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\uff0c\u5373\u4f7f\u51fa\u73b0\u9519\u8bef\uff0c\u60a8\u6240\u5199\u7684\u5e16\u5b50\u4e5f\u4e0d\u4f1a\u4e22\u5931\uff0c\u56e0\u4e3a\u5b83\u4f1a\u5b58\u50a8\u5728\u60a8\u53ef\u4ee5\u5728\u6a21\u677f\u4e2d\u8bbf\u95ee\u7684\u8bf7\u6c42\u5168\u5c40\u5bf9\u8c61\u4e2d\u3002<\/p>\n<p>\u73b0\u5728\uff0c\u5f00\u53d1\u670d\u52a1\u5668\u6b63\u5728\u8fd0\u884c\uff0c\u8bf7\u4f7f\u7528\u6d4f\u89c8\u5668\u5bfc\u822a\u5230\/create\u8def\u7531\u3002<\/p>\n<pre class=\"post-pre\"><code>http:\/\/127.0.0.1:5000\/create\r\n<\/code><\/pre>\n<p>\u4f60\u5c06\u4f1a\u770b\u5230\u4e00\u4e2a\u521b\u5efa\u65b0\u5e16\u5b50\u7684\u9875\u9762\uff0c\u5176\u4e2d\u6709\u4e00\u4e2a\u7528\u4e8e\u6807\u9898\u548c\u5185\u5bb9\u7684\u6587\u672c\u6846\u3002<\/p>\n<div>\n    <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65645093a4b2f92e6c72003f\/234-0.png\" class='post-images' alt=\"\u521b\u5efa\u65b0\u5e16\u5b50\u9875\u9762\" title=\"\u521b\u5efa\u65b0\u5e16\u5b50\u9875\u9762\">\n<\/div>\n<p>\u8fd9\u4e2a\u8868\u5355\u5411\u60a8\u7684 create() \u89c6\u56fe\u51fd\u6570\u63d0\u4ea4\u4e86\u4e00\u4e2a POST \u8bf7\u6c42\u3002\u7136\u800c\uff0c\u5728\u8be5\u51fd\u6570\u4e2d\u8fd8\u6ca1\u6709\u5904\u7406 POST \u8bf7\u6c42\u7684\u4ee3\u7801\uff0c\u56e0\u6b64\u5728\u586b\u5199\u5e76\u63d0\u4ea4\u8868\u5355\u540e\u4ec0\u4e48\u4e5f\u4e0d\u4f1a\u53d1\u751f\u3002<\/p>\n<p>\u5f53\u8868\u5355\u63d0\u4ea4\u65f6\uff0c\u60a8\u5c06\u5904\u7406\u4f20\u5165\u7684POST\u8bf7\u6c42\u3002\u60a8\u5c06\u5728create()\u89c6\u56fe\u51fd\u6570\u5185\u90e8\u5b8c\u6210\u8fd9\u4e2a\u64cd\u4f5c\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5request.method\u7684\u503c\u5355\u72ec\u5904\u7406POST\u8bf7\u6c42\u3002\u5f53\u5176\u503c\u8bbe\u7f6e\u4e3a'POST'\u65f6\uff0c\u610f\u5473\u7740\u8bf7\u6c42\u662f\u4e00\u4e2aPOST\u8bf7\u6c42\uff0c\u7136\u540e\u60a8\u5c06\u63d0\u53d6\u63d0\u4ea4\u7684\u6570\u636e\uff0c\u9a8c\u8bc1\u5b83\uff0c\u5e76\u5c06\u5176\u63d2\u5165\u5230\u60a8\u7684\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n<p>\u6253\u5f00 app.py \u6587\u4ef6\u8fdb\u884c\u7f16\u8f91\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> app.py\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u5c06create()\u89c6\u56fe\u51fd\u6570\u4fee\u6539\u4e3a\u5b8c\u5168\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<div>\n<p>Flask\u535a\u5ba2\/app.py<\/p>\n<pre class=\"post-pre\"><code><span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n\r\n<span class=\"token decorator annotation punctuation\">@app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'\/create'<\/span><span class=\"token punctuation\">,<\/span> methods<span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'GET'<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">'POST'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span>\r\n    <mark><span class=\"token keyword\">if<\/span> request<span class=\"token punctuation\">.<\/span>method <span class=\"token operator\">==<\/span> <span class=\"token string\">'POST'<\/span><span class=\"token punctuation\">:<\/span><\/mark>\r\n        <mark>title <span class=\"token operator\">=<\/span> request<span class=\"token punctuation\">.<\/span>form<span class=\"token punctuation\">[<\/span><span class=\"token string\">'title'<\/span><span class=\"token punctuation\">]<\/span><\/mark>\r\n        <mark>content <span class=\"token operator\">=<\/span> request<span class=\"token punctuation\">.<\/span>form<span class=\"token punctuation\">[<\/span><span class=\"token string\">'content'<\/span><span class=\"token punctuation\">]<\/span><\/mark>\r\n\r\n        <mark><span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> title<span class=\"token punctuation\">:<\/span><\/mark>\r\n            <mark>flash<span class=\"token punctuation\">(<\/span><span class=\"token string\">'\u6807\u9898\u662f\u5fc5\u586b\u9879\uff01'<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n        <mark><span class=\"token keyword\">else<\/span><span class=\"token punctuation\">:<\/span><\/mark>\r\n            <mark>conn <span class=\"token operator\">=<\/span> get_db_connection<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n            <mark>conn<span class=\"token punctuation\">.<\/span>execute<span class=\"token punctuation\">(<\/span><span class=\"token string\">'INSERT INTO posts (title, content) VALUES (?, ?)'<\/span><span class=\"token punctuation\">,<\/span><\/mark>\r\n                         <mark><span class=\"token punctuation\">(<\/span>title<span class=\"token punctuation\">,<\/span> content<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n            <mark>conn<span class=\"token punctuation\">.<\/span>commit<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n            <mark>conn<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n            <mark><span class=\"token keyword\">return<\/span> redirect<span class=\"token punctuation\">(<\/span>url_for<span class=\"token punctuation\">(<\/span><span class=\"token string\">'index'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/mark>\r\n\r\n    <span class=\"token keyword\">return<\/span> render_template<span class=\"token punctuation\">(<\/span><span class=\"token string\">'create.html'<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<\/div>\n<p>\u5728if\u8bed\u53e5\u4e2d\uff0c\u60a8\u786e\u4fdd\u53ea\u6709\u5f53\u8bf7\u6c42\u4e3aPOST\u8bf7\u6c42\u65f6\uff0c\u624d\u6267\u884c\u540e\u7eed\u7684\u4ee3\u7801\uff0c\u901a\u8fc7\u6bd4\u8f83request.method == 'POST'\u3002<\/p>\n<p>\u7136\u540e\uff0c\u60a8\u4ecerequest.form\u5bf9\u8c61\u4e2d\u63d0\u53d6\u63d0\u4ea4\u7684\u6807\u9898\u548c\u5185\u5bb9\uff0c\u8be5\u5bf9\u8c61\u4f7f\u60a8\u53ef\u4ee5\u8bbf\u95ee\u8bf7\u6c42\u4e2d\u7684\u8868\u5355\u6570\u636e\u3002\u5982\u679c\u672a\u63d0\u4f9b\u6807\u9898\uff0c\u5219\u4f1a\u6ee1\u8db3\u6761\u4ef6if not title\uff0c\u5411\u7528\u6237\u663e\u793a\u4e00\u6761\u6d88\u606f\uff0c\u544a\u77e5\u4ed6\u4eec\u9700\u8981\u8f93\u5165\u6807\u9898\u3002\u800c\u53e6\u4e00\u65b9\u9762\uff0c\u5982\u679c\u63d0\u4f9b\u4e86\u6807\u9898\uff0c\u5219\u4f1a\u4f7f\u7528get_db_connection()\u51fd\u6570\u6253\u5f00\u8fde\u63a5\uff0c\u5e76\u5c06\u6536\u5230\u7684\u6807\u9898\u548c\u5185\u5bb9\u63d2\u5165\u5230\u5e16\u5b50\u8868\u4e2d\u3002<\/p>\n<p>\u7136\u540e\u4f60\u5c06\u66f4\u6539\u63d0\u4ea4\u5230\u6570\u636e\u5e93\u5e76\u5173\u95ed\u8fde\u63a5\u3002\u5728\u5c06\u535a\u5ba2\u6587\u7ae0\u6dfb\u52a0\u5230\u6570\u636e\u5e93\u4e4b\u540e\uff0c\u4f7f\u7528redirect()\u51fd\u6570\u91cd\u5b9a\u5411\u5ba2\u6237\u7aef\u5230\u4e3b\u9875\uff0c\u5c06\u7531url_for()\u51fd\u6570\u751f\u6210\u7684URL\u503c\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9redirect()\u51fd\u6570\uff0c\u53c2\u6570\u503c\u4e3a'index'\u3002<\/p>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u73b0\u5728\uff0c\u8bf7\u4f7f\u7528\u60a8\u7684\u7f51\u7edc\u6d4f\u89c8\u5668\u5bfc\u822a\u5230\/create\u8def\u7531\u3002<\/p>\n<pre class=\"post-pre\"><code>http:\/\/127.0.0.1:5000\/create\r\n<\/code><\/pre>\n<p>\u586b\u5199\u8868\u5355\uff0c\u9009\u62e9\u4e00\u4e2a\u6807\u9898\u5e76\u586b\u5199\u5185\u5bb9\u3002\u4e00\u65e6\u63d0\u4ea4\u8868\u5355\uff0c\u60a8\u5c06\u5728\u4e3b\u9875\u4e0a\u770b\u5230\u65b0\u53d1\u5e03\u7684\u5e16\u5b50\u3002<\/p>\n<p>\u6700\u540e\uff0c\u5728base.html\u6a21\u677f\u4e2d\uff0c\u60a8\u5c06\u663e\u793a\u95ea\u70c1\u7684\u4fe1\u606f\uff0c\u5e76\u6dfb\u52a0\u4e00\u4e2a\u94fe\u63a5\u5230\u5bfc\u822a\u680f\uff0c\u4ee5\u4fbf\u8f7b\u677e\u8bbf\u95ee\u8fd9\u4e2a\u65b0\u9875\u9762\u3002\u6253\u5f00\u6a21\u677f\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> templates\/base.html\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u5728 <\/p>\n<nav> \u6807\u7b7e\u5185\u7684\"\u5173\u4e8e\"\u94fe\u63a5\u540e\u9762\u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684 <\/p>\n<li> \u6807\u7b7e\u6765\u7f16\u8f91\u8be5\u6587\u4ef6\u3002\u7136\u540e\u5728\u5185\u5bb9\u5757\u4e0a\u65b9\u76f4\u63a5\u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684\u5faa\u73af\u6765\u663e\u793a\u5bfc\u822a\u680f\u4e0b\u65b9\u7684\u95ea\u5b58\u6d88\u606f\u3002\u8fd9\u4e9b\u6d88\u606f\u53ef\u4ee5\u901a\u8fc7 Flask \u63d0\u4f9b\u7684\u7279\u6b8a\u51fd\u6570 get_flashed_messages() \u6765\u83b7\u53d6\u3002<\/p>\n<div>\u8bf7\u7528\u4e2d\u6587\u8fdb\u884c\u672c\u5730\u5316\u7ffb\u8bd1\uff0c\u53ea\u9700\u8981\u63d0\u4f9b\u4e00\u79cd\u9009\u9879\uff1a<br \/>\nflask_blog\/templates\/base.html<\/p>\n<p>\u57fa\u4e8e\u6a21\u677f\u7684HTML\u6587\u4ef6\uff1aflask_blog\/templates\/base.html<\/p>\n<pre class=\"post-pre\"><code><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>nav<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>navbar navbar-expand-md navbar-light bg-light<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>a<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>navbar-brand<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">href<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>{{ url_for('index')}}<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Flask\u535a\u5ba2<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>a<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>button<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>navbar-toggler<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>button<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">data-toggle<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>collapse<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">data-target<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>#navbarNav<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">aria-controls<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>navbarNav<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">aria-expanded<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>false<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">aria-label<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>\u5207\u6362\u5bfc\u822a<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>span<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>navbar-toggler-icon<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>span<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>button<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>div<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>collapse navbar-collapse<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>navbarNav<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ul<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>navbar-nav<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>li<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>nav-item<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>a<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>nav-link<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">href<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>#<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u5173\u4e8e<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>a<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>li<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>li<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>nav-item<span class=\"token punctuation\">\"<\/span><\/span><\/span><\/mark><span class=\"token tag\"><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>a<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>nav-link<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">href<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>{{url_for('create')}}<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u65b0\u5e16\u5b50<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>a<\/span><\/span><\/mark><span class=\"token tag\"><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>li<\/span><\/span><\/mark><span class=\"token tag\"><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ul<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>div<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>nav<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>div<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>container<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>    {% for message in get_flashed_messages() %}<\/mark>\r\n<mark>        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>div<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>alert alert-danger<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{{ message }}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>div<\/span><\/span><\/mark><span class=\"token tag\"><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>    {% endfor %}<\/mark>\r\n    {% block content %} {% endblock %}\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>div<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002\u5bfc\u822a\u680f\u73b0\u5728\u5c06\u6709\u4e00\u4e2a\u94fe\u63a5\u5230\/create\u8def\u5f84\u7684\u65b0\u5e16\u5b50\u9009\u9879\u3002<\/p>\n<h3>\u7f16\u8f91\u4e00\u7bc7\u5e16\u5b50<\/h3>\n<p>\u4e3a\u4e86\u8ba9\u535a\u5ba2\u4fdd\u6301\u6700\u65b0\uff0c\u4f60\u9700\u8981\u80fd\u591f\u7f16\u8f91\u5df2\u6709\u7684\u5e16\u5b50\u3002\u672c\u8282\u5c06\u6307\u5bfc\u4f60\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u9875\u9762\uff0c\u4ee5\u7b80\u5316\u7f16\u8f91\u5e16\u5b50\u7684\u8fc7\u7a0b\u3002<\/p>\n<p>\u9996\u5148\uff0c\u5728app.py\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684\u8def\u7531\u3002\u5176\u89c6\u56fe\u51fd\u6570\u5c06\u63a5\u6536\u9700\u8981\u7f16\u8f91\u7684\u5e16\u5b50\u7684ID\uff0cURL\u7684\u683c\u5f0f\u5c06\u4e3a\/post_id\/edit\uff0c\u5176\u4e2dpost_id\u53d8\u91cf\u5c06\u662f\u5e16\u5b50\u7684ID\u3002\u6253\u5f00app.py\u6587\u4ef6\u8fdb\u884c\u7f16\u8f91\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> app.py<\/li><\/ol><\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u5728\u6587\u4ef6\u672b\u5c3e\u6dfb\u52a0\u4ee5\u4e0b\u7684edit() \u89c6\u56fe\u51fd\u6570\u3002\u7f16\u8f91\u4e00\u4e2a\u73b0\u6709\u7684\u5e16\u5b50\u4e0e\u521b\u5efa\u65b0\u5e16\u5b50\u7c7b\u4f3c\uff0c\u6240\u4ee5\u8fd9\u4e2a\u89c6\u56fe\u51fd\u6570\u5c06\u4e0ecreate() \u89c6\u56fe\u51fd\u6570\u76f8\u4f3c\u3002<\/p>\n<p>flask_blog\/app.py<\/p>\n<pre class=\"post-pre\"><code><span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">.<\/span>\r\n\r\n<span class=\"token decorator annotation punctuation\">@app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'\/&lt;int:id&gt;\/edit'<\/span><span class=\"token punctuation\">,<\/span> methods<span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'GET'<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">'POST'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">edit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token builtin\">id<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span>\r\n    post <span class=\"token operator\">=<\/span> get_post<span class=\"token punctuation\">(<\/span><span class=\"token builtin\">id<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n    <span class=\"token keyword\">if<\/span> request<span class=\"token punctuation\">.<\/span>method <span class=\"token operator\">==<\/span> <span class=\"token string\">'POST'<\/span><span class=\"token punctuation\">:<\/span>\r\n        title <span class=\"token operator\">=<\/span> request<span class=\"token punctuation\">.<\/span>form<span class=\"token punctuation\">[<\/span><span class=\"token string\">'title'<\/span><span class=\"token punctuation\">]<\/span>\r\n        content <span class=\"token operator\">=<\/span> request<span class=\"token punctuation\">.<\/span>form<span class=\"token punctuation\">[<\/span><span class=\"token string\">'content'<\/span><span class=\"token punctuation\">]<\/span>\r\n\r\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> title<span class=\"token punctuation\">:<\/span>\r\n            flash<span class=\"token punctuation\">(<\/span><span class=\"token string\">'\u6807\u9898\u662f\u5fc5\u9700\u7684\uff01'<\/span><span class=\"token punctuation\">)<\/span>\r\n        <span class=\"token keyword\">else<\/span><span class=\"token punctuation\">:<\/span>\r\n            conn <span class=\"token operator\">=<\/span> get_db_connection<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n            conn<span class=\"token punctuation\">.<\/span>execute<span class=\"token punctuation\">(<\/span><span class=\"token string\">'UPDATE posts SET title = ?, content = ?'<\/span>\r\n                         <span class=\"token string\">' WHERE id = ?'<\/span><span class=\"token punctuation\">,<\/span>\r\n                         <span class=\"token punctuation\">(<\/span>title<span class=\"token punctuation\">,<\/span> content<span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">id<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n            conn<span class=\"token punctuation\">.<\/span>commit<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n            conn<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n            <span class=\"token keyword\">return<\/span> redirect<span class=\"token punctuation\">(<\/span>url_for<span class=\"token punctuation\">(<\/span><span class=\"token string\">'index'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n    <span class=\"token keyword\">return<\/span> render_template<span class=\"token punctuation\">(<\/span><span class=\"token string\">'edit.html'<\/span><span class=\"token punctuation\">,<\/span> post<span class=\"token operator\">=<\/span>post<span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7URL\u786e\u5b9a\u60a8\u8981\u7f16\u8f91\u7684\u5e16\u5b50\uff0c\u5e76\u4e14Flask\u5c06\u901a\u8fc7id\u53c2\u6570\u5c06ID\u53f7\u4f20\u9012\u7ed9edit()\u51fd\u6570\u3002\u5c06\u6b64\u503c\u6dfb\u52a0\u5230get_post()\u51fd\u6570\u4e2d\uff0c\u4ee5\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u4e0e\u63d0\u4f9b\u7684ID\u5173\u8054\u7684\u5e16\u5b50\u3002\u65b0\u6570\u636e\u5c06\u4f5c\u4e3aPOST\u8bf7\u6c42\u53d1\u9001\uff0c\u5e76\u5728if request.method == 'POST'\u6761\u4ef6\u4e4b\u5185\u8fdb\u884c\u5904\u7406\u3002<\/p>\n<p>\u5c31\u50cf\u4f60\u521b\u5efa\u65b0\u5e16\u5b50\u65f6\u4e00\u6837\uff0c\u9996\u5148\u4ecerequest.form\u5bf9\u8c61\u4e2d\u63d0\u53d6\u6570\u636e\uff0c\u7136\u540e\u5982\u679c\u6807\u9898\u4e3a\u7a7a\u503c\uff0c\u5c31\u4f1a\u663e\u793a\u4e00\u6761\u6d88\u606f\uff1b\u5426\u5219\uff0c\u4f60\u4f1a\u6253\u5f00\u6570\u636e\u5e93\u8fde\u63a5\u3002\u7136\u540e\uff0c\u901a\u8fc7\u5c06\u6570\u636e\u5e93\u4e2d\u5e16\u5b50\u7684ID\u4e0eURL\u4e2d\u7684ID\u76f8\u5339\u914d\uff0c\u4f60\u4f1a\u66f4\u65b0\u5e16\u5b50\u8868\uff0c\u8bbe\u7f6e\u65b0\u7684\u6807\u9898\u548c\u5185\u5bb9\u3002<\/p>\n<p>\u5728GET\u8bf7\u6c42\u7684\u60c5\u51b5\u4e0b\uff0c\u4f60\u4f1a\u52a0\u8f7d\u4e00\u4e2aedit.html\u6a21\u677f\uff0c\u5e76\u4f20\u9012post\u53d8\u91cf\uff0c\u8be5\u53d8\u91cf\u4fdd\u5b58\u4e86get_post()\u51fd\u6570\u7684\u8fd4\u56de\u503c\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u53d8\u91cf\u5728\u7f16\u8f91\u9875\u9762\u4e0a\u663e\u793a\u73b0\u6709\u7684\u6807\u9898\u548c\u5185\u5bb9\u3002<\/p>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\uff0c\u7136\u540e\u521b\u5efa\u4e00\u4e2a\u65b0\u7684edit.html\u6a21\u677f\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> templates\/edit.html<\/li><\/ol><\/code><\/pre>\n<p>\u5c06\u4ee5\u4e0b\u4ee3\u7801\u5199\u5165\u6b64\u65b0\u6587\u4ef6\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n\r\n{% block content %}\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{% block title %} \u7f16\u8f91 \"{{ post['title'] }}\" {% endblock %}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>form<\/span> <span class=\"token attr-name\">method<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>post<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>div<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>form-group<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>label<\/span> <span class=\"token attr-name\">for<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>title<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u6807\u9898<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>label<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>text<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>title<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">placeholder<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>\u6587\u7ae0\u6807\u9898<span class=\"token punctuation\">\"<\/span><\/span>\r\n               <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>form-control<span class=\"token punctuation\">\"<\/span><\/span>\r\n               <span class=\"token attr-name\">value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>{{ request.form['title'] or post['title'] }}<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>div<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>div<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>form-group<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>label<\/span> <span class=\"token attr-name\">for<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>content<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u5185\u5bb9<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>label<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>textarea<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>content<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">placeholder<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>\u6587\u7ae0\u5185\u5bb9<span class=\"token punctuation\">\"<\/span><\/span>\r\n                  <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>form-control<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{{ request.form['content'] or post['content'] }}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>textarea<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>div<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>div<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>form-group<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>button<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>submit<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>btn btn-primary<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u63d0\u4ea4<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>button<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>div<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>form<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>hr<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n{% endblock %}\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u9075\u5faa\u76f8\u540c\u7684\u6a21\u5f0f\uff0c\u9664\u4e86{{ request.form['title'] or post['title'] }}\u548c{{ request.form['content'] or post['content'] }}\u7684\u8bed\u6cd5\u4e0d\u540c\u3002\u5982\u679c\u8bf7\u6c42\u4e2d\u5b58\u5728\u6570\u636e\uff0c\u5219\u663e\u793a\u5b58\u50a8\u5728\u8bf7\u6c42\u4e2d\u7684\u6570\u636e\uff0c\u5426\u5219\u663e\u793a\u4f20\u9012\u7ed9\u5305\u542b\u5f53\u524d\u6570\u636e\u5e93\u6570\u636e\u7684\u6a21\u677f\u7684post\u53d8\u91cf\u4e2d\u7684\u6570\u636e\u3002<\/p>\n<p>\u73b0\u5728\uff0c\u8bf7\u5bfc\u822a\u5230\u4ee5\u4e0b\u7f51\u5740\u4ee5\u7f16\u8f91\u7b2c\u4e00\u7bc7\u5e16\u5b50\uff1a<\/p>\n<pre class=\"post-pre\"><code>http:\/\/127.0.0.1:5000\/1\/edit\r\n<\/code><\/pre>\n<p>\u4f60\u4f1a\u770b\u5230\u4e00\u4e2a\u201c\u7f16\u8f91\u9996\u8d34\u201d\u9875\u9762\u3002<\/p>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65645093a4b2f92e6c72003f\/275-0.png\" class='post-images' alt=\"Edit a Post Page\" title=\"\"><\/p>\n<p>\u7f16\u8f91\u5e16\u5b50\u5e76\u63d0\u4ea4\u8868\u5355\uff0c\u7136\u540e\u786e\u8ba4\u5e16\u5b50\u5df2\u66f4\u65b0\u3002<\/p>\n<p>\u4f60\u73b0\u5728\u9700\u8981\u5728\u4e3b\u9875\u4e0a\u4e3a\u6bcf\u7bc7\u5e16\u5b50\u6dfb\u52a0\u4e00\u4e2a\u6307\u5411\u7f16\u8f91\u9875\u9762\u7684\u94fe\u63a5\u3002\u6253\u5f00index.html\u6a21\u677f\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> templates\/index.html\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u8bf7\u5c06\u6587\u4ef6\u7f16\u8f91\u6210\u4e0e\u4ee5\u4e0b\u5185\u5bb9\u5b8c\u5168\u4e00\u6837\u7684\u6837\u5f0f\u3002<\/p>\n<div>\u4ec5\u63d0\u4f9b\u4e00\u4e2a\u9009\u9879\uff0c\u8bf7\u5c06\u4ee5\u4e0b\u5185\u5bb9\u4ee5\u4e2d\u6587\u6bcd\u8bed\u65b9\u5f0f\u6539\u8ff0\uff1a<br \/>\nflask_blog\/templates\/index.html<\/p>\n<p>Flask\u535a\u5ba2\u6a21\u677f\u7684\u4e3b\u9875\uff08index.html\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n\r\n{% block content %}\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{% block title %} Welcome to FlaskBlog {% endblock %}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    {% for post in posts %}\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>a<\/span> <span class=\"token attr-name\">href<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>{{ url_for('post', post_id=post['id']) }}<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>h2<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{{ post['title'] }}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h2<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>a<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>span<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>badge badge-primary<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>{{ post['created'] }}<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>span<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>a<\/span> <span class=\"token attr-name\">href<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>{{ url_for('edit', id=post['id']) }}<span class=\"token punctuation\">\"<\/span><\/span><\/span><\/mark><span class=\"token tag\"><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>span<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>badge badge-warning<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Edit<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>span<\/span><\/span><\/mark><span class=\"token tag\"><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<mark>        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>a<\/span><\/span><\/mark><span class=\"token tag\"><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>hr<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    {% endfor %}\r\n{% endblock %}\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u4f60\u53ef\u4ee5\u6dfb\u52a0\u4e00\u4e2a<a>\u6807\u7b7e\u6765\u94fe\u63a5\u5230edit()\u89c6\u56fe\u51fd\u6570\uff0c\u5c06post['id']\u7684\u503c\u4f20\u9012\u7ed9\u94fe\u63a5\u5230\u6bcf\u7bc7\u5e16\u5b50\u7684\u7f16\u8f91\u9875\u9762\uff0c\u5e76\u663e\u793a\u4e3a\"\u7f16\u8f91\"\u94fe\u63a5\u3002<\/p>\n<h3>\u5220\u9664\u4e00\u7bc7\u5e16\u5b50<\/p>\n<p>\u6709\u65f6\u5019\u4e00\u4e2a\u5e16\u5b50\u4e0d\u518d\u9700\u8981\u516c\u5f00\u8bbf\u95ee\uff0c\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5220\u9664\u5e16\u5b50\u7684\u529f\u80fd\u81f3\u5173\u91cd\u8981\u7684\u539f\u56e0\u3002\u5728\u8fd9\u4e00\u6b65\u4e2d\uff0c\u4f60\u5c06\u4e3a\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u6dfb\u52a0\u5220\u9664\u529f\u80fd\u3002<\/p>\n<p>\u9996\u5148\uff0c\u4f60\u5c06\u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684\/ID\/delete\u8def\u7531\uff0c\u63a5\u53d7POST\u8bf7\u6c42\uff0c\u4e0eedit()\u89c6\u56fe\u51fd\u6570\u7c7b\u4f3c\u3002\u4f60\u7684\u65b0delete()\u89c6\u56fe\u51fd\u6570\u5c06\u4eceURL\u4e2d\u63a5\u6536\u5230\u9700\u8981\u88ab\u5220\u9664\u7684\u5e16\u5b50\u7684ID\u3002\u6253\u5f00app.py\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> app.py\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u5728\u6587\u4ef6\u5e95\u90e8\u6dfb\u52a0\u4ee5\u4e0b\u89c6\u56fe\u51fd\u6570\u3002<\/p>\n<div>\u7ffb\u8bd1\u6210\u4e2d\u6587\u540e\uff0c\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879\uff1a<br \/>\n\u74f6\u5b50\u535a\u5ba2\/\u5e94\u7528\u7a0b\u5e8f.py<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\"># ....<\/span>\r\n\r\n<span class=\"token decorator annotation punctuation\">@app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'\/&lt;int:id&gt;\/delete'<\/span><span class=\"token punctuation\">,<\/span> methods<span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'POST'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">delete<\/span><span class=\"token punctuation\">(<\/span><span class=\"token builtin\">id<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span>\r\n    post <span class=\"token operator\">=<\/span> get_post<span class=\"token punctuation\">(<\/span><span class=\"token builtin\">id<\/span><span class=\"token punctuation\">)<\/span>\r\n    conn <span class=\"token operator\">=<\/span> get_db_connection<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n    conn<span class=\"token punctuation\">.<\/span>execute<span class=\"token punctuation\">(<\/span><span class=\"token string\">'DELETE FROM posts WHERE id = ?'<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token builtin\">id<\/span><span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n    conn<span class=\"token punctuation\">.<\/span>commit<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n    conn<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\r\n    flash<span class=\"token punctuation\">(<\/span><span class=\"token string\">'\"{}\" was successfully deleted!'<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">format<\/span><span class=\"token punctuation\">(<\/span>post<span class=\"token punctuation\">[<\/span><span class=\"token string\">'title'<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n    <span class=\"token keyword\">return<\/span> redirect<span class=\"token punctuation\">(<\/span>url_for<span class=\"token punctuation\">(<\/span><span class=\"token string\">'index'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u89c6\u56fe\u51fd\u6570\u53ea\u63a5\u53d7POST\u8bf7\u6c42\u3002\u8fd9\u610f\u5473\u7740\u5728\u6d4f\u89c8\u5668\u4e2d\u76f4\u63a5\u8bbf\u95ee\/ID\/delete\u8def\u7531\u5c06\u4f1a\u8fd4\u56de\u9519\u8bef\uff0c\u56e0\u4e3a\u7f51\u7edc\u6d4f\u89c8\u5668\u9ed8\u8ba4\u4f7f\u7528GET\u8bf7\u6c42\u3002\u4e0d\u8fc7\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e2a\u8868\u5355\u6765\u8bbf\u95ee\u6b64\u8def\u7531\uff0c\u8be5\u8868\u5355\u4f1a\u53d1\u9001\u4e00\u4e2a\u5e26\u6709\u8981\u5220\u9664\u7684\u5e16\u5b50ID\u7684POST\u8bf7\u6c42\u3002\u8be5\u51fd\u6570\u4f1a\u63a5\u6536ID\u503c\uff0c\u5e76\u4f7f\u7528\u5b83\u901a\u8fc7get_post()\u51fd\u6570\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u5bf9\u5e94\u7684\u5e16\u5b50\u3002\u7136\u540e\uff0c\u60a8\u6253\u5f00\u4e00\u4e2a\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u6267\u884cDELETE FROM SQL\u547d\u4ee4\u6765\u5220\u9664\u8be5\u5e16\u5b50\u3002\u60a8\u5c06\u66f4\u6539\u63d0\u4ea4\u5230\u6570\u636e\u5e93\u5e76\u5173\u95ed\u8fde\u63a5\uff0c\u540c\u65f6\u53d1\u9001\u4e00\u6761\u6d88\u606f\u544a\u77e5\u7528\u6237\u5e16\u5b50\u5df2\u6210\u529f\u5220\u9664\uff0c\u5e76\u5c06\u7528\u6237\u91cd\u5b9a\u5411\u5230\u4e3b\u9875\u3002\u8bf7\u6ce8\u610f\uff0c\u60a8\u4e0d\u9700\u8981\u6e32\u67d3\u6a21\u677f\u6587\u4ef6\uff0c\u56e0\u4e3a\u60a8\u53ea\u9700\u5728\u7f16\u8f91\u9875\u9762\u4e0a\u6dfb\u52a0\u4e00\u4e2a\u5220\u9664\u6309\u94ae\u5373\u53ef\u3002<\/p>\n<p>\u73b0\u5728\uff0c\u6253\u5f00edit.html\u6a21\u677f\u6587\u4ef6\uff1a<\/p>\n<pre class=\"post-pre\"><code><ol><li data-prefix=\"(env)sammy@localhost:$\"><span class=\"token function\">nano<\/span> templates\/edit.html\r\n<\/li><\/ol>\r\n<\/code><\/pre>\n<p>\u7136\u540e\u5728 <code>&lt;hr&gt;<\/code> \u6807\u7b7e\u4e4b\u540e\uff0c\u76f4\u63a5\u5728 <code>{% endblock %}<\/code> \u884c\u4e4b\u524d\u6dfb\u52a0\u4ee5\u4e0b <code>&lt;form&gt;<\/code> \u6807\u7b7e\u3002<\/p>\n<div class=\"file-path\">flask_blog\/templates\/edit.html<\/div>\n<pre class=\"post-pre\"><code><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>hr<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>form<\/span> <span class=\"token attr-name\">action<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>{{ url_for('delete', id=post['id']) }}<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">method<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>POST<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>input<\/span> <span class=\"token attr-name\">type<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>submit<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>\u5220\u9664\u6587\u7ae0<span class=\"token punctuation\">\"<\/span><\/span>\r\n            <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span>btn btn-danger btn-sm<span class=\"token punctuation\">\"<\/span><\/span>\r\n            <span class=\"token special-attr\"><span class=\"token attr-name\">onclick<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">=<\/span><span class=\"token punctuation\">\"<\/span><span class=\"token value javascript language-javascript\"><span class=\"token keyword control-flow\">return<\/span> <span class=\"token function\">confirm<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'\u60a8\u786e\u5b9a\u8981\u5220\u9664\u8fd9\u7bc7\u6587\u7ae0\u5417\uff1f'<\/span><span class=\"token punctuation\">)<\/span><\/span><span class=\"token punctuation\">\"<\/span><\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>form<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\r\n\r\n{% endblock %}\r\n<\/code><\/pre>\n<p>\u5728\u63d0\u4ea4\u8bf7\u6c42\u4e4b\u524d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528confirm()\u65b9\u6cd5\u6765\u663e\u793a\u786e\u8ba4\u4fe1\u606f\u3002<\/p>\n<p>\u73b0\u5728\u518d\u6b21\u5bfc\u822a\u5230\u535a\u5ba2\u6587\u7ae0\u7684\u7f16\u8f91\u9875\u9762\uff0c\u7136\u540e\u5c1d\u8bd5\u5220\u9664\u5b83\u3002<\/p>\n<pre class=\"post-pre\"><code>http:\/\/127.0.0.1:5000\/<mark>1<\/mark>\/edit\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e00\u6b65\u9aa4\u7ed3\u675f\u540e\uff0c\u4f60\u7684\u9879\u76ee\u7684\u6e90\u4ee3\u7801\u5c06\u4e0e\u6b64\u9875\u9762\u4e0a\u7684\u4ee3\u7801\u76f8\u4f3c\u3002<\/p>\n<p>\u6709\u4e86\u8fd9\u4e2a\u529f\u80fd\uff0c\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u7528\u6237\u53ef\u4ee5\u73b0\u5728\u64b0\u5199\u65b0\u7684\u535a\u5ba2\u6587\u7ae0\u5e76\u6dfb\u52a0\u5230\u6570\u636e\u5e93\u4e2d\uff0c\u7f16\u8f91\u548c\u5220\u9664\u73b0\u6709\u7684\u6587\u7ae0\u3002<\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u672c\u6559\u7a0b\u4ecb\u7ecd\u4e86Flask 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[&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1301,32,280,330,323],"class_list":{"0":"post-442","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"tag-flask","8":"tag-python","10":"tag-web"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python Flask\u5b8c\u6574\u6307\u5357\uff1a\u5feb\u901f\u6784\u5efaWeb\u5e94\u7528\u7684\u5b9e\u7528\u6559\u7a0b - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u672c\u6559\u7a0b\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Python 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