{"id":407,"date":"2023-01-14T20:39:45","date_gmt":"2023-11-29T18:21:53","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8flask%e8%93%9d%e5%9b%be%e5%92%8cflask-sqlalchemy%e6%9e%84%e5%bb%ba%e4%b8%80%e4%b8%aa%e5%a4%a7%e5%9e%8b%e7%9a%84flask%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%e3%80%82\/"},"modified":"2025-08-02T05:41:29","modified_gmt":"2025-08-01T21:41:29","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8flask%e8%93%9d%e5%9b%be%e5%92%8cflask-sqlalchemy%e6%9e%84%e5%bb%ba%e4%b8%80%e4%b8%aa%e5%a4%a7%e5%9e%8b%e7%9a%84flask%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8flask%e8%93%9d%e5%9b%be%e5%92%8cflask-sqlalchemy%e6%9e%84%e5%bb%ba%e4%b8%80%e4%b8%aa%e5%a4%a7%e5%9e%8b%e7%9a%84flask%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%e3%80%82\/","title":{"rendered":"Flask\u4f01\u4e1a\u7ea7\u5e94\u7528\u5f00\u53d1\uff1a\u84dd\u56fe\u4e0eSQLAlchemy\u6700\u4f73\u5b9e\u8df5"},"content":{"rendered":"<h3>\u5f15\u8a00<\/h3>\n<p>Flask\u662f\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684Python\u7f51\u7edc\u6846\u67b6\uff0c\u5177\u5907\u7528\u4e8e\u5728Python\u4e2d\u521b\u5efa\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f\u7684\u6709\u7528\u5de5\u5177\u548c\u529f\u80fd\u3002SQLAlchemy\u662f\u4e00\u4e2aSQL\u5de5\u5177\u5305\uff0c\u4e3a\u5173\u7cfb\u578b\u6570\u636e\u5e93\u63d0\u4f9b\u9ad8\u6548\u4e14\u9ad8\u6027\u80fd\u7684\u8bbf\u95ee\u3002\u5b83\u63d0\u4f9b\u4e86\u4e0e\u591a\u4e2a\u6570\u636e\u5e93\u5f15\u64ce\uff08\u5982SQLite\u3001MySQL\u548cPostgreSQL\uff09\u4ea4\u4e92\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u63d0\u4f9b\u5bf9\u6570\u636e\u5e93\u7684SQL\u529f\u80fd\u7684\u8bbf\u95ee\u3002\u8be5\u5de5\u5177\u5305\u8fd8\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5bf9\u8c61\u5173\u7cfb\u6620\u5c04\u5668\uff08ORM\uff09\uff0c\u4f7f\u60a8\u80fd\u591f\u4f7f\u7528\u7b80\u5355\u7684Python\u5bf9\u8c61\u548c\u65b9\u6cd5\u8fdb\u884c\u67e5\u8be2\u548c\u5904\u7406\u6570\u636e\u3002Flask-SQLAlchemy\u662fFlask\u7684\u6269\u5c55\uff0c\u4f7f\u5f97\u5728Flask\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528SQLAlchemy\u66f4\u52a0\u5bb9\u6613\uff0c\u63d0\u4f9b\u4e86\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u7684\u5de5\u5177\u548c\u65b9\u6cd5\u3002<\/p>\n<p>Flask\u63d0\u4f9b\u4e86\u4e00\u79cd\u5feb\u901f\u6784\u5efa\u5c0f\u578bWeb\u5e94\u7528\u7a0b\u5e8f\u7684\u65b9\u5f0f\uff0c\u53ea\u9700\u4e00\u4e2aPython\u6587\u4ef6\u3002\u7136\u800c\uff0c\u4e00\u4e2a\u5c0f\u5e94\u7528\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u9010\u6e10\u53d1\u5c55\u6210\u5177\u6709\u591a\u4e2a\u6570\u636e\u5e93\u8868\u3001\u6570\u767e\u4e2a\u8def\u7531\u548c\u590d\u6742\u529f\u80fd\u7684\u5927\u578b\u5e94\u7528\u7a0b\u5e8f\u3002\u5728\u4e00\u4e2a\u6587\u4ef6\u4e2d\u7f16\u5199\u5927\u578b\u5e94\u7528\u7a0b\u5e8f\u7684\u4ee3\u7801\u5c06\u5f88\u5feb\u53d8\u5f97\u6742\u4e71\u4e14\u96be\u4ee5\u7ba1\u7406\u3002Flask\u5141\u8bb8\u60a8\u901a\u8fc7\u5c06\u5e94\u7528\u7a0b\u5e8f\u7684\u4e3b\u8981\u90e8\u5206\u62c6\u5206\u5230\u7279\u5b9a\u7684\u76ee\u5f55\u548c\u6587\u4ef6\u4e2d\u6765\u7ec4\u7ec7\u5e94\u7528\u7a0b\u5e8f\u7684\u4ee3\u7801\u5e93\uff0c\u4ee5\u83b7\u5f97\u4e00\u4e2a\u66f4\u6709\u7ec4\u7ec7\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<p>\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u5728\u4e00\u4e2a\u793e\u4ea4\u5a92\u4f53\u5e94\u7528\u4e2d\uff0c\u4f60\u53ef\u80fd\u4f1a\u5728\u4e00\u4e2a\u540d\u4e3aroutes.py\u7684\u6587\u4ef6\u4e2d\u4fdd\u5b58\u7528\u6237\u7684\u8def\u7531\uff0c\u8be5\u6587\u4ef6\u4f4d\u4e8e\u4e00\u4e2a\u540d\u4e3ausers\u7684\u76ee\u5f55\u5185\u3002\u7136\u540e\uff0c\u4f60\u53ef\u4ee5\u5728\u4e00\u4e2a\u540d\u4e3ausers.py\u7684\u6a21\u5757\u4e2d\u6536\u96c6\u7528\u6237\u7684\u6570\u636e\u5e93\u6a21\u578b\uff0c\u8be5\u6a21\u5757\u4f4d\u4e8e\u4e00\u4e2a\u540d\u4e3amodels\u7684\u76ee\u5f55\u5185\u3002\u63a5\u4e0b\u6765\uff0c\u4f60\u53ef\u4ee5\u4ee5\u76f8\u540c\u7684\u65b9\u5f0f\u4e3a\u5e16\u5b50\u3001\u5173\u6ce8\u8005\u3001\u6807\u7b7e\u3001\u95ee\u9898\u3001\u7b54\u6848\u3001\u5e7f\u544a\u3001\u5e02\u573a\u548c\u652f\u4ed8\u7b49\u529f\u80fd\u505a\u76f8\u5e94\u7684\u8bbe\u7f6e\u5728\u4f60\u529f\u80fd\u590d\u6742\u7684\u793e\u4ea4\u5a92\u4f53\u5e94\u7528\u4e2d\u3002\u5982\u679c\u4f60\u60f3\u8981\u5c06\u4e00\u4e9b\u4e1a\u52a1\u903b\u8f91\u7f16\u8f91\u5230\u652f\u4ed8\u4ee3\u7801\u4e2d\uff0c\u4f60\u53ef\u4ee5\u5728mysocialapp\/models\/payment.py\u6587\u4ef6\u4e2d\u66f4\u6539\u652f\u4ed8\u7684\u6570\u636e\u5e93\u4ee3\u7801\uff0c\u7136\u540e\u5728mysocialapp\/payments\/routes.py\u6587\u4ef6\u4e2d\u66f4\u6539\u76f8\u5e94\u7684\u4e1a\u52a1\u903b\u8f91\u3002\u6bcf\u4e2a\u5e94\u7528\u7684\u90e8\u5206\u90fd\u4f1a\u5728\u4e0d\u540c\u7684\u6587\u4ef6\u548c\u76ee\u5f55\u4e2d\u72ec\u7acb\u8fdb\u884c\u4ee3\u7801\u9694\u79bb\uff0c\u8fd9\u6709\u6548\u5730\u5c06\u5e94\u7528\u7a0b\u5e8f\u62c6\u5206\u6210\u6613\u4e8e\u7ba1\u7406\u7684\u7ec4\u4ef6\u3002\u8fd9\u79cd\u7ed3\u6784\u8fd8\u6709\u52a9\u4e8e\u8ba9\u65b0\u5f00\u53d1\u4eba\u5458\u719f\u6089\u4f60\u7684\u5e94\u7528\uff0c\u4ee5\u4f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\u63d0\u4f9b\u4e86\u4e00\u79cd\u79f0\u4e3a\u84dd\u56fe\u7684\u529f\u80fd\uff0c\u7528\u4e8e\u521b\u5efa\u5e94\u7528\u7a0b\u5e8f\u7ec4\u4ef6\u3002\u5728\u4e4b\u524d\u7684\u4f8b\u5b50\u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u84dd\u56fe\u6765\u6784\u5efa\u4e00\u4e2a\u5927\u578b\u793e\u4ea4\u5a92\u4f53\u5e94\u7528\u7a0b\u5e8f\uff0c\u6bcf\u4e2a\u529f\u80fd\u90fd\u6709\u4e0d\u540c\u7684\u84dd\u56fe\uff0c\u6bd4\u5982\u7528\u6237\u7684\u84dd\u56fe\u3001\u5e16\u5b50\u7684\u84dd\u56fe\u3001\u5173\u6ce8\u8005\u7684\u84dd\u56fe\u7b49\u7b49\uff0c\u4ee5\u6b64\u7ed3\u6784\u5316\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u60a8\u5c06\u4f7f\u7528Flask\u84dd\u56fe\u4e3a\u4e00\u4e2a\u5177\u5907\u4e09\u4e2a\u7ec4\u4ef6\u7684web\u5e94\u7528\u7a0b\u5e8f\u8fdb\u884c\u7ed3\u6784\u5316\uff0c\u4e3b\u8981\u84dd\u56fe\u5305\u542b\u9996\u9875\u548c\u5176\u4ed6\u4e3b\u8981\u8def\u7531\uff0c\u6587\u7ae0\u84dd\u56fe\u8d1f\u8d23\u7ba1\u7406\u535a\u5ba2\u6587\u7ae0\uff0c\u95ee\u9898\u84dd\u56fe\u8d1f\u8d23\u5904\u7406\u95ee\u9898\u548c\u7b54\u6848\u3002<\/p>\n<h2>\u5148\u51b3\u6761\u4ef6<\/h2>\n<ul class=\"post-ul\">\n<li>\u4e00\u4e2a\u672c\u5730Python 3\u7f16\u7a0b\u73af\u5883\uff0c\u60a8\u53ef\u4ee5\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\u8bbe\u7f6e\u3002\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u6211\u4eec\u7684\u9879\u76ee\u76ee\u5f55\u79f0\u4e3aflask_app\u3002<\/li>\n<li>\u5bf9\u57fa\u672cFlask\u6982\u5ff5\u7684\u7406\u89e3\uff0c\u5982\u8def\u7531\u3001\u89c6\u56fe\u51fd\u6570\u548c\u6a21\u677f\u3002\u5982\u679c\u60a8\u4e0d\u719f\u6089Flask\uff0c\u8bf7\u67e5\u770b\u300a\u5982\u4f55\u4f7f\u7528Flask\u548cPython\u521b\u5efa\u60a8\u7684\u7b2c\u4e00\u4e2aWeb\u5e94\u7528\u7a0b\u5e8f\u300b\u548c\u300a\u5982\u4f55\u5728Flask\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u6a21\u677f\u300b\u3002<\/li>\n<li>\u5bf9\u57fa\u672cHTML\u6982\u5ff5\u7684\u7406\u89e3\u3002\u60a8\u53ef\u4ee5\u67e5\u770b\u6211\u4eec\u7684\u300a\u5982\u4f55\u4f7f\u7528HTML\u6784\u5efa\u7f51\u7ad9\u300b\u6559\u7a0b\u7cfb\u5217\u4ee5\u83b7\u53d6\u80cc\u666f\u77e5\u8bc6\u3002<\/li>\n<li>\u5bf9\u57fa\u672cFlask-SQLAlchemy\u6982\u5ff5\u7684\u7406\u89e3\uff0c\u5982\u8bbe\u7f6e\u6570\u636e\u5e93\u3001\u521b\u5efa\u6570\u636e\u5e93\u6a21\u578b\u548c\u5c06\u6570\u636e\u63d2\u5165\u6570\u636e\u5e93\u3002\u8bf7\u53c2\u9605\u300a\u5982\u4f55\u5728Flask\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528Flask-SQLAlchemy\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u300b\u4ee5\u83b7\u53d6\u80cc\u666f\u77e5\u8bc6\u3002<\/li>\n<\/ul>\n<h2>\u76ee\u6807\u5e94\u7528\u7ed3\u6784<\/h2>\n<p>\u5728\u6559\u7a0b\u7ed3\u675f\u65f6\uff0c\u60a8\u5c06\u5b8c\u6210\u4e00\u4e2a\u62e5\u6709\u4ee5\u4e0b\u7ed3\u6784\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<pre class=\"post-pre\"><code>.\r\n\u2514\u2500\u2500 flask_app\r\n    \u251c\u2500\u2500 app\r\n    \u2502   \u251c\u2500\u2500 extensions.py\r\n    \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u251c\u2500\u2500 main\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u251c\u2500\u2500 models\r\n    \u2502   \u2502   \u251c\u2500\u2500 post.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 question.py\r\n    \u2502   \u251c\u2500\u2500 posts\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u251c\u2500\u2500 questions\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u2514\u2500\u2500 templates\r\n    \u2502       \u251c\u2500\u2500 base.html\r\n    \u2502       \u251c\u2500\u2500 index.html\r\n    \u2502       \u251c\u2500\u2500 posts\r\n    \u2502       \u2502   \u251c\u2500\u2500 categories.html\r\n    \u2502       \u2502   \u2514\u2500\u2500 index.html\r\n    \u2502       \u2514\u2500\u2500 questions\r\n    \u2502           \u2514\u2500\u2500 index.html\r\n    \u251c\u2500\u2500 app.db\r\n    \u2514\u2500\u2500 config.py\r\n<\/code><\/pre>\n<p>\u5728\u60a8\u7684flask_app\u76ee\u5f55\u4e2d\uff0c\u60a8\u5c06\u6709\u4e00\u4e2a\u540d\u4e3aapp.db\u7684\u6570\u636e\u5e93\u6587\u4ef6\u548c\u4e00\u4e2a\u540d\u4e3aconfig.py\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u7684\u914d\u7f6e\u6587\u4ef6\u3002\u4e3b\u8981\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u5c06\u4f4d\u4e8eapp\u76ee\u5f55\u4e2d\uff0c\u8be5\u76ee\u5f55\u5c06\u6709\u4e00\u4e2a\u540d\u4e3a__init__.py\u7684\u7279\u6b8a\u6587\u4ef6\uff0c\u4f7f\u5176\u6210\u4e3a\u4e00\u4e2a\u7528\u4e8e\u6b63\u5e38\u5de5\u4f5c\u7684\u5bfc\u5165\u7684\u5305\uff0c\u5b83\u5c06\u5305\u542b\u4e00\u4e2a\u7528\u4e8e\u521b\u5efaFlask\u5e94\u7528\u7a0b\u5e8f\u5b9e\u4f8b\u7684\u51fd\u6570\u3002<\/p>\n<p>\u5e94\u7528\u76ee\u5f55\u4e2d\u5c06\u5305\u542b\u4e00\u4e2aextensions.py\u6587\u4ef6\u6765\u7ba1\u7406\u60a8\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u7684Flask\u6269\u5c55\uff08\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u4f7f\u7528Flask-SQLAlchemy\u4f5c\u4e3a\u4f7f\u7528Flask\u6269\u5c55\u7684\u793a\u4f8b\uff09\u3002\u60a8\u8fd8\u5c06\u62e5\u6709\u4ee5\u4e0b\u76ee\u5f55\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>main: \u4e3b\u8981\u84dd\u56fe\uff0c\u7528\u4e8e\u4e3b\u9875\u7b49\u4e3b\u8981\u8def\u7531\u3002<\/li>\n<li>posts: \u6587\u7ae0\u84dd\u56fe\uff0c\u7528\u4e8e\u7ba1\u7406\u535a\u5ba2\u6587\u7ae0\u3002<\/li>\n<li>questions: \u95ee\u9898\u84dd\u56fe\uff0c\u7528\u4e8e\u5904\u7406\u95ee\u9898\u548c\u7b54\u6848\u3002<\/li>\n<li>models: \u5c06\u5305\u542bFlask-SQLAlchemy\u6a21\u578b\u7684\u76ee\u5f55\u3002<\/li>\n<li>templates: \u6a21\u677f\u76ee\u5f55\uff0c\u5c06\u5305\u542b\u4e3b\u8981\u84dd\u56fe\u7684\u6587\u4ef6\u4ee5\u53ca\u6bcf\u4e2a\u84dd\u56fe\u7684\u76ee\u5f55\u3002<\/li>\n<\/ul>\n<h2>\u7b2c\u4e00\u6b65 &#8211; \u5b89\u88c5Flask\u548cFlask-SQLAlchemy<\/h2>\n<p>\u5728\u8fd9\u4e00\u6b65\u4e2d\uff0c\u60a8\u5c06\u5b89\u88c5\u6240\u9700\u7684\u5e94\u7528\u7a0b\u5e8f\u5305\u3002<\/p>\n<p>\u5728\u4f60\u7684flask_app\u76ee\u5f55\u4e2d\uff0c\u6fc0\u6d3b\u4f60\u7684\u865a\u62df\u73af\u5883\u3002<\/p>\n<pre class=\"post-pre\"><code>source my_env \/bin\/activate<\/code><\/pre>\n<p>\u5728\u60a8\u7684\u865a\u62df\u73af\u5883\u4e2d\u6fc0\u6d3b\u540e\uff0c\u4f7f\u7528pip\u5b89\u88c5Flask\u548cFlask-SQLAlchemy\u3002<\/p>\n<pre class=\"post-pre\"><code>pip install Flask Flask-SQLAlchemy<\/code><\/pre>\n<p>\u4e00\u65e6\u5b89\u88c5\u5b8c\u6210\uff0c\u8f93\u51fa\u5c06\u6253\u5370\u7c7b\u4f3c\u4ee5\u4e0b\u5185\u5bb9\u7684\u884c\uff1a<\/p>\n<pre class=\"post-pre\"><code>\u8f93\u51fa<\/code><\/pre>\n<p>Successfully installed Flask-2.1.2 Flask-SQLAlchemy-2.5.1 Jinja2-3.1.2 MarkupSafe-2.1.1 SQLAlchemy-1.4.39 Werkzeug-2.1.2 click-8.1.3 greenlet-1.1.2 itsdangerous-2.1.2<\/p>\n<p>\u5728\u5b89\u88c5\u4e86\u6240\u9700\u7684Python\u5305\u4e4b\u540e\uff0c\u60a8\u5c06\u5728\u4e0b\u4e00\u6b65\u4e2d\u8bbe\u7f6e\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6\u6765\u7ba1\u7406\u60a8\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u7684\u8bbe\u7f6e\u3002<\/p>\n<h2>\u6b65\u9aa42 \u2014 \u521b\u5efa\u914d\u7f6e\u6587\u4ef6<\/h2>\n<p>\u5728\u8fd9\u4e00\u6b65\u4e2d\uff0c\u60a8\u5c06\u4e3a\u60a8\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u521b\u5efa\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6\uff0c\u5c06\u5e94\u7528\u7a0b\u5e8f\u8bbe\u7f6e\u4e0e\u5e94\u7528\u7a0b\u5e8f\u7684\u5176\u4f59\u90e8\u5206\u5206\u79bb\uff0c\u4f7f\u66f4\u6539\u8bbe\u7f6e\u66f4\u52a0\u5bb9\u6613\u3002\u914d\u7f6e\u6587\u4ef6\u5c06\u914d\u7f6e\u8bf8\u5982\u5bc6\u94a5\u3001SQLAlchemy\u6570\u636e\u5e93URI\u7b49\u5185\u5bb9\u3002<\/p>\n<p>\u5728\u4f60\u7684flask_app\u76ee\u5f55\u4e2d\uff0c\u6253\u5f00\u4e00\u4e2a\u540d\u4e3aconfig.py\u7684\u65b0\u6587\u4ef6\u3002\u8fd9\u4e2a\u6587\u4ef6\u5c06\u4fdd\u5b58\u4f60\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u7684\u914d\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code>nano config.py<\/code><\/pre>\n<p>\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u5176\u4e2d\uff1a<\/p>\n<div>flask_app\/config.py \u7684\u914d\u7f6e\u6587\u4ef6<\/div>\n<pre class=\"post-pre\"><code>import os\r\n\r\nbasedir = os.path.abspath(os.path.dirname(__file__))\r\n\r\n\r\nclass Config:\r\n    SECRET_KEY = os.environ.get('SECRET_KEY')\r\n    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URI')\\\r\n        or 'sqlite:\/\/\/' + os.path.join(basedir, 'app.db')\r\n    SQLALCHEMY_TRACK_MODIFICATIONS = False\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u4f60\u9700\u8981\u5bfc\u5165os\u6a21\u5757\u6765\u8bbf\u95ee\u4f60\u7684\u6587\u4ef6\u7cfb\u7edf\u3002\u4f60\u4f7f\u7528os\u6a21\u5757\u6765\u901a\u8fc7os.path.abspath(os.path.dirname(__file__))\u6765\u5efa\u7acb\u57fa\u7840\u76ee\u5f55\uff0c\u4ee5\u6b63\u786e\u8bbe\u5b9a\u6570\u636e\u5e93\u6587\u4ef6\u7684\u8def\u5f84\u3002<\/p>\n<p>\u4f60\u4f7f\u7528\u4e00\u4e2a\u540d\u4e3aConfig\u7684\u7c7b\uff0c\u5e76\u4f7f\u7528\u7c7b\u53d8\u91cf\u8bbe\u7f6e\u914d\u7f6e\u503c\u3002\u5728\u8fd9\u91cc\uff0c\u4f60\u9700\u8981\u8bbe\u7f6e\u4e09\u4e2a\u914d\u7f6e\u9879\u3002<\/p>\n<ul class=\"post-ul\">\n<li><strong>SECRET_KEY<\/strong>\uff1aFlask\u7528\u4f5c\u5bc6\u94a5\u7684\u957f\u968f\u673a\u5b57\u7b26\u4e32\uff0c\u7528\u4e8e\u4fdd\u62a4\u4f1a\u8bdd\uff08session\uff09\u4e2d\u4ece\u4e00\u4e2a\u8bf7\u6c42\u5230\u53e6\u4e00\u4e2a\u8bf7\u6c42\u4e4b\u95f4\u4fdd\u5b58\u7684\u4fe1\u606f\u3002\u7528\u6237\u53ef\u4ee5\u8bbf\u95ee\u5b58\u50a8\u5728\u4f1a\u8bdd\u4e2d\u7684\u4fe1\u606f\uff0c\u4f46\u9664\u975e\u4ed6\u4eec\u62e5\u6709\u5bc6\u94a5\uff0c\u5426\u5219\u65e0\u6cd5\u4fee\u6539\u5b83\uff0c\u56e0\u6b64\u4f60\u7edd\u4e0d\u80fd\u8ba9\u4efb\u4f55\u4eba\u8bbf\u95ee\u4f60\u7684\u5bc6\u94a5\u3002\u6709\u5173\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605Flask\u6587\u6863\u4e2d\u5173\u4e8e\u4f1a\u8bdd\u7684\u90e8\u5206\u3002\u5176\u4ed6Flask\u6269\u5c55\u901a\u5e38\u4e5f\u4f7f\u7528\u8fd9\u4e2a\u5bc6\u94a5\u6765\u4fdd\u62a4\u6570\u636e\u3002\u6709\u5173\u5982\u4f55\u521b\u5efa\u5b89\u5168\u5bc6\u94a5\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u300a\u5982\u4f55\u5728Flask\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528Web\u8868\u5355\u300b\u7684\u6b65\u9aa43\u3002\u5728\u5f00\u53d1Flask\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u4f60\u5e94\u8be5\u4f7f\u7528\u540d\u4e3aSECRET_KEY\u7684\u73af\u5883\u53d8\u91cf\u6765\u8bbe\u7f6e\u5bc6\u94a5\u3002\u8981\u5728\u8fd9\u4e2aconfig.py\u6587\u4ef6\u4e2d\u83b7\u53d6\u5176\u503c\u5e76\u5c06\u5176\u4fdd\u5b58\u5728\u540d\u4e3aSECRET_KEY\u7684\u7c7b\u53d8\u91cf\u4e2d\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7os.environ\u5bf9\u8c61\u7684get()\u65b9\u6cd5\u8bbf\u95ee\u73af\u5883\u53d8\u91cf\u7684\u503c\u3002\uff08\u867d\u7136\u6309\u7167\u672c\u6559\u7a0b\u4f60\u4e0d\u9700\u8981\u8bbe\u7f6e\u5bc6\u94a5\uff0c\u4f46\u4f60\u53ef\u4ee5\u67e5\u770b\u672c\u5217\u8868\u672b\u5c3e\u7684\u6ce8\u91ca\uff0c\u4e86\u89e3\u5982\u4f55\u8bbe\u7f6e\u5bc6\u94a5\u7684\u8bf4\u660e\u3002\uff09<\/li>\n<li><strong>SQLALCHEMY_DATABASE_URI<\/strong>\uff1a\u6570\u636e\u5e93URI\u6307\u5b9a\u4e86\u4f60\u60f3\u4f7f\u7528SQLAlchemy\u5efa\u7acb\u8fde\u63a5\u7684\u6570\u636e\u5e93\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4f60\u53ef\u4ee5\u4eceDATABASE_URI\u73af\u5883\u53d8\u91cf\u83b7\u53d6\u5b83\uff0c\u6216\u8005\u8bbe\u7f6e\u4e00\u4e2a\u9ed8\u8ba4\u503c\u3002\u8fd9\u91cc\u7684\u9ed8\u8ba4URI\u503c\u9075\u5faasqlite:\/\/\/path\/to\/app.db\u7684\u683c\u5f0f\u3002\u4f60\u4f7f\u7528os.path.join()\u51fd\u6570\u5c06\u4f60\u6784\u5efa\u5e76\u5b58\u50a8\u5728basedir\u53d8\u91cf\u4e2d\u7684\u57fa\u7840\u76ee\u5f55\u548capp.db\u6587\u4ef6\u540d\u8fde\u63a5\u8d77\u6765\u3002\u6709\u4e86\u8fd9\u4e2a\uff0c\u521b\u5efaFlask\u5e94\u7528\u7a0b\u5e8f\u800c\u4e0d\u8bbe\u7f6eDATABASE_URI\u73af\u5883\u53d8\u91cf\u5c06\u9ed8\u8ba4\u8fde\u63a5\u5230flask_app\u76ee\u5f55\u4e2d\u7684app.db\u6570\u636e\u5e93\u6587\u4ef6\u3002\u8be5\u6587\u4ef6\u5c06\u5728\u4f60\u521b\u5efa\u6570\u636e\u5e93\u8868\u65f6\u521b\u5efa\u3002\u5982\u679c\u4f60\u60f3\u4e3a\u4e0d\u540c\u7684SQL\u5f15\u64ce\u8bbe\u7f6e\u6570\u636e\u5e93URI\uff0c\u8bf7\u53c2\u9605\u300a\u5982\u4f55\u5728Flask\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528Flask-SQLAlchemy\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u300b\u7684\u6b65\u9aa42\u3002<\/li>\n<li><strong>SQLALCHEMY_TRACK_MODIFICATIONS<\/strong>\uff1a\u7528\u4e8e\u542f\u7528\u6216\u7981\u7528\u5bf9\u8c61\u4fee\u6539\u8ddf\u8e2a\u7684\u914d\u7f6e\u3002\u4f60\u5c06\u5176\u8bbe\u7f6e\u4e3aFalse\u4ee5\u7981\u7528\u8ddf\u8e2a\u5e76\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\u3002\u66f4\u591a\u4fe1\u606f\uff0c\u4f60\u53ef\u4ee5\u9605\u8bfbFlask-SQLAlchemy\u6587\u6863\u4e2d\u7684\u914d\u7f6e\u9875\u9762\u3002<\/li>\n<\/ul>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\">\u6ce8\u610f\uff1a\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u60a8\u4e0d\u9700\u8981\u8bbe\u7f6e\u4e00\u4e2a\u79d8\u5bc6\u5bc6\u94a5\uff0c\u56e0\u4e3a\u60a8\u4e0d\u4f1a\u4f7f\u7528\u9700\u8981\u79d8\u5bc6\u5bc6\u94a5\u7684\u529f\u80fd\u3002\u4f46\u662f\uff0c\u5982\u679c\u60a8\u9700\u8981\u8bbe\u7f6e\u4e00\u4e2a\u79d8\u5bc6\u5bc6\u94a5\uff0c\u60a8\u53ef\u4ee5\u6309\u4ee5\u4e0b\u65b9\u5f0f\u8bbe\u7f6e\u5b83\uff08\u5728Windows\u4e0a\u4f7f\u7528set\u800c\u4e0d\u662fexport\uff09\uff1a<\/p>\n<pre class=\"post-pre\"><code>set SECRET_KEY=\"your secret key\"<\/code><\/pre>\n<p>\u540c\u6837\uff0c\u60a8\u53ef\u4ee5\u6309\u4ee5\u4e0b\u65b9\u5f0f\u8bbe\u7f6e\u6570\u636e\u5e93URI\uff08\u5728Windows\u4e0a\u4f7f\u7528set\uff09\uff1a<\/p>\n<pre class=\"post-pre\"><code>set DATABASE_URI=\"postgresql:\/\/username:password@host:port\/database_name\"<\/code><\/pre>\n<\/div>\n<p>\u4f60\u73b0\u5728\u5df2\u7ecf\u4e3a\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u8bbe\u7f6e\u4e86\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6\u3002\u63a5\u4e0b\u6765\uff0c\u4f60\u5c06\u8bbe\u7f6e\u4e00\u4e2aFlask\u5e94\u7528\u7a0b\u5e8f\u5b9e\u4f8b\uff0c\u5e76\u521b\u5efa\u4e00\u4e9b\u4ee3\u8868Flask\u5e94\u7528\u7a0b\u5e8f\u4e0d\u540c\u7ec4\u4ef6\u7684\u84dd\u56fe\u3002<\/p>\n<h2>\u6b65\u9aa4 3 \u2014 \u521b\u5efa\u4e00\u4e2a Flask \u5e94\u7528\u5de5\u5382<\/h2>\n<p>\u5728\u8fd9\u4e2a\u6b65\u9aa4\u4e2d\uff0c\u60a8\u5c06\u521b\u5efa\u4e00\u4e2aFlask\u5e94\u7528\u5de5\u5382\uff0c\u8fd9\u662f\u4e00\u4e2a\u8bbe\u7f6eFlask\u5e94\u7528\u5b9e\u4f8b\u7684Python\u51fd\u6570\u3002<\/p>\n<p>\u5728\u6559\u7a0b\u7684\u8fd9\u4e2a\u9636\u6bb5\uff0c\u4f60\u7684flask_app\u76ee\u5f55\u7ed3\u6784\u5982\u4e0b\uff08\u4e0d\u5305\u62ec\u865a\u62df\u73af\u5883\u7684\u76ee\u5f55\uff09\uff1a<\/p>\n<pre class=\"post-pre\"><code>.\r\n\u251c\u2500\u2500 flask_app\r\n   \u2514\u2500\u2500 config.py\r\n<\/code><\/pre>\n<p>\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u7684\u6838\u5fc3\u4ee3\u7801\u5c06\u5b58\u5728\u4e8e\u4e00\u4e2a\u9879\u76ee\u76ee\u5f55\u4e2d\uff0c\u8be5\u76ee\u5f55\u5c06\u662f\u4e00\u4e2aPython\u5305\u3002\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u5b83\u79f0\u4e3aapp\uff0c\u4f46\u4f60\u53ef\u4ee5\u4f7f\u7528\u4f60\u7684\u9879\u76ee\u540d\u79f0\u6216\u5176\u4ed6\u5e38\u7528\u76ee\u5f55\u540d\u79f0\uff0c\u6bd4\u5982src\u3001core\u6216\u7c7b\u4f3c\u7684\u540d\u79f0\u3002<\/p>\n<p>\u4f60\u9700\u8981\u5c06\u5305\u542b\u5e94\u7528\u7a0b\u5e8f\u6838\u5fc3\u4ee3\u7801\u7684\u6587\u4ef6\u5939\u53d8\u6210\u4e00\u4e2aPython\u5305\uff0c\u4ee5\u4fbf\u5728\u6574\u4e2a\u4ee3\u7801\u5e93\u4e2d\u6b63\u786e\u5730\u8fdb\u884c\u5bfc\u5165\uff0c\u4ece\u800c\u63d0\u9ad8\u5176\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<p>\u4e3a\u4e86\u5c06\u5e94\u7528\u7a0b\u5e8f\u9879\u76ee\u76ee\u5f55\u53d8\u6210Python\u5305\uff0c\u60a8\u9700\u8981\u5728\u5176\u4e2d\u521b\u5efa\u4e00\u4e2a\u7279\u6b8a\u7684__init__.py\u6587\u4ef6\uff0c\u5c06\u76ee\u5f55\u6807\u8bb0\u4e3aPython\u5305\u3002\u8fd9\u4e2a__init__.py\u6587\u4ef6\u5c06\u5305\u542b\u7528\u4e8eFlask\u5de5\u5382\u51fd\u6570\u7684\u4ee3\u7801\uff0c\u8be5\u51fd\u6570\u662f\u4e00\u4e2a\u60a8\u7528\u6765\u8bbe\u7f6e\u548c\u521b\u5efaFlask\u5e94\u7528\u7a0b\u5e8f\u5b9e\u4f8b\u7684\u51fd\u6570\uff0c\u5728\u8be5\u51fd\u6570\u4e2d\u60a8\u5c06\u8fde\u63a5\u6240\u6709\u7684Flask\u84dd\u56fe\u3002\u5c06\u5de5\u5382\u51fd\u6570\u89c6\u4e3a\u4e00\u4e2a\u4e2d\u5fc3\u51fd\u6570\uff0c\u60a8\u53ef\u4ee5\u5728\u5176\u4e2d\u5c06\u6240\u6709\u7684Flask\u7ec4\u4ef6\uff08\u84dd\u56fe\uff09\u7ec4\u5408\u6210\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\uff0c\u5e76\u53ef\u4ee5\u7528\u5b83\u6765\u521b\u5efa\u4e0d\u540c\u76ee\u7684\u548c\u4e0d\u540c\u914d\u7f6e\u7684\u4e0d\u540cFlask\u5e94\u7528\u7a0b\u5e8f\u5b9e\u4f8b\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5de5\u5382\u51fd\u6570\u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u6d4b\u8bd5\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u5b9e\u4f8b\uff0c\u5e76\u4e3a\u6d4b\u8bd5\u914d\u7f6e\u5408\u9002\u7684\u914d\u7f6e\u3002<\/p>\n<p>\u5728\u4f60\u7684 flask_app \u76ee\u5f55\u4e2d\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a app \u7684\u65b0\u76ee\u5f55\u3002<\/p>\n<pre class=\"post-pre\"><code>mkdir app\r\n<\/code><\/pre>\n<p>\u7136\u540e\u5728app\u76ee\u5f55\u4e0b\u6253\u5f00\u4e00\u4e2a\u65b0\u7684__init__.py\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/__init__.py\r\n<\/code><\/pre>\n<p>\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u5176\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code>from flask import Flask\r\n\r\nfrom config import Config\r\n\r\ndef create_app(config_class=Config):\r\n    app = Flask(__name__)\r\n    app.config.from_object(config_class)\r\n\r\n    # Initialize Flask extensions here\r\n\r\n    # Register blueprints here\r\n\r\n    @app.route('\/test\/')\r\n    def test_page():\r\n        return '&lt;h1&gt;Testing the Flask Application Factory Pattern&lt;\/h1&gt;'\r\n\r\n    return app\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u8fd9\u4e2a\u6587\u4ef6\u4e2d\uff0c\u4f60\u4eceflask\u5305\u4e2d\u5bfc\u5165\u4e86Flask\u7c7b\u3002\u7136\u540e\u4f60\u4ece\u524d\u4e00\u6b65\u9aa4\u4e2d\u5728flask_app\u76ee\u5f55\u4e2d\u521b\u5efa\u7684config.py\u6587\u4ef6\u4e2d\u5bfc\u5165\u4e86Config\u914d\u7f6e\u7c7b\u3002<\/p>\n<p>create_app()\u51fd\u6570\u662fFlask\u5e94\u7528\u5de5\u5382\u51fd\u6570\u3002\u5b83\u4f7f\u7528Flask()\u7c7b\u4e2d\u7684app = Flask (__name__)\u4e00\u884c\u6765\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aapp\u7684\u5e94\u7528\u5b9e\u4f8b\u3002\u901a\u8fc7\u4ece\u4e00\u4e2a\u5bf9\u8c61\u4e2d\u4f7f\u7528app.config.from_object()\u65b9\u6cd5\u5bfc\u5165\u914d\u7f6e\u503c\u6765\u914d\u7f6e\u5e94\u7528\uff0c\u5c06config_class\u53c2\u6570\u7684\u503c\u4f20\u9012\u7ed9\u5b83\uff0cconfig_class\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u4e3aConfig\u7c7b\u3002\u4f60\u53ef\u4ee5\u5728\u4ee5\u4e0b\u7684\u201c# \u5728\u8fd9\u91cc\u521d\u59cb\u5316Flask\u6269\u5c55\u201d\u6ce8\u91ca\u4e0b\u521d\u59cb\u5316\u4f60\u7684Flask\u6269\u5c55\uff0c\u5e76\u5728\u521b\u5efa\u84dd\u56fe\u540e\u5728\u201c# \u5728\u8fd9\u91cc\u6ce8\u518c\u84dd\u56fe\u201d\u6ce8\u91ca\u4e0b\u6ce8\u518c\u4f60\u7684\u5e94\u7528\u84dd\u56fe\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528app.route()\u88c5\u9970\u5668\u5728\u5de5\u5382\u51fd\u6570\u5185\u521b\u5efa\u4e00\u4e2a\u6d4b\u8bd5\u8def\u7531\uff0c\u6765\u6f14\u793a\u5982\u4f55\u5728\u5e94\u7528\u5de5\u5382\u4e2d\u6ce8\u518c\u8def\u7531\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0ctest_page()\u89c6\u56fe\u51fd\u6570\u8fd4\u56de\u7684\u6807\u9898\u4e3a\u201c\u6d4b\u8bd5Flask\u5e94\u7528\u5de5\u5382\u6a21\u5f0f\u201d\u3002<\/p>\n<p>\u6700\u540e\uff0ccreate_app() \u5de5\u5382\u51fd\u6570\u8fd4\u56de\u4f60\u4f7f\u7528 return app \u6784\u5efa\u7684\u5e94\u7528\u7a0b\u5e8f\u5b9e\u4f8b\u3002<\/p>\n<p>Flask\u4f1a\u81ea\u52a8\u68c0\u6d4b\u60a8\u7684app\u5305\u4e2d\u7684create_app()\u5de5\u5382\u51fd\u6570\uff0c\u5e76\u4f7f\u7528\u5b83\u6765\u521b\u5efa\u5e94\u7528\u7a0b\u5e8f\u5b9e\u4f8b\u3002\u4f46\u662f\uff0c\u5728\u5f00\u59cb\u4ee5\u5f00\u53d1\u6a21\u5f0f\u8fd0\u884cFlask\u5e94\u7528\u7a0b\u5e8f\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u5148\u8bbe\u7f6e\u6240\u9700\u7684\u73af\u5883\u53d8\u91cf\u3002<\/p>\n<p>\u5f53\u5728\u4f60\u7684 flask_app \u76ee\u5f55\u4e2d\u5e76\u4e14\u5df2\u7ecf\u6fc0\u6d3b\u4e86\u4f60\u7684\u865a\u62df\u73af\u5883\uff0c\u4f60\u5c06\u901a\u8fc7\u5c06\u6838\u5fc3\u5e94\u7528\u7684\u76ee\u5f55\u540d\u79f0 app \u4f5c\u4e3a\u503c\u4f20\u9012\u7ed9 FLASK_APP \u73af\u5883\u53d8\u91cf\u6765\u544a\u8bc9 Flask \u5de5\u5382\u51fd\u6570\u7684\u4f4d\u7f6e\u3002\u7136\u540e\uff0c\u4f60\u5c06\u628a FLASK_ENV \u73af\u5883\u53d8\u91cf\u8bbe\u7f6e\u4e3a development \u4ee5\u5728\u5f00\u53d1\u6a21\u5f0f\u4e0b\u8fd0\u884c\u5e94\u7528\u7a0b\u5e8f\u5e76\u83b7\u5f97\u8c03\u8bd5\u5668\u7684\u8bbf\u95ee\u6743\u9650\u3002\u6709\u5173 Flask \u8c03\u8bd5\u5668\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\uff1a\u5982\u4f55\u5904\u7406 Flask \u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u9519\u8bef\u3002<\/p>\n<p>\u9996\u5148\uff0c\u5c06\u5e94\u7528\u7a0b\u5e8f\u5305\u8bbe\u7f6e\u4e3aFlask\u5e94\u8be5\u67e5\u627ecreate_app()\u5de5\u5382\u51fd\u6570\u7684\u4f4d\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code>export FLASK_APP = app\r\n<\/code><\/pre>\n<p>\u4f60\u53ef\u80fd\u4e60\u60ef\u4e8e\u5728\u4e00\u4e2a\u540d\u4e3a app.py \u7684\u5355\u4e00 Python \u6587\u4ef6\u4e2d\u6784\u5efa\u4f60\u7684 Flask \u5e94\u7528\u7a0b\u5e8f\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4f60\u4e5f\u4f7f\u7528\u76f8\u540c\u7684\u547d\u4ee4\u544a\u8bc9 Flask \u5e94\u7528\u7a0b\u5e8f\u6240\u5728\u7684\u4f4d\u7f6e\u3002\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u4e0a\u8ff0\u547d\u4ee4\u4e2d\u7684 app \u662f\u9879\u76ee\u7684\u6838\u5fc3\u76ee\u5f55\uff0c\u5728\u90a3\u91cc\u4f60\u6709\u4f60\u7684 __init__.py \u6587\u4ef6\u3002<\/p>\n<p>\u5c06FLASK_ENV\u73af\u5883\u53d8\u91cf\u8bbe\u4e3a\u5f00\u53d1\u6a21\u5f0f\u6765\u8fd0\u884c\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<pre class=\"post-pre\"><code>export FLASK_ENV = development\r\n<\/code><\/pre>\n<p>\u7136\u540e\u8fd0\u884c\u8be5\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<pre class=\"post-pre\"><code>flask run\r\n<\/code><\/pre>\n<p>\u5728\u5f00\u53d1\u670d\u52a1\u5668\u8fd0\u884c\u7684\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528\u6d4f\u89c8\u5668\u8bbf\u95ee\u4ee5\u4e0bURL\u3002<\/p>\n<pre class=\"post-pre\"><code>http:\/\/127.0.0.1:5000\/test\/\r\n<\/code><\/pre>\n<p>\u8be5\u7f51\u7ad9\u5c06\u4f1a\u52a0\u8f7d\u4e00\u4e2a\u6807\u9898\u4e3a\u201c\u6d4b\u8bd5Flask\u5e94\u7528\u7a0b\u5e8f\u5de5\u5382\u6a21\u5f0f\u201d\u7684\u9875\u9762\u3002<\/p>\n<p>\u73b0\u5728\u4f60\u5df2\u7ecf\u521b\u5efa\u4e86\u4e00\u4e2aFlask\u5e94\u7528\u7a0b\u5e8f\u5de5\u5382\u51fd\u6570\u3002\u63a5\u4e0b\u6765\uff0c\u4f60\u5c06\u5728\u8fd9\u4e2a\u5de5\u5382\u51fd\u6570\u4e2d\u521b\u5efaFlask\u84dd\u56fe\u5e76\u6ce8\u518c\u5b83\u4eec\u3002<\/p>\n<h2>\u7b2c\u56db\u6b65 \u2014 \u521b\u5efaFlask\u84dd\u56fe\u5728\u8fd9\u4e00\u6b65\u4e2d\uff0c\u60a8\u5c06\u4e3a\u7ba1\u7406Flask\u5e94\u7528\u7a0b\u5e8f\u7684\u4e3b\u8981\u7ec4\u4ef6\u521b\u5efa\u4e3b\u8981\u8def\u7531\u7684\u84dd\u56fe\uff0c\u7136\u540e\u5728\u5de5\u5382\u51fd\u6570\u4e0a\u6ce8\u518c\u8be5\u84dd\u56fe\u3002\u60a8\u5c06\u4e3a\u535a\u5ba2\u6587\u7ae0\u3001\u95ee\u9898\u548c\u7b54\u6848\u5206\u522b\u521b\u5efa\u53e6\u4e00\u4e2a\u84dd\u56fe\u3002\u60a8\u5c06\u4e3a\u6bcf\u4e2a\u84dd\u56fe\u6dfb\u52a0\u51e0\u4e2a\u8def\u7531\uff0c\u5e76\u4e3a\u6bcf\u4e2a\u8def\u7531\u4f7f\u7528\u6a21\u677f\u76ee\u5f55\u6e32\u67d3\u6a21\u677f\u3002<\/p>\n<p>\u5728\u6559\u7a0b\u7684\u8fd9\u4e00\u70b9\u4e0a\uff0c\u60a8\u7684flask_app\u76ee\u5f55\u7ed3\u6784\u5982\u4e0b\uff08\u4e0d\u5305\u62ec\u865a\u62df\u73af\u5883\u7684\u76ee\u5f55\uff09\uff1a<\/p>\n<pre class=\"post-pre\"><code>.\r\n\u251c\u2500\u2500 flask_app\r\n    \u251c\u2500\u2500 app\r\n    \u2502   \u2514\u2500\u2500 __init__.py\r\n    \u2514\u2500\u2500 config.py\r\n<\/code><\/pre>\n<h3>\u521b\u5efa\u4e3b\u8981\u84dd\u56fe\u5e76\u6e32\u67d3\u5176\u6a21\u677f\u3002\u4f60\u73b0\u5728\u5c06\u4e3a\u5e94\u7528\u7a0b\u5e8f\u521b\u5efa\u4e3b\u8981\u7684\u84dd\u56fe\uff0c\u5e76\u5448\u73b0\u5b83\u7684\u6a21\u677f\u3002<\/p>\n<p>\u4fdd\u6301\u60a8\u5728\u524d\u4e00\u6b65\u4e2d\u542f\u52a8\u7684\u5f00\u53d1\u670d\u52a1\u5668\u8fd0\u884c\uff0c\u5e76\u6253\u5f00\u4e00\u4e2a\u65b0\u7684\u7ec8\u7aef\u3002<\/p>\n<p>\u5728\u65b0\u7ec8\u7aef\u4e2d\u5bfc\u822a\u5230\u60a8\u7684 flask_app \u76ee\u5f55\u3002\u7136\u540e\u5728 app \u76ee\u5f55\u4e2d\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a main \u7684\u76ee\u5f55\uff0c\u7528\u4f5c\u60a8\u7684\u4e3b\u8981\u84dd\u56fe\u3002<\/p>\n<pre class=\"post-pre\"><code>mkdir app\/main\r\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u5728\u65b0\u7684\u4e3b\u6587\u4ef6\u5939\u4e2d\u6253\u5f00\u4e00\u4e2a\u65b0\u7684__init__.py\u4e3b\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/main\/__init__.py\r\n<\/code><\/pre>\n<p>\u8fd9\u662f\u4f60\u521b\u5efa\u4e3b\u8981\u84dd\u56fe\u7684\u5730\u65b9\u3002\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u6b64\u6587\u4ef6\u4e2d\u3002<\/p>\n<div>flask_app\u5e94\u7528\u7a0b\u5e8f\u7684\u4e3b\u8981\u6587\u4ef6\u662f__init__.py\u3002<\/p>\n<pre class=\"post-pre\"><code>from flask import Blueprint\r\n\r\nbp = Blueprint('main', __name__)\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u4f60\u4eceflask\u5305\u4e2d\u5bfc\u5165\u4e86Blueprint\u7c7b\u3002\u7136\u540e\uff0c\u4f60\u4f7f\u7528\u8fd9\u4e2a\u7c7b\u6765\u521b\u5efa\u4e86\u4e00\u4e2a\u84dd\u56fe\u5bf9\u8c61bp\uff0c\u5411\u5b83\u4f20\u5165\u4e86\u4e24\u4e2a\u53c2\u6570\uff1a\u4e00\u4e2a\u540d\u5b57\uff08\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\u4e3a&#8217;main&#8217;\uff09\u548c__name__\u7279\u6b8a\u53d8\u91cf\uff0c\u8be5\u53d8\u91cf\u4fdd\u5b58\u4e86\u5f53\u524dPython\u6a21\u5757\u7684\u540d\u5b57\u3002<\/p>\n<p>\u4f60\u73b0\u5728\u6709\u4e00\u4e2a\u84dd\u56fe\u5bf9\u8c61\uff0c\u7a0d\u540e\u5c06\u6709\u8def\u7531\u548c\u51fd\u6570\u53ef\u4ee5\u63d2\u5165\u5230\u4f60\u4f7f\u7528\u4e4b\u524d\u7f16\u5199\u7684create_app()\u5de5\u5382\u51fd\u6570\u521b\u5efa\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u4e2d\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u4f60\u5c06\u5728\u4e3b\u8981\u7684\u84dd\u56fe\u76ee\u5f55\u4e2d\u521b\u5efa\u4e00\u4e2aroutes.py\u6587\u4ef6\uff0c\u8be5\u6587\u4ef6\u5c06\u4fdd\u5b58\u4e3b\u8981\u84dd\u56fe\u7684\u8def\u7531\u3002\u5728\u4e3b\u8981\u84dd\u56fe\u76ee\u5f55\u4e2d\u6253\u5f00\u4e00\u4e2a\u65b0\u7684routes.py\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/main\/routes.py<\/code><\/pre>\n<p>\u60a8\u5c06\u4f7f\u7528bp\u5bf9\u8c61\u6765\u521b\u5efa\u8def\u7531\u3002\u5728\u65b0\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u8def\u7531\uff1a<\/p>\n<div>\u4e0b\u9762\u662f\u7528\u4e2d\u56fd\u6bcd\u8bed\u7684\u4e00\u79cd\u9009\u9879\u6765\u89e3\u91caflask_app\/app\/main\/routes.py\uff1a<\/p>\n<pre class=\"post-pre\"><code>from app.main import bp\r\n\r\n@bp.route('\/')\r\ndef index():\r\n    return'This is The Main Blueprint'\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u8fd9\u91cc\uff0c\u4f60\u4ece\u4e3b\u84dd\u56fe\u4e2d\u5bfc\u5165\u4e86bp\u84dd\u56fe\u5bf9\u8c61\uff0c\u901a\u8fc7app.main\u8fdb\u884c\u8bbf\u95ee\u3002\u5728\u5bfc\u5165\u8bed\u53e5\u4e2d\uff0capp\u662f\u9879\u76ee\u7684\u5305\uff0cmain\u662f\u4e3b\u84dd\u56fe\u7684\u5305\uff0cbp\u662f\u4f60\u5728\u4e3b\u84dd\u56fe\u7684__init__.py\u6587\u4ef6\u4e2d\u58f0\u660e\u7684\u5bf9\u8c61\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528bp\u5bf9\u8c61\u901a\u8fc7bp.route()\u88c5\u9970\u5668\u6765\u521b\u5efa\u4e00\u4e2a\/\u8def\u7531\u548c\u4e00\u4e2aindex()\u89c6\u56fe\u51fd\u6570\uff0c\u7c7b\u4f3c\u4e8e\u719f\u6089\u7684app.route()\u88c5\u9970\u5668\u3002<\/p>\n<p>\u8981\u8ba9Flask\u4f7f\u7528\u8fd9\u4e9b\u8def\u7531\uff0c\u5e76\u4e14\u53ef\u4ee5\u76f4\u63a5\u4ece\u84dd\u56fe\u4e2d\u5bfc\u5165\u5b83\u4eec\uff0c\u4f60\u9700\u8981\u5728\u84dd\u56fe\u7684__init__.py\u6587\u4ef6\u4e2d\u5bfc\u5165routes.py\u6587\u4ef6\u3002\u6253\u5f00\u5b83\u8fdb\u884c\u7f16\u8f91\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/main\/__init__.py\r\n<\/code><\/pre>\n<p>\u5728\u6587\u4ef6\u672b\u5c3e\u6dfb\u52a0\u7a81\u51fa\u663e\u793a\u7684\u5bfc\u5165\u884c\u3002<\/p>\n<div>\n<p>\u7ffb\u8bd1\uff1aflask_app \/ app \/ main \/ __init__.py<\/p>\n<p>Flask\u5e94\u7528\u7a0b\u5e8f\u7684\u4e3b\u8981\u521d\u59cb\u5316\u6587\u4ef6\u662f__init__.py\u3002<\/p>\n<pre class=\"post-pre\"><code>from flask import Blueprint\r\n\r\nbp = Blueprint('main', __name__)\r\n\r\nfrom app.main import routes\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u901a\u8fc7\u8fd9\u4e2a\u6dfb\u52a0\uff0c\u6ce8\u518c\u4e00\u4e2a\u84dd\u56fe\u4e5f\u4f1a\u6ce8\u518c\u5b83\u7684\u8def\u7531\u3002<\/p>\n<p>\u65e2\u7136\u4f60\u5df2\u7ecf\u521b\u5efa\u4e86\u84dd\u56fe\u5e76\u6dfb\u52a0\u4e86\u8def\u7531\uff0c\u73b0\u5728\u4f60\u9700\u8981\u544a\u8bc9Flask\u8fd9\u4e2a\u65b0\u7684\u84dd\u56fe\uff0c\u4ee5\u4fbf\u5b83\u88ab\u89c6\u4e3a\u4f60\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u7684\u4e00\u90e8\u5206\u3002\u4e3a\u4e86\u505a\u5230\u8fd9\u4e00\u70b9\uff0c\u4f60\u9700\u8981\u5728Flask\u5e94\u7528\u7a0b\u5e8f\u5de5\u5382\u51fd\u6570\u4e2d\u6ce8\u518c\u84dd\u56fe\u3002<\/p>\n<p>\u6253\u5f00app\/__init__.py\u6587\u4ef6\u6765\u7f16\u8f91\u4f60\u7684\u5de5\u5382\u51fd\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/__init__.py<\/code><\/pre>\n<p>\u4fee\u6539create_app()\u5de5\u5382\u51fd\u6570\u4ee5\u5339\u914d\u4ee5\u4e0b\u6a21\u5757\u6dfb\u52a0\u4e0b\u5212\u7ebf\u6807\u8bb0\u7684\u4ee3\u7801\u5757\u3002<\/p>\n<div>flask_app\/app\/main\/__init__.py \u7684\u610f\u601d\u662f flask \u5e94\u7528\u7a0b\u5e8f\u5728\u4e3b\u6587\u4ef6\u5939\u4e2d\u7684\u521d\u59cb\u5316\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>...\r\ndef create_app(config_class=Config):\r\n    app = Flask(__name__)\r\n    app.config.from_object(config_class)\r\n\r\n    # Initialize Flask extensions here\r\n\r\n    # Register blueprints here\r\n    <mark>from app.main import bp as main_bp<\/mark>\r\n    <mark>app.register_blueprint(main_bp)<\/mark>\r\n\r\n    @app.route('\/test\/')\r\n    def test_page():\r\n        return '&lt;h1&gt;Testing the Flask Application Factory Pattern&lt;\/h1&gt;'\r\n\r\n    return app\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u4f60\u4ece\u4e3b\u84dd\u56fe\u4e2d\u5bfc\u5165bp\u84dd\u56fe\u5bf9\u8c61\uff0c\u5e76\u5c06\u5176\u91cd\u547d\u540d\u4e3amain_bp\uff0c\u4ee5\u63d0\u9ad8\u53ef\u8bfb\u6027\u3002\u7136\u540e\uff0c\u4f60\u4f7f\u7528app.register_blueprint()\u65b9\u6cd5\u6765\u6ce8\u518c\u8fd9\u4e2a\u4e3b\u84dd\u56fe\uff0c\u8ba9Flask\u5c06\u5176\u89c6\u4e3a\u5e94\u7528\u7a0b\u5e8f\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<p>\u5728\u5f00\u53d1\u670d\u52a1\u5668\u8fd0\u884c\u65f6\uff0c\u5bfc\u822a\u5230\u4ee5\u4e0b URL\u3002<\/p>\n<pre class=\"post-pre\"><code>http:\/\/127.0.0.1:5000\/\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u9875\u9762\u4f1a\u52a0\u8f7d\u5e26\u6709\u201c\u8fd9\u662f\u4e3b\u8981\u84dd\u56fe\u201d\u8fd9\u6bb5\u6587\u672c\uff0c\u8fd9\u662f\u4f60\u5728\u4e3b\u8def\u5f84\u8fd4\u56de\u7684\u6587\u672c\u3002<\/p>\n<p>\u73b0\u5728\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\u6709\u4e00\u4e2a\u8def\u7531\u7684\u84dd\u56fe\u3002\u63a5\u4e0b\u6765\uff0c\u4f60\u5c06\u7f16\u8f91\u4e3b\u84dd\u56fe\u7684\u4e3b\u8def\u7531\uff0c\u4ee5\u6e32\u67d3\u4e00\u4e2aHTML\u6a21\u677f\uff0c\u8fd9\u5c06\u5c55\u793a\u5728\u4f7f\u7528Flask\u84dd\u56fe\u65f6\u5982\u4f55\u6e32\u67d3\u6a21\u677f\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u6253\u5f00\u4e3b\u84dd\u56fe\u7684routes.py\u6587\u4ef6\u8fdb\u884c\u4fee\u6539\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/main\/routes.py<\/code><\/pre>\n<p>\u7528\u7a81\u51fa\u663e\u793a\u7684\u884c\u7f16\u8f91\u6587\u4ef6<\/p>\n<div>\u5feb\u8dd1\u5e94\u7528\u7a0b\u5e8f\u7684\u4e3b\u8981\u8def\u7531.py<\/p>\n<pre class=\"post-pre\"><code>from flask import render_template<\/mark>\r\nfrom app.main import bp\r\n\r\n@bp.route('\/')\r\ndef index():\r\n    return <mark>render_template('index.html')\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u4f60\u5bfc\u5165\u4e86render_template()\u51fd\u6570\uff0c\u5e76\u5728\u8def\u7531\u4e2d\u4f7f\u7528\u5b83\u6765\u6e32\u67d3\u4e00\u4e2a\u540d\u4e3aindex.html\u7684\u6a21\u677f\u6587\u4ef6\u3002<\/p>\n<p>\u60a8\u73b0\u5728\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u6a21\u677f\u76ee\u5f55\u548c\u4e00\u4e2a\u57fa\u7840\u6a21\u677f\uff0c\u4ee5\u907f\u514d\u4ee3\u7801\u91cd\u590d\uff0c\u5176\u4ed6\u6240\u6709\u6a21\u677f\u90fd\u53ef\u4ee5\u5171\u4eab\u3002<\/p>\n<p>\u5728\u60a8\u7684\u5e94\u7528\u76ee\u5f55\u4e2d\u521b\u5efa\u4e00\u4e2a\u6a21\u677f\u76ee\u5f55\u3002<\/p>\n<pre class=\"post-pre\"><code>mkdir app\/templates<\/code><\/pre>\n<p>\u6253\u5f00\u4e00\u4e2a\u540d\u4e3abase.html\u7684\u65b0\u6587\u4ef6\u4f5c\u4e3a\u57fa\u672c\u6a21\u677f\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/templates\/base.html<\/code><\/pre>\n<p>\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u65b0\u6587\u4ef6\u4e2d\u3002<\/p>\n<div>flask_app\/app\/templates\/base.html \u7684\u4e2d\u6587\u7ffb\u8bd1\u4e0d\u53ef\u7528\u3002<\/p>\n<pre class=\"post-pre\"><code>&lt;!DOCTYPE html&gt;\r\n&lt;html lang=\"en\"&gt;\r\n&lt;head&gt;\r\n    &lt;meta charset=\"UTF-8\"&gt;\r\n    &lt;title&gt;{% block title %} {% endblock %} - FlaskApp&lt;\/title&gt;\r\n    &lt;style&gt;\r\n        h2 {\r\n            width: 100%;\r\n        }\r\n\r\n        .title {\r\n            margin: 5px;\r\n            width: 100%;\r\n        }\r\n\r\n        .content {\r\n            margin: 5px;\r\n            width: 100%;\r\n            display: flex;\r\n            flex-direction: row;\r\n            flex-wrap: wrap;\r\n        }\r\n\r\n        .post {\r\n            flex: 20%;\r\n            padding: 10px;\r\n            margin: 5px;\r\n            background-color: #f3f3f3;\r\n            inline-size: 100%;\r\n        }\r\n\r\n        .title a {\r\n            color: #00a36f;\r\n            text-decoration: none;\r\n        }\r\n\r\n        nav a {\r\n            color: #d64161;\r\n            font-size: 3em;\r\n            margin-left: 50px;\r\n            text-decoration: none;\r\n        }\r\n\r\n    &lt;\/style&gt;\r\n&lt;\/head&gt;\r\n&lt;body&gt;\r\n    &lt;nav&gt;\r\n        &lt;a href=\"{{ url_for('main.index') }}\"&gt;FlaskApp&lt;\/a&gt;\r\n        &lt;a href=\"#\"&gt;Posts&lt;\/a&gt;\r\n        &lt;a href=\"#\"&gt;Categories&lt;\/a&gt;\r\n        &lt;a href=\"#\"&gt;Questions&lt;\/a&gt;\r\n    &lt;\/nav&gt;\r\n    &lt;hr&gt;\r\n    &lt;div class=\"content\"&gt;\r\n        {% block content %} {% endblock %}\r\n    &lt;\/div&gt;\r\n&lt;\/body&gt;\r\n&lt;\/html&gt;\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u8fd9\u4e2a\u57fa\u672c\u6a21\u677f\u5305\u542b\u4e86HTML\u6837\u677f\uff0c\u4f60\u53ef\u4ee5\u5728\u5176\u4ed6\u6a21\u677f\u4e2d\u91cd\u590d\u4f7f\u7528\u3002<\/p>\n<p>\u57fa\u672c\u6a21\u677f\u5305\u62ec\u6807\u9898\u5757\u3001\u4e00\u4e9bCSS\u6837\u5f0f\u3001\u7528\u4e8e\u94fe\u63a5\u5230\u5e94\u7528\u7a0b\u5e8f\u4e0d\u540c\u90e8\u5206\u7684\u5bfc\u822a\u680f\u4ee5\u53ca\u5185\u5bb9\u5757\u3002\u67e5\u770b\u300a\u5728Flask\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5982\u4f55\u4f7f\u7528\u6a21\u677f\u300b\u4ee5\u83b7\u53d6\u66f4\u591a\u5173\u4e8e\u57fa\u672c\u6a21\u677f\u7684\u4fe1\u606f\u3002<\/p>\n<p>\u4f7f\u7528\u8bed\u6cd5 `blueprint_name.view_function_name` \u6765\u5728\u4f7f\u7528 `url_for()` \u51fd\u6570\u4e0e\u84dd\u56fe\u4e00\u8d77\u65f6\u94fe\u63a5\u5230\u4e00\u4e2a\u8def\u7531\u3002\u9996\u9875\u7531\u4e3b\u8981\u84dd\u56fe\u4e2d\u7684 `index()` \u89c6\u56fe\u51fd\u6570\u5904\u7406\uff1b\u56e0\u6b64\uff0c\u4f60\u9700\u8981\u5c06 `main.index` \u4f20\u9012\u7ed9 `url_for()` \u51fd\u6570\u6765\u6784\u5efa\u4e00\u4e2a\u94fe\u63a5\u3002<\/p>\n<p>\u73b0\u5728\uff0c\u5728\u4e3b\u84dd\u56fe\u7684index()\u89c6\u56fe\u51fd\u6570\u4e2d\u521b\u5efa\u60a8\u6e32\u67d3\u7684index.html\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/templates\/index.html<\/code><\/pre>\n<p>\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u65b0\u521b\u5efa\u7684\u6587\u4ef6\u4e2d\u3002<\/p>\n<div>Flask\u5e94\u7528\u7a0b\u5e8f\u7684\u6a21\u677findex.html<\/p>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n\r\n{% block content %}\r\n    {% block title %} The Home Page of FlaskApp {% endblock %}\r\n    \r\n        This is the main Flask blueprint\r\n    \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\u6269\u5c55\u57fa\u7840\u6a21\u677f\u3002\u4f60\u66ff\u6362\u5185\u5bb9\u5757\uff0c\u4f7f\u7528\u4e00\u4e2a\u540c\u65f6\u4f5c\u4e3a\u6807\u9898\u7684<\/p>\n<h1>\u6807\u7b7e\u548c\u4e00\u4e2a<\/p>\n<h2>\u6807\u7b7e\u6765\u8868\u793a\u7d22\u5f15\u9875\u662f\u4e3b\u8981\u7684Flask\u84dd\u56fe\u7684\u4e00\u90e8\u5206\u3002\u5728\u5f00\u542f\u5f00\u53d1\u670d\u52a1\u5668\u7684\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528\u60a8\u7684\u6d4f\u89c8\u5668\u8bbf\u95ee\u9996\u9875\u9875\u9762\uff0c\u6216\u8005\u5982\u679c\u5b83\u5df2\u7ecf\u6253\u5f00\u4e86\uff0c\u8bf7\u5237\u65b0\u5b83\u3002<\/p>\n<pre class=\"post-pre\"><code>http:\/\/127.0.0.1:5000\/\r\n<\/code><\/pre>\n<p>\u4e00\u4e2a\u7c7b\u4f3c\u4e0b\u9762\u56fe\u50cf\u7684\u9875\u9762\u5c06\u52a0\u8f7d\uff1a<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65645b10a4b2f92e6c7229d3\/142-0.png\" alt=\"Main Blueprint\" \/>\u4f60\u73b0\u5728\u5df2\u7ecf\u8bbe\u7f6e\u4e86\u4e00\u4e2a\u84dd\u56fe\uff0c\u5411\u5176routes.py\u6587\u4ef6\u6dfb\u52a0\u4e86\u4e00\u4e2a\u8def\u7531\uff0c\u5e76\u5728\u5e94\u7528\u4e0a\u8fdb\u884c\u4e86\u6ce8\u518c\uff0c\u5e76\u4e3a\u5176\u6e32\u67d3\u4e86\u6a21\u677f\u3002\u63a5\u4e0b\u6765\uff0c\u4f60\u5c06\u521b\u5efa\u53e6\u4e00\u4e2a\u7528\u4e8e\u535a\u5ba2\u6587\u7ae0\u7684\u84dd\u56fe\u3002<\/p>\n<h3>\u521b\u5efa\u5e16\u5b50\u84dd\u56fe\u5e76\u6e32\u67d3\u5176\u6a21\u677f\u3002\u73b0\u5728\u60a8\u5c06\u8981\u521b\u5efa\u535a\u5ba2\u6587\u7ae0\u7684\u84dd\u56fe\uff0c\u5c06\u5176\u6ce8\u518c\u5e76\u6e32\u67d3\u5176\u6a21\u677f\u3002<\/p>\n<p>\u5728\u672c\u5904\u6559\u7a0b\u4e2d\uff0c\u60a8\u7684Flask\u5e94\u7528\u76ee\u5f55\u7ed3\u6784\u5982\u4e0b\uff08\u4e0d\u5305\u62ec\u865a\u62df\u73af\u5883\u7684\u76ee\u5f55\uff09\uff1a<\/p>\n<pre class=\"post-pre\"><code>.\r\n\u251c\u2500\u2500 flask_app\r\n    \u251c\u2500\u2500 app\r\n    \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u251c\u2500\u2500 main\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u2514\u2500\u2500 templates\r\n    \u2502       \u251c\u2500\u2500 base.html\r\n    \u2502       \u2514\u2500\u2500 index.html\r\n    \u2514\u2500\u2500 config.py\r\n<\/code><\/pre>\n<p>\u4e3a\u4e86\u4e3a\u535a\u5ba2\u6587\u7ae0\u521b\u5efa\u65b0\u7684\u84dd\u56fe\uff0c\u4f60\u5c06\u6309\u7167\u524d\u4e00\u8282\u4e2d\u7684\u76f8\u540c\u6b65\u9aa4\u8fdb\u884c\u3002<\/p>\n<p>\u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u201c\u6587\u7ae0\u76ee\u5f55\u201d\u6765\u5b58\u653e\u84dd\u56fe\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>mkdir app\/posts<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u5728\u65b0\u7684posts\u76ee\u5f55\u4e2d\u6253\u5f00\u4e00\u4e2a\u65b0\u7684__init__.py\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/posts\/__init__.py<\/code><\/pre>\n<p>\u521b\u5efa\u4e00\u4e2abp\u84dd\u56fe\u5bf9\u8c61\uff0c\u5e76\u5c06\u8981\u521b\u5efa\u7684\u8def\u7531\u5bfc\u5165\u5230\u84dd\u56fe\u7684routes.py\u6587\u4ef6\u4e2d\u3002<\/p>\n<div>\u8bf7\u7ed9\u6211\u4e00\u4e2a\u9009\u9879 &#8211; flask_app\/app\/posts\/__init__.py \u7684\u4e2d\u6587\u91ca\u4e49\u3002<\/p>\n<pre class=\"post-pre\"><code>from flask import Blueprint\r\n\r\nbp = Blueprint('posts', __name__)\r\n\r\nfrom app.posts import routes\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u5757\u4e2d\uff0c\u60a8\u4f7f\u7528\u4e86\u201cposts\u201d\u4f5c\u4e3a\u84dd\u56fe\u7684\u540d\u79f0\u3002\u60a8\u8fd8\u4ece\u4e00\u4e2a\u5c1a\u672a\u521b\u5efa\u7684routes.py\u6587\u4ef6\u4e2d\u5bfc\u5165\u4e86\u8def\u7531\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6253\u5f00\u65b0\u7684routes.py\u6587\u4ef6\uff0c\u4f60\u5c06\u5728\u8fd9\u91cc\u4e3a\u5e16\u5b50\u84dd\u56fe\u6dfb\u52a0\u8def\u7531\uff1a<\/p>\n<pre class=\"post-pre\"><code>nano app\/posts\/routes.py<\/code><\/pre>\n<p>\u8bf7\u5c06\u4ee5\u4e0b\u8def\u7531\u6dfb\u52a0\u5230\u8fd9\u4e2a\u6587\u4ef6\u4e2d\u3002<\/p>\n<div>flask_app\/app\/posts\/routes.py\u7684\u5185\u5bb9\u3002<\/p>\n<pre class=\"post-pre\"><code>from flask import render_template\r\nfrom app.posts import bp\r\n\r\n@bp.route('\/')\r\ndef index():\r\n    return render_template('posts\/index.html')\r\n\r\n@bp.route('\/categories\/')\r\ndef categories():\r\n    return render_template('posts\/categories.html')\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u4f60\u6709\u4e24\u4e2a\u8def\u5f84\uff1a\u4e00\u4e2a\u662f\u7528\u4e8e\u5e94\u7528\u7a0b\u5e8f\u5e16\u5b50\u7ec4\u4ef6\u7684\u7d22\u5f15\u9875\u9762\u7684\u8def\u5f84\uff0c\u53e6\u4e00\u4e2a\u662f\u7528\u4e8e\u7c7b\u522b\u7684\u8def\u5f84\uff0c\u8fd9\u5c06\u6210\u4e3a\u5e16\u5b50\u7ec4\u4ef6\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<p>\u8fd9\u91cc\u6709\u4e24\u6761\u8def\u5f84\u53ef\u4f9b\u9009\u62e9\uff1a\u4e00\u6761\u662f\u7528\u4e8e\u5e94\u7528\u7a0b\u5e8f\u5e16\u5b50\u7ec4\u4ef6\u7684\u7d22\u5f15\u9875\u9762\u7684\u8def\u5f84\uff0c\u53e6\u4e00\u6761\u662f\u7c7b\u522b\u7684\u8def\u5f84\uff0c\u5c06\u6210\u4e3a\u5e16\u5b50\u7ec4\u4ef6\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<p>\u5728\u7d22\u5f15\u8def\u7531\u4e2d\uff0c\u60a8\u4f7f\u7528\u6a21\u677f\u6587\u4ef6\u8def\u5f84\u4e3a posts\/index.html \u8fdb\u884c\u6e32\u67d3\uff0c\u8fd9\u610f\u5473\u7740 Flask \u5c06\u4f1a\u5728 templates \u76ee\u5f55\u4e2d\u67e5\u627e\u540d\u4e3a posts \u7684\u6587\u4ef6\u5939\uff0c\u7136\u540e\u5728\u8be5\u6587\u4ef6\u5939\u5185\u90e8\u67e5\u627e index.html \u6587\u4ef6\u3002<\/p>\n<p>\u5728\u5206\u7c7b\u8def\u7531\u4e2d\uff0c\u4f60\u4f1a\u6e32\u67d3\u4e00\u4e2acategories.html\u6a21\u677f\uff0c\u8be5\u6a21\u677f\u8fd8\u5c06\u4f4d\u4e8e\u6a21\u677f\u6587\u4ef6\u5939\u5185\u7684\u4e00\u4e2a\u540d\u4e3aposts\u7684\u76ee\u5f55\u4e2d\u3002<\/p>\n<p>\u73b0\u5728\u5728\u4f60\u7684\u6a21\u677f\u76ee\u5f55\u5185\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5e16\u5b50\u76ee\u5f55\u3002<\/p>\n<pre class=\"post-pre\"><code>mkdir app\/templates\/posts<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u5728posts\u76ee\u5f55\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u7684index.html\u6587\u4ef6\u3002\u8fd9\u662f\u4f60\u5728posts\u84dd\u56fe\u7684index()\u89c6\u56fe\u51fd\u6570\u4e2d\u5448\u73b0\u7684\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/templates\/posts\/index.html<\/code><\/pre>\n<p>\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u65b0\u521b\u5efa\u7684\u6587\u4ef6\u4e2d\u3002<\/p>\n<div>\u8bf7\u5c06\u4ee5\u4e0b\u5185\u5bb9\u4ee5\u4e2d\u6587\u672c\u5730\u5316\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e2a\u9009\u9879\uff1a<br \/>\nflask_app\/app\/templates\/posts\/index.html\u7ffb\u8bd1\uff1aFlask\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u6a21\u677f\u6587\u4ef6\u5939\u4e2d\u7684posts\/index.html<\/p>\n<h3>\u4f7f\u7528Flask\u84dd\u56fe\u6784\u5efa\u5927\u578b\u5e94\u7528\u7a0b\u5e8f\uff08\u7b2c5\u90e8\u5206\uff09<\/h3>\n<p>\u8fd9\u662f\u6587\u7ae0\u300a\u5982\u4f55\u4f7f\u7528Flask\u84dd\u56fe\u548cFlask-SQLAlchemy\u6784\u5efa\u4e00\u4e2a\u5927\u578b\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u300b\u7684\u7b2c5\u90e8\u5206\uff08\u517110\u90e8\u5206\uff09\u3002<\/p>\n<p>\u9996\u5148\uff0c\u521b\u5efa\u5e16\u5b50\u9875\u9762\u7684\u6a21\u677f\u6587\u4ef6\uff1a<\/p>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n\r\n{% block content %}\r\n    {% block title %} \u5e16\u5b50\u9875\u9762 {% endblock %}\r\n    \r\n        \u8fd9\u662fFlask\u5e16\u5b50\u84dd\u56fe\r\n    \r\n{% endblock %}\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u60a8\u6269\u5c55\u4e86\u57fa\u672c\u6a21\u677f\u3002\u60a8\u8fd8\u8bbe\u7f6e\u4e86\u4e00\u4e2a\u6807\u9898\uff0c\u5c06\u9875\u9762\u6807\u8bb0\u4e3a\u5e16\u5b50\u6a21\u677f\u7684\u4e00\u90e8\u5206\u3002\u63a5\u4e0b\u6765\uff0c\u5728posts\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a\u65b0\u7684categories.html\u6587\u4ef6\u3002\u8fd9\u5c31\u662f\u4f60\u5728posts\u84dd\u56fe\u7684categories()\u89c6\u56fe\u51fd\u6570\u4e2d\u6e32\u67d3\u7684\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/templates\/posts\/categories.html<\/code><\/pre>\n<p>\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u65b0\u521b\u5efa\u7684\u6587\u4ef6\u4e2d\uff1a<\/p>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n\r\n{% block content %}\r\n    {% block title %} \u5206\u7c7b\u9875\u9762 {% endblock %}\r\n    \r\n        \u8fd9\u662f\u5e16\u5b50\u84dd\u56fe\u4e2d\u7684\u5206\u7c7b\u9875\u9762\r\n    \r\n{% endblock %}\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u6269\u5c55\u57fa\u7840\u6a21\u677f\uff0c\u5e76\u5c06\u6807\u9898\u8bbe\u7f6e\u4e3a\u5c06\u9875\u9762\u6807\u8bb0\u4e3a\u5e16\u5b50\u84dd\u56fe\u7684\u4e00\u90e8\u5206\u3002\u4f60\u5df2\u7ecf\u521b\u5efa\u4e86\u5e16\u5b50\u7684\u84dd\u56fe\uff0c\u6dfb\u52a0\u4e86\u8def\u7531\uff0c\u5e76\u521b\u5efa\u4e86\u6e32\u67d3\u7684\u6a21\u677f\u3002\u73b0\u5728\uff0c\u4f60\u9700\u8981\u5728Flask\u7684\u5de5\u5382\u51fd\u6570\u4e2d\u6ce8\u518c\u8fd9\u4e2a\u84dd\u56fe\uff0c\u8ba9Flask\u5c06\u5176\u8bc6\u522b\u4e3a\u5e94\u7528\u7a0b\u5e8f\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<p>\u6253\u5f00app\/__init__.py\u6587\u4ef6\u6765\u7f16\u8f91\u4f60\u7684\u5de5\u5382\u51fd\u6570\uff1a<\/p>\n<pre class=\"post-pre\"><code>nano app\/__init__.py<\/code><\/pre>\n<p>\u901a\u8fc7\u6dfb\u52a0\u9ad8\u4eae\u663e\u793a\u7684\u4ee3\u7801\u884c\u6765\u7f16\u8f91create_app()\u5de5\u5382\u51fd\u6570\uff1a<\/p>\n<pre class=\"post-pre\"><code>def create_app(config_class=Config):\r\n    app = Flask(__name__)\r\n    app.config.from_object(config_class)\r\n\r\n    # \u5728\u8fd9\u91cc\u521d\u59cb\u5316Flask\u6269\u5c55\r\n\r\n    # \u5728\u8fd9\u91cc\u6ce8\u518c\u84dd\u56fe\r\n    from app.main import bp as main_bp\r\n    app.register_blueprint(main_bp)\r\n\r\n    <mark>from app.posts import bp as posts_bp<\/mark>\r\n    <mark>app.register_blueprint(posts_bp, url_prefix='\/posts')<\/mark>\r\n\r\n    @app.route('\/test\/')\r\n    def test_page():\r\n        return '&lt;h1&gt;\u6d4b\u8bd5Flask\u5e94\u7528\u7a0b\u5e8f\u5de5\u5382\u6a21\u5f0f&lt;\/h1&gt;'\r\n\r\n    return app\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u60a8\u4ece\u5e16\u5b50\u84dd\u56fe\u5305\u4e2d\u5bfc\u5165\u4e86bp\u84dd\u56fe\u5bf9\u8c61\uff0c\u5e76\u5c06\u5176\u91cd\u547d\u540d\u4e3aposts_bp\uff0c\u4ee5\u63d0\u9ad8\u53ef\u8bfb\u6027\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528app.register_blueprint()\u65b9\u6cd5\u6ce8\u518cposts_bp\u84dd\u56fe\u5bf9\u8c61\uff0c\u5e76\u4f20\u9012\u7ed9\u5b83\u540d\u4e3a&#8217;\/posts&#8217;\u7684url_prefix\u53c2\u6570\uff0c\u8be5\u53c2\u6570\u5c06\u4e3a\u84dd\u56fe\u7684\u8def\u7531\u6dfb\u52a0\u524d\u7f00\u3002\u4f8b\u5982\uff0cposts\u84dd\u56fe\u7684\u4e3b\u8981\u8def\u7531\u5c06\u901a\u8fc7\/posts\/\u8def\u5f84\u8bbf\u95ee\uff0c\u800c\/categories\u8def\u7531\u5c06\u5728\/posts\/categories\/\u8def\u5f84\u4e0a\u3002<\/p>\n<p>\u5728\u4f60\u7684\u65b0\u7684\u5e16\u5b50\u84dd\u56fe\u6ce8\u518c\u5e76\u4e14\u5f00\u53d1\u670d\u52a1\u5668\u8fd0\u884c\u65f6\uff0c\u4f7f\u7528\u4f60\u7684\u6d4f\u89c8\u5668\u5bfc\u822a\u81f3\u4ee5\u4e0b\u7f51\u5740\uff1a<\/p>\n<pre class=\"post-pre\"><code>http:\/\/127.0.0.1:5000\/posts\/\r\nhttp:\/\/127.0.0.1:5000\/posts\/categories\/\r\n<\/code><\/pre>\n<p>\u5728http:\/\/127.0.0.1:5000\/posts\/\u9875\u9762\u4e0a\u5c06\u663e\u793a&#8221;\u5e16\u5b50\u9875\u9762&#8221;\u6807\u9898\u3002\u5728http:\/\/127.0.0.1:5000\/posts\/categories\/\u9875\u9762\u4e0a\uff0c\u5c06\u663e\u793a&#8221;\u5206\u7c7b\u9875\u9762&#8221;\u6807\u9898\u3002<\/p>\n<p>\u4e3a\u4e86\u4f7f\u5bfc\u822a\u680f\u4e2d\u7684\u5e16\u5b50\u548c\u5206\u7c7b\u94fe\u63a5\u529f\u80fd\u6b63\u5e38\uff0c\u6253\u5f00\u57fa\u672c\u6a21\u677f\u8fdb\u884c\u4fee\u6539\uff1a<\/p>\n<pre class=\"post-pre\"><code>nano app\/templates\/base.html<\/code><\/pre>\n<p>\u4f7f\u7528\u4e0b\u9762\u7684\u4ee3\u7801\u4fee\u6539&lt;nav&gt;\u6807\u7b7e\uff1a<\/p>\n<pre class=\"post-pre\"><code>    &lt;nav&gt;\r\n        &lt;a href=\"{{ url_for('main.index') }}\"&gt;Flask\u5e94\u7528&lt;\/a&gt;\r\n        &lt;a href=\"<mark>{{ url_for('posts.index') }}<\/mark>\"&gt;\u5e16\u5b50&lt;\/a&gt;\r\n        &lt;a href=\"<mark>{{ url_for('posts.categories') }}<\/mark>\"&gt;\u5206\u7c7b&lt;\/a&gt;\r\n        &lt;a href=\"#\"&gt;\u95ee\u9898&lt;\/a&gt;\r\n    &lt;\/nav&gt;\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528url_for(&#8216;posts.index&#8217;)\u51fd\u6570\u8c03\u7528\u6765\u94fe\u63a5\u5230\u5e16\u5b50\u7d22\u5f15\u9875\u9762\uff0c\u4f7f\u7528url_for(&#8216;posts.categories&#8217;)\u6765\u94fe\u63a5\u5230\u5206\u7c7b\u9875\u9762\u3002<\/p>\n<p>\u5237\u65b0\u60a8\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u4efb\u4f55\u9875\u9762\u4ee5\u542f\u7528\u5e16\u5b50\u548c\u7c7b\u522b\u94fe\u63a5\u7684\u529f\u80fd\u3002<\/p>\n<p>\u60a8\u73b0\u5728\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5df2\u7ecf\u6ce8\u518c\u4e86\u4e00\u4e2a\u5e16\u5b50\u7684\u84dd\u56fe\u3002\u63a5\u4e0b\u6765\uff0c\u60a8\u5c06\u6dfb\u52a0\u4e00\u4e2a\u95ee\u9898\u548c\u7b54\u6848\u7684\u84dd\u56fe\u3002<\/p>\n<h3>\u521b\u5efa\u95ee\u9898\u84dd\u56fe\u5e76\u6e32\u67d3\u5176\u6a21\u677f<\/h3>\n<p>\u73b0\u5728\u60a8\u5c06\u521b\u5efa\u95ee\u9898\u84dd\u56fe\uff0c\u6ce8\u518c\u5b83\uff0c\u5e76\u6e32\u67d3\u5176\u6a21\u677f\u3002<\/p>\n<p>\u5728\u6559\u7a0b\u7684\u8fd9\u4e00\u90e8\u5206\u4e2d\uff0c\u4f60\u7684flask_app\u76ee\u5f55\u7ed3\u6784\u5982\u4e0b\u6240\u793a\uff08\u4e0d\u5305\u62ec\u865a\u62df\u73af\u5883\u7684\u76ee\u5f55\uff09\uff1a<\/p>\n<pre class=\"post-pre\"><code>.\r\n\u251c\u2500\u2500 flask_app\r\n    \u251c\u2500\u2500 app\r\n    \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u251c\u2500\u2500 main\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u251c\u2500\u2500 posts\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u2514\u2500\u2500 templates\r\n    \u2502       \u251c\u2500\u2500 base.html\r\n    \u2502       \u251c\u2500\u2500 index.html\r\n    \u2502       \u2514\u2500\u2500 posts\r\n    \u2502           \u251c\u2500\u2500 categories.html\r\n    \u2502           \u2514\u2500\u2500 index.html\r\n    \u2514\u2500\u2500 config.py\r\n<\/code><\/pre>\n<p>\u4e3a\u4e86\u4e3a\u95ee\u9898\u548c\u7b54\u6848\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u84dd\u56fe\uff0c\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u95ee\u9898\u76ee\u5f55\u6765\u4fdd\u5b58\u84dd\u56fe\u6587\u4ef6\uff1a<\/p>\n<pre class=\"post-pre\"><code>mkdir app\/questions<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u5728\u65b0\u7684questions\u76ee\u5f55\u4e2d\u6253\u5f00\u4e00\u4e2a\u65b0\u7684__init__.py\u6587\u4ef6\uff1a<\/p>\n<pre class=\"post-pre\"><code>nano app\/questions\/__init__.py<\/code><\/pre>\n<p>\u5728routes.py\u6587\u4ef6\u4e2d\u521b\u5efa\u4e00\u4e2abp\u84dd\u56fe\u5bf9\u8c61\uff0c\u5e76\u5bfc\u5165\u4e4b\u540e\u8981\u521b\u5efa\u7684\u8def\u7531\uff1a<\/p>\n<pre class=\"post-pre\"><code>from flask import Blueprint\r\n\r\nbp = Blueprint('questions', __name__)\r\n\r\nfrom app.questions import routes\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u524d\u9762\u7684\u4ee3\u7801\u5757\u4e2d\uff0c\u4f60\u4f7f\u7528\u4e86\u95ee\u9898\u4f5c\u4e3a\u84dd\u56fe\u7684\u540d\u79f0\u3002\u4f60\u8fd8\u5bfc\u5165\u4e86\u8def\u7531\u6587\u4ef6\u4e2d\u7684\u8def\u7531\uff0c\u4f46\u4f60\u5c1a\u672a\u521b\u5efa\u8be5\u6587\u4ef6\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6253\u5f00\u65b0\u7684routes.py\u6587\u4ef6\uff0c\u5728\u8fd9\u91cc\u4f60\u5c06\u4e3a\u95ee\u9898\u84dd\u56fe\u8bbe\u7f6e\u8def\u7531\uff1a<\/p>\n<pre class=\"post-pre\"><code>nano app\/questions\/routes.py<\/code><\/pre>\n<p>\u5c06\u4ee5\u4e0b\u8def\u7531\u6dfb\u52a0\u5230\u6b64\u6587\u4ef6\u4e2d\uff1a<\/p>\n<pre class=\"post-pre\"><code>from flask import render_template\r\nfrom app.questions import bp\r\n\r\n@bp.route('\/')\r\ndef index():\r\n    return render_template('questions\/index.html')\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528\u95ee\u9898\u84dd\u56fe\u5bf9\u8c61\u521b\u5efa\u4e00\u4e2a\u8def\u7531\uff0c\u5c06\u4e00\u4e2a\u540d\u4e3aindex.html\u7684\u6a21\u677f\u6587\u4ef6\u6e32\u67d3\u5230\u540d\u4e3aquestions\u7684\u76ee\u5f55\u4e2d\uff0c\u800c\u8fd9\u4e2aquestions\u76ee\u5f55\u5c06\u4f1a\u5728templates\u6587\u4ef6\u5939\u4e2d\u521b\u5efa\u3002<\/p>\n<p>\u5728\u6a21\u677f\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a\u95ee\u9898\u76ee\u5f55\uff0c\u7136\u540e\u5728\u5176\u4e2d\u6253\u5f00\u4e00\u4e2aindex.html\u6587\u4ef6\uff1a<\/p>\n<pre class=\"post-pre\"><code>mkdir app\/templates\/questions\r\n\tnano app\/templates\/questions\/index.html<\/code><\/pre>\n<p>\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u65b0\u6587\u4ef6\u4e2d\uff1a<\/p>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n\r\n{% block content %}\r\n    {% block title %} \u95ee\u9898\u9875\u9762 {% endblock %}\r\n    \r\n        \u8fd9\u662f\u95ee\u9898\u84dd\u56fe\u4e2d\u7684\u9996\u9875\r\n    \r\n{% endblock %}\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n\r\n{% block content %}\r\n    \r\n        {% block title %} Questions {% endblock %}\r\n\r\n        Questions Blueprint\r\n    \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\u9700\u8981\u8bbe\u7f6e\u4e00\u4e2a\u6807\u9898\u548c\u4e00\u4e2a\u526f\u6807\u9898\uff0c\u7c7b\u4f3c\u4e8e\u5176\u4ed6\u84dd\u56fe\u4e2d\u7684\u4ee5\u524d\u7684\u7d22\u5f15\u6a21\u677f\u3002<\/p>\n<p>\u73b0\u5728\u6253\u5f00app\/__init__.py\uff0c\u5728create_app()\u5de5\u5382\u51fd\u6570\u4e2d\u6ce8\u518cquestions\u84dd\u56fe\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/__init__.py<\/code><\/pre>\n<p>\u901a\u8fc7\u6dfb\u52a0\u4e0b\u9762\u7684\u4ee3\u7801\u884c\u6765\u7f16\u8f91create_app()\u5de5\u5382\u51fd\u6570\uff1a<\/p>\n<div>flask_app\/app\/__init__.py\u7684\u4e2d\u6587\u91ca\u4e49\u662f\uff1a\u74f6\u88c5\u5e94\u7528\u7a0b\u5e8f\/app\/__init__.py\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\ndef create_app(config_class=Config):\r\n    app = Flask(__name__)\r\n    app.config.from_object(config_class)\r\n\r\n    # Initialize Flask extensions here\r\n\r\n    # Register blueprints here\r\n    from app.main import bp as main_bp\r\n    app.register_blueprint(main_bp)\r\n\r\n    from app.posts import bp as posts_bp\r\n    app.register_blueprint(posts_bp, url_prefix='\/posts')\r\n\r\n    <mark>from app.questions import bp as questions_bp<\/mark>\r\n    <mark>app.register_blueprint(questions_bp, url_prefix='\/questions')<\/mark>\r\n\r\n    @app.route('\/test\/')\r\n    def test_page():\r\n        return '&lt;h1&gt;Testing the Flask Application Factory Pattern&lt;\/h1&gt;'\r\n\r\n    return app\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u4f60\u5c06\u95ee\u9898\u7684\u84dd\u56fe\u6ce8\u518c\u65b9\u5f0f\u548c\u5e16\u5b50\u7684\u84dd\u56fe\u6ce8\u518c\u65b9\u5f0f\u4e00\u6837\uff0c\u7ed9\u5176\u8def\u7531\u6dfb\u52a0\/questions\u524d\u7f00\u3002<\/p>\n<p>\u5728\u60a8\u7684\u5f00\u53d1\u670d\u52a1\u5668\u8fd0\u884c\u65f6\uff0c\u4f7f\u7528\u60a8\u7684\u6d4f\u89c8\u5668\u5bfc\u822a\u5230\u4ee5\u4e0b\u7f51\u5740\uff1a<\/p>\n<pre class=\"post-pre\"><code>http:\/\/127.0.0.1:5000\/questions\/\r\n<\/code><\/pre>\n<p>\u9875\u9762\u4e0a\u5c06\u663e\u793a\u95ee\u9898\u548c\u95ee\u9898\u84dd\u56fe\u6807\u9898\u3002<\/p>\n<p>\u73b0\u5728\u4f60\u9700\u8981\u8ba9\u95ee\u9898\u94fe\u63a5\u53ef\u7528\u3002\u6253\u5f00\u57fa\u672c\u6a21\u677f\u6765\u7f16\u8f91\u5bfc\u822a\u680f\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/templates\/base.html<\/code><\/pre>\n<p>\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u5185\u5bb9\u4fee\u6539<\/p>\n<nav>\u6807\u7b7e\uff1a<\/p>\n<div>flask_app\/app\/templates\/base.html \u7684\u5185\u5bb9\u8bf7\u7528\u4e2d\u6587\u8fdb\u884c\u91ca\u4e49\u3002<\/p>\n<pre class=\"post-pre\"><code>    &lt;nav&gt;\r\n        &lt;a href=\"{{ url_for('main.index') }}\"&gt;FlaskApp&lt;\/a&gt;\r\n        &lt;a href=\"{{ url_for('posts.index') }}\"&gt;Posts&lt;\/a&gt;\r\n        &lt;a href=\"{{ url_for('posts.categories') }}\"&gt;Categories&lt;\/a&gt;\r\n        &lt;a href=\"<mark>{{ url_for('questions.index') }}<\/mark>\"&gt;Questions&lt;\/a&gt;\r\n    &lt;\/nav&gt;\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u60a8\u4f7f\u7528url_for\uff08&#8217;questions.index&#8217;\uff09\u51fd\u6570\u8c03\u7528\u5c06\u94fe\u63a5\u5230\u95ee\u9898\u7d22\u5f15\u9875\u9762\u3002<\/p>\n<p>\u5728\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5237\u65b0\u4efb\u4f55\u9875\u9762\uff0c\u4ee5\u542f\u7528\u5bfc\u822a\u680f\u4e2d\u7684\u201c\u95ee\u9898\u201d\u94fe\u63a5\u529f\u80fd\u3002<\/p>\n<p>\u60a8\u5df2\u4e3a\u7ba1\u7406\u5e94\u7528\u7a0b\u5e8f\u7684\u4e0d\u540c\u7ec4\u4ef6\u521b\u5efa\u4e86\u51e0\u4e2a\u84dd\u56fe\u3002\u60a8\u5728\u5de5\u5382\u51fd\u6570\u4e2d\u6ce8\u518c\u4e86\u8fd9\u4e9b\u84dd\u56fe\uff0c\u5e76\u4e3a\u6bcf\u4e2a\u8def\u7531\u5448\u73b0\u4e86\u6a21\u677f\u3002\u63a5\u4e0b\u6765\uff0c\u60a8\u5c06\u5728\u60a8\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u4e2d\u6dfb\u52a0Flask-SQLAlchemy\u6765\u7ba1\u7406\u548c\u7ec4\u7ec7\u5e9e\u5927\u7684\u6570\u636e\u5e93\u3002<\/p>\n<h2>\u7b2c\u4e94\u6b65 &#8211; \u5c06Flask-SQLAlchemy\u6a21\u578b\u6dfb\u52a0\u5230\u60a8\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5728\u8fd9\u4e00\u6b65\u4e2d\uff0c\u60a8\u5c06\u4f1a\u5c06Flask-SQLAlchemy\u4e0e\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u96c6\u6210\uff0c\u6dfb\u52a0\u4e00\u4e2a\u6570\u636e\u5e93\u6a21\u578b\u7684\u76ee\u5f55\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u5e16\u5b50\u548c\u95ee\u9898\u7684\u6a21\u578b\u3002\u60a8\u5c06\u5728\u5e16\u5b50\u8868\u4e2d\u63d2\u5165\u4e00\u4e9b\u535a\u6587\uff0c\u7136\u540e\u7f16\u8f91\u5e16\u5b50\u7684\u7d22\u5f15\u8def\u5f84\u4ee5\u663e\u793a\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u5e16\u5b50\u3002\u60a8\u8fd8\u5c06\u5728\u95ee\u9898\u8868\u4e2d\u63d2\u5165\u4e00\u4e9b\u95ee\u9898\u548c\u7b54\u6848\uff0c\u4ee5\u4fbf\u5728\u95ee\u9898\u7684\u7d22\u5f15\u9875\u9762\u4e0a\u663e\u793a\u5b83\u4eec\uff0c\u5e76\u5728\u6570\u636e\u5e93\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u7528\u4e8e\u8fdb\u4e00\u6b65\u6dfb\u52a0\u95ee\u9898\u548c\u7b54\u6848\u7684\u65b0\u7684\u7f51\u7edc\u8868\u5355\u3002<\/p>\n<p>\u5728\u6559\u7a0b\u7684\u8fd9\u4e00\u70b9\u4e0a\uff0c\u60a8\u7684flask_app\u76ee\u5f55\u7ed3\u6784\u5982\u4e0b\uff08\u4e0d\u5305\u62ec\u865a\u62df\u73af\u5883\u7684\u76ee\u5f55\uff09\uff1a<\/p>\n<pre class=\"post-pre\"><code>.\r\n\u251c\u2500\u2500 flask_app\r\n    \u251c\u2500\u2500 app\r\n    \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u251c\u2500\u2500 main\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u251c\u2500\u2500 posts\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u251c\u2500\u2500 questions\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u2514\u2500\u2500 templates\r\n    \u2502       \u251c\u2500\u2500 base.html\r\n    \u2502       \u251c\u2500\u2500 index.html\r\n    \u2502       \u251c\u2500\u2500 posts\r\n    \u2502       \u2502   \u251c\u2500\u2500 categories.html\r\n    \u2502       \u2502   \u2514\u2500\u2500 index.html\r\n    \u2502       \u2514\u2500\u2500 questions\r\n    \u2502           \u2514\u2500\u2500 index.html\r\n    \u2514\u2500\u2500 config.py\r\n<\/code><\/pre>\n<h3>\u521b\u5efa\u4e00\u4e2a\u6587\u4ef6\u6765\u7ba1\u7406Flask\u6269\u5c55\u5e76\u96c6\u6210Flask-SQLAlchemy\u3002\u8981\u5c06Flask-SQLAlchemy\u6269\u5c55\u6dfb\u52a0\u5230\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u9996\u5148\u9700\u8981\u5728\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u76ee\u5f55\u4e0b\u6dfb\u52a0\u4e00\u4e2a\u540d\u4e3aextensions.py\u7684Python\u6a21\u5757\uff0c\u60a8\u5c06\u5728\u5176\u4e2d\u8bbe\u7f6e\u5404\u79cdFlask\u6269\u5c55\u3002<\/p>\n<p>\u5728\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u76ee\u5f55\u4e2d\u6253\u5f00\u4e00\u4e2a\u540d\u4e3aextensions.py\u7684\u65b0\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/extensions.py<\/code><\/pre>\n<p>\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u65b0\u521b\u5efa\u7684\u6587\u4ef6\u4e2d\u3002<\/p>\n<div>\u5f15\u7528\u4ee5\u4e0b\u4ee3\u7801\u5728Chinese\uff0c\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879\uff1a<br \/>\nflask_app\/app\/extensions.py \u2192 Flask\u5e94\u7528\u7a0b\u5e8f\/\u5e94\u7528\u7a0b\u5e8f\/\u6269\u5c55.py<\/p>\n<pre class=\"post-pre\"><code>from flask_sqlalchemy import SQLAlchemy\r\ndb = SQLAlchemy()\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u4f60\u4eceFlask-SQLAlchemy\u5305\u4e2d\u5bfc\u5165SQLAlchemy()\u7c7b\uff0c\u7136\u540e\u4f7f\u7528\u5b83\u6765\u521b\u5efa\u4e00\u4e2a\u6ca1\u6709\u53c2\u6570\u7684db\u6570\u636e\u5e93\u5bf9\u8c61\u3002<\/p>\n<p>\u60a8\u5c06\u4f7f\u7528\u6b64\u6570\u636e\u5e93\u5bf9\u8c61\u5c06SQLAlchemy\u4e0e\u60a8\u5728\u5de5\u5382\u51fd\u6570\u4e2d\u6784\u5efa\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u6574\u5408\u3002\u6253\u5f00\u60a8\u7684app\/__init__.py\u6587\u4ef6\u4ee5\u7f16\u8f91\u5de5\u5382\u51fd\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/__init__.py<\/code><\/pre>\n<p>\u4fee\u6539\u6587\u4ef6\u4ee5\u5bfc\u5165\u5e76\u521d\u59cb\u5316\u6570\u636e\u5e93\u5bf9\u8c61<\/p>\n<div>\u521b\u5efa\u4e00\u4e2aFlask\u5e94\u7528\u7a0b\u5e8f\uff0c\u5728app\u6587\u4ef6\u5939\u7684__init__.py\u6587\u4ef6\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code>from flask import Flask\r\n\r\nfrom config import Config\r\n<mark>from app.extensions import db<\/mark>\r\n\r\ndef create_app(config_class=Config):\r\n    app = Flask(__name__)\r\n    app.config.from_object(config_class)\r\n\r\n    # Initialize Flask extensions here\r\n    <mark>db.init_app(app)<\/mark>\r\n\r\n    # Register blueprints here\r\n    from app.main import bp as main_bp\r\n    app.register_blueprint(main_bp)\r\n\r\n    from app.posts import bp as posts_bp\r\n    app.register_blueprint(posts_bp, url_prefix='\/posts')\r\n\r\n    from app.questions import bp as questions_bp\r\n    app.register_blueprint(questions_bp, url_prefix='\/questions')\r\n\r\n    @app.route('\/test\/')\r\n    def test_page():\r\n        return '&lt;h1&gt;Testing the Flask Application Factory Pattern&lt;\/h1&gt;'\r\n\r\n    return app\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\uff0c\u4f60\u4ece\u4e4b\u524d\u521b\u5efa\u7684app.extensions\u6a21\u5757\u4e2d\u5bfc\u5165\u4e86db\u6570\u636e\u5e93\u5bf9\u8c61\u3002\u5728\u6ce8\u518c\u84dd\u56fe\u4e4b\u524d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528db.init_app()\u65b9\u6cd5\u5c06\u6570\u636e\u5e93\u5bf9\u8c61\u8fde\u63a5\u5230app\u5e94\u7528\u7a0b\u5e8f\u5b9e\u4f8b\u4e2d\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528db\u5bf9\u8c61\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u521b\u5efa\u548c\u64cd\u4f5cFlask-SQLAlchemy\u6a21\u578b\u3002<\/p>\n<p>\u8bf7\u8bb0\u4f4f\uff0c\u60a8\u5df2\u4f7f\u7528flask_app\u76ee\u5f55\u4e0b\u7684config.py\u6587\u4ef6\u4e2d\u7684Config\u5bf9\u8c61\u914d\u7f6e\u4e86Flask-SQLAlchemy\u3002\u60a8\u53ef\u4ee5\u6253\u5f00\u6b64\u6587\u4ef6\u8fdb\u884c\u5feb\u901f\u63d0\u9192\u3002<\/p>\n<pre class=\"post-pre\"><code>nano config.py<\/code><\/pre>\n<div>flask_app\/config.py \u7684\u914d\u7f6e\u6587\u4ef6<\/p>\n<pre class=\"post-pre\"><code>import os\r\n\r\nbasedir = os.path.abspath(os.path.dirname(__file__))\r\n\r\nclass Config:\r\n    SECRET_KEY = os.environ.get('SECRET_KEY')\r\n    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URI')\\\r\n        or 'sqlite:\/\/\/' + os.path.join(basedir, 'app.db')\r\n    SQLALCHEMY_TRACK_MODIFICATIONS = False\r\n<\/code><\/pre>\n<p>\u5982\u679c\u60a8\u6ca1\u6709\u8bbe\u7f6e<code>DATABASE_URI<\/code>\u73af\u5883\u53d8\u91cf\uff0c\u5219<code>db<\/code>\u5bf9\u8c61\u5c06\u9ed8\u8ba4\u8fde\u63a5\u5230\u4e00\u4e2a\u540d\u4e3a<code>app.db<\/code>\u7684SQLite\u6587\u4ef6\uff0c\u8be5\u6587\u4ef6\u5c06\u5728\u60a8\u521b\u5efa\u6570\u636e\u5e93\u8868\u540e\u51fa\u73b0\u5728\u60a8\u7684<code>flask_app<\/code>\u76ee\u5f55\u4e2d\u3002\u67e5\u770b\u5b8c\u6bd5\u540e\u8bf7\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528Flask shell\u6765\u68c0\u67e5\u6570\u636e\u5e93\u662f\u5426\u6b63\u786e\u6ce8\u518c\u3002\u9996\u5148\uff0c\u786e\u4fdd\u4f60\u7684\u865a\u62df\u73af\u5883\u5df2\u7ecf\u6fc0\u6d3b\uff0c\u5e76\u5728flask_app\u76ee\u5f55\u4e2d\u8bbe\u7f6e\u4e86Flask\u73af\u5883\u53d8\u91cf\u3002<\/p>\n<pre class=\"post-pre\"><code>export FLASK_APP=app\r\n\texport FLASK_ENV=development<\/code><\/pre>\n<p>\u6253\u5f00Flask\u7684shell\u3002<\/p>\n<pre class=\"post-pre\"><code>flask shell<\/code><\/pre>\n<p>\u4eceapp.extensions\u6a21\u5757\u5bfc\u5165db\u5bf9\u8c61\uff0c\u7136\u540e\u6253\u5370\u5b83\uff1a<\/p>\n<pre class=\"post-pre\"><code>from app.extensions import db\r\n\tprint(db)<\/code><\/pre>\n<p>\u4f60\u5c06\u4f1a\u6536\u5230\u6570\u636e\u5e93\u7684\u8def\u5f84\uff0c\u7c7b\u4f3c\u4e8e\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<pre class=\"post-pre\"><code>\u8f93\u51fa\r\n&lt;SQLAlchemy engine=sqlite:\/\/\/<mark>your_path_to_flask_app<\/mark>\/app.db&gt;\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u8f93\u51fa\u8868\u793adb\u5bf9\u8c61\u5df2\u7ecf\u6b63\u786e\u6ce8\u518c\u3002\u5982\u679c\u5728Flask shell\u4e2d\u8fd0\u884c\u4ee3\u7801\u51fa\u73b0\u9519\u8bef\uff0c\u8bf7\u786e\u4fdd\u5728\u8fdb\u5165\u4e0b\u4e00\u90e8\u5206\u4e4b\u524d\u5728\u5de5\u5382\u51fd\u6570\u4e2d\u6b63\u786e\u6ce8\u518c\u4e86db\u5bf9\u8c61\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u8f93\u5165exit()\u6765\u9000\u51faFlask shell\u3002<\/p>\n<h3>\u521b\u5efa\u548c\u4e0e\u5e16\u5b50\u6a21\u578b\u8fdb\u884c\u4ea4\u4e92<\/h3>\n<p>\u5728\u5927\u578b\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u60a8\u53ef\u80fd\u4f1a\u6709\u6570\u767e\u4e2a\u6570\u636e\u5e93\u8868\uff0c\u8fd9\u610f\u5473\u7740\u60a8\u9700\u8981\u7f16\u5199\u6570\u767e\u4e2aSQLAlchemy\u6a21\u578b\u6765\u7ba1\u7406\u5b83\u4eec\u3002\u5c06\u6240\u6709\u6a21\u578b\u653e\u5728\u4e00\u4e2a\u6587\u4ef6\u4e2d\u5c06\u4f7f\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u96be\u4ee5\u7ef4\u62a4\uff0c\u56e0\u6b64\u60a8\u5c06\u628a\u6a21\u578b\u5206\u6210\u4e0d\u540c\u7684Python\u6587\u4ef6\u653e\u5728models\u76ee\u5f55\u4e2d\u3002\u6bcf\u4e2a\u6587\u4ef6\u5c06\u4fdd\u5b58\u4e0e\u5e94\u7528\u7a0b\u5e8f\u7279\u5b9a\u90e8\u5206\u76f8\u5173\u7684\u6a21\u578b\u548c\u51fd\u6570\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u5c06\u7528\u4e8e\u7ba1\u7406\u5e16\u5b50\u7684\u6a21\u578b\u548c\u51fd\u6570\u653e\u5728\u540d\u4e3apost.py\u7684\u6587\u4ef6\u4e2d\uff0c\u8be5\u6587\u4ef6\u4f4d\u4e8eapp\u76ee\u5f55\u4e0b\u7684models\u76ee\u5f55\u4e2d\u3002<\/p>\n<p>\u5728\u6559\u7a0b\u7684\u8fd9\u4e00\u70b9\u4e0a\uff0c\u60a8\u7684flask_app\u76ee\u5f55\u7ed3\u6784\u5982\u4e0b\uff08\u4e0d\u5305\u62ec\u865a\u62df\u73af\u5883\u7684\u76ee\u5f55\uff09\uff1a<\/p>\n<pre class=\"post-pre\"><code>.\r\n\u251c\u2500\u2500 flask_app\r\n    \u251c\u2500\u2500 app\r\n    \u2502   \u251c\u2500\u2500 extensions.py\r\n    \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u251c\u2500\u2500 main\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u251c\u2500\u2500 posts\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u251c\u2500\u2500 questions\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u2514\u2500\u2500 templates\r\n    \u2502       \u251c\u2500\u2500 base.html\r\n    \u2502       \u251c\u2500\u2500 index.html\r\n    \u2502       \u251c\u2500\u2500 posts\r\n    \u2502       \u2502   \u251c\u2500\u2500 categories.html\r\n    \u2502       \u2502   \u2514\u2500\u2500 index.html\r\n    \u2502       \u2514\u2500\u2500 questions\r\n    \u2502           \u2514\u2500\u2500 index.html\r\n    \u2514\u2500\u2500 config.py\r\n<\/code><\/pre>\n<p>\u4e3a\u4e86\u5728\u4e00\u4e2a\u5355\u72ec\u7684\u6587\u4ef6\u4e2d\u521b\u5efa\u5e16\u5b50\u7684\u6570\u636e\u5e93\u6a21\u578b\uff0c\u8bf7\u5148\u5728\u4f60\u7684\u5e94\u7528\u76ee\u5f55\u4e2d\u521b\u5efa\u4e00\u4e2a\u540d\u4e3amodels\u7684\u6587\u4ef6\u5939\u3002<\/p>\n<pre class=\"post-pre\"><code>mkdir app\/models<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5728\u4f60\u7684models\u76ee\u5f55\u4e0b\u6253\u5f00\u4e00\u4e2a\u540d\u4e3apost.py\u7684\u65b0\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/models\/post.py<\/code><\/pre>\n<p>\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230\u65b0\u521b\u5efa\u7684\u6587\u4ef6\u4e2d\u3002<\/p>\n<p>Flask\u5e94\u7528\u7a0b\u5e8f\u7684\u6a21\u578b\u6587\u4ef6\u5939\u4e2d\u7684post.py\u3002<\/p>\n<pre class=\"post-pre\"><code>from app.extensions import db\r\n\r\nclass Post(db.Model):\r\n    id = db.Column(db.Integer, primary_key=True)\r\n    title = db.Column(db.String(150))\r\n    content = db.Column(db.Text)\r\n\r\n    def __repr__(self):\r\n        return f'&lt;Post \"{self.title}\"&gt;'\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u4f60\u4eceapp.extensions\u6a21\u5757\u4e2d\u5bfc\u5165db\u6570\u636e\u5e93\u5bf9\u8c61\u3002\u7136\u540e\uff0c\u4f60\u4f7f\u7528db.Model\u7c7b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aPost\u7684Flask-SQLAlchemy\u6570\u636e\u5e93\u6a21\u578b\u3002\u5728\u8fd9\u4e2a\u6a21\u578b\u4e2d\uff0c\u4f60\u6709\u4e00\u4e2aID\u6574\u6570\u5217\u4f5c\u4e3a\u4e3b\u952e\uff08id\uff09\uff0c\u4e00\u4e2a\u7528\u4e8e\u4fdd\u5b58\u5e16\u5b50\u6807\u9898\u7684\u5217\uff08title\uff09\uff0c\u4ee5\u53ca\u4e00\u4e2a\u7528\u4e8e\u5185\u5bb9\u7684\u6587\u672c\u5217\uff08content\uff09\u3002\u4f60\u4f7f\u7528\u7279\u6b8a\u7684__repr__()\u65b9\u6cd5\u4e3a\u6bcf\u4e2a\u5e16\u5b50\u5bf9\u8c61\u63d0\u4f9b\u4e00\u4e2a\u5b57\u7b26\u4e32\u8868\u793a\uff0c\u4f7f\u7528\u5b83\u7684\u6807\u9898\u3002\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u6709\u5173Flask-SQLAlchemy\u7684\u5185\u5bb9\uff0c\u4f60\u53ef\u4ee5\u67e5\u9605\u300a\u5982\u4f55\u4f7f\u7528Flask-SQLAlchemy\u5728Flask\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u300b\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6253\u5f00Flask shell\u6839\u636e\u5e16\u5b50\u6a21\u578b\u521b\u5efa\u5e16\u5b50\u8868\u683c\u3002<\/p>\n<pre class=\"post-pre\"><code>flask shell<\/code><\/pre>\n<p>\u8fd0\u884c\u4ee5\u4e0b\u4ee3\u7801\u4ee5\u521b\u5efa posts \u8868\uff1a<\/p>\n<pre class=\"post-pre\"><code>from app.extensions import db\r\n\tfrom app.models.post import Post\r\n\tdb.create_all()<\/code><\/pre>\n<p>\u4f60\u4eceapp.extensions\u6a21\u5757\u5bfc\u5165\u4e86db\u5bf9\u8c61\uff0c\u4eceapp.models.post\u6a21\u5757\u5bfc\u5165\u4e86Post\u6a21\u578b\u3002\u7136\u540e\u4f60\u4f7f\u7528create_all()\u65b9\u6cd5\u6765\u521b\u5efaposts\u8868\u3002<\/p>\n<p>\u4ee3\u7801\u5e94\u8be5\u5728\u6ca1\u6709\u8f93\u51fa\u7684\u60c5\u51b5\u4e0b\u6267\u884c\u3002\u5982\u679c\u6536\u5230\u9519\u8bef\u4fe1\u606f\uff0c\u8bf7\u68c0\u67e5\u4f60\u7684 app\/extensions.py \u548c app\/models\/post.py \u6587\u4ef6\uff0c\u5e76\u56de\u987e\u5148\u524d\u7684\u6b65\u9aa4\u4ee5\u786e\u4fdd\u4f60\u6309\u7167\u4e66\u9762\u8981\u6c42\u8fdb\u884c\u4e86\u64cd\u4f5c\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\">\u6ce8\u610f\uff1a<\/p>\n<p>\u5982\u679c\u8868\u5df2\u7ecf\u5b58\u5728\uff0cdb.create_all()\u51fd\u6570\u4e0d\u4f1a\u91cd\u65b0\u521b\u5efa\u6216\u66f4\u65b0\u8868\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u60f3\u901a\u8fc7\u6dfb\u52a0\u65b0\u5217\u6765\u4fee\u6539\u6a21\u578b\uff0c\u5e76\u4e14\u8fd0\u884cdb.create_all()\u51fd\u6570\uff0c\u90a3\u4e48\u4f60\u5bf9\u6a21\u578b\u6240\u505a\u7684\u4fee\u6539\u5c06\u4e0d\u4f1a\u5e94\u7528\u5230\u5df2\u7ecf\u5b58\u5728\u4e8e\u6570\u636e\u5e93\u4e2d\u7684\u8868\u3002\u89e3\u51b3\u65b9\u6cd5\u662f\u4f7f\u7528db.drop_all()\u51fd\u6570\u5220\u9664\u6240\u6709\u5df2\u5b58\u5728\u7684\u6570\u636e\u5e93\u8868\uff0c\u7136\u540e\u4f7f\u7528db.create_all()\u51fd\u6570\u91cd\u65b0\u521b\u5efa\u5b83\u4eec\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre class=\"post-pre\"><code>db.drop_all()\r\ndb.create_all()<\/code><\/pre>\n<p>\u8fd9\u4e9b\u547d\u4ee4\u5c06\u5e94\u7528\u4f60\u5bf9\u6a21\u578b\u6240\u505a\u7684\u4fee\u6539\uff0c\u5e76\u5220\u9664\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u73b0\u6709\u6570\u636e\u3002\u5982\u679c\u60f3\u8981\u66f4\u65b0\u6570\u636e\u5e93\u5e76\u4fdd\u7559\u73b0\u6709\u6570\u636e\uff0c\u4f60\u9700\u8981\u4f7f\u7528\u6a21\u5f0f\u8fc1\u79fb\uff0c\u5b83\u5141\u8bb8\u4f60\u4fee\u6539\u8868\u5e76\u4fdd\u7559\u6570\u636e\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528Flask-Migrate\u6269\u5c55\u901a\u8fc7Flask\u547d\u4ee4\u884c\u63a5\u53e3\u6267\u884cSQLAlchemy\u6a21\u5f0f\u8fc1\u79fb\u3002<\/p>\n<\/div>\n<p>\u8fd9\u662f\u6587\u7ae0\u300a\u5982\u4f55\u4f7f\u7528Flask\u84dd\u56fe\u548cFlask-SQLAlchemy\u6784\u5efa\u4e00\u4e2a\u5927\u578b\u7684Flask\u5e94\u7528\u7a0b\u5e8f\u300b\u7684\u7b2c8\u90e8\u5206\uff08\u517110\u90e8\u5206\uff09\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u8fd0\u884c\u4ee5\u4e0b\u4ee3\u7801\u4ee5\u521b\u5efa\u5341\u4e2a\u968f\u673a\u5e16\u5b50\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<ol>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">import random<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\"><\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">for i in range(0, 10):<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">random_num = random.randrange(1, 1000)<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">post = Post(title=f'Post #{random_num}',<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">content=f'Content #{random_num}')<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">db.session.add(post)<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">print(post)<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">print(post.content)<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">print('--')<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">db.session.commit()<\/li>\r\n<\/ol>\r\n<\/code><\/pre>\n<p>\u60a8\u5bfc\u5165\u4e86db\u6570\u636e\u5e93\u5bf9\u8c61\u3001Post\u6570\u636e\u5e93\u6a21\u578b\u548cPython\u7684random\u6a21\u5757\u3002\u60a8\u5c06\u4f7f\u7528\u8fd9\u4e2a\u6a21\u5757\u6765\u751f\u6210\u968f\u673a\u6570\uff0c\u4ece\u800c\u521b\u5efa\u5177\u6709\u4e0d\u540c\u6807\u9898\u548c\u5185\u5bb9\u7684\u793a\u4f8b\u5e16\u5b50\u3002\u60a8\u4f7f\u7528\u4e86\u4e00\u4e2a\u5305\u542brange() Python\u51fd\u6570\u7684for\u5faa\u73af\u6765\u91cd\u590d\u6267\u884c\u4ee3\u7801\u5757\u5341\u6b21\u3002<\/p>\n<p>\u5728for\u5faa\u73af\u4e2d\uff0c\u60a8\u4f7f\u7528random.randrange()\u65b9\u6cd5\u751f\u6210\u4e00\u4e2a\u4ecb\u4e8e1\u548c1000\u4e4b\u95f4\u7684\u968f\u673a\u6574\u6570\uff0c\u5e76\u5c06\u5176\u4fdd\u5b58\u5230\u4e00\u4e2a\u540d\u4e3arandom_num\u7684\u53d8\u91cf\u4e2d\u3002\u7136\u540e\uff0c\u60a8\u4f7f\u7528\u8fd9\u4e2a\u968f\u673a\u6570\u751f\u6210\u4e00\u4e2a\u793a\u4f8b\u7684\u5e16\u5b50\u6807\u9898\u548c\u5185\u5bb9\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u57fa\u4e8ePost\u6a21\u578b\u7684\u5e16\u5b50\u5bf9\u8c61\u3002<\/p>\n<p>\u60a8\u63a5\u7740\u5c06\u5e16\u5b50\u5bf9\u8c61\u6dfb\u52a0\u5230\u6570\u636e\u5e93\u4f1a\u8bdd\u4e2d\uff0c\u6253\u5370\u51fa\u5bf9\u8c61\u672c\u8eab\u53ca\u5176\u5185\u5bb9\uff0c\u5e76\u63d0\u4ea4\u4e8b\u52a1\u3002<\/p>\n<p>\u60a8\u5c06\u4f1a\u6536\u5230\u4e00\u4e2a\u7c7b\u4f3c\u4ee5\u4e0b\u7684\u8f93\u51fa\uff0c\u4f46\u662f\u6570\u5b57\u4f1a\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<pre class=\"post-pre\"><code>\u8f93\u51fa\r\n&lt;Post \"Post #58\"&gt; Content #58 -- &lt;Post \"Post #55\"&gt; Content #55 -- &lt;Post \"Post #994\"&gt; Content #994 -- &lt;Post \"Post #394\"&gt; Content #394 -- &lt;Post \"Post #183\"&gt; Content #183 -- &lt;Post \"Post #633\"&gt; Content #633 -- &lt;Post \"Post #790\"&gt; Content #790 -- &lt;Post \"Post #883\"&gt; Content #883 -- &lt;Post \"Post #259\"&gt; Content #259 -- &lt;Post \"Post #581\"&gt; Content #581 --\r\n<\/code><\/pre>\n<p>\u6bcf\u7bc7\u5e16\u5b50\u90fd\u6709\u4e00\u4e2a\u968f\u673a\u751f\u6210\u7684\u7f16\u53f7\u4e0e\u4e4b\u5173\u8054\u3002\u8fd9\u4e9b\u5e16\u5b50\u73b0\u5728\u5c06\u5b58\u50a8\u5728\u60a8\u7684\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n<p>\u4fdd\u6301Flask shell\u7684\u8fd0\u884c\u5e76\u6253\u5f00\u4e00\u4e2a\u65b0\u7684\u7ec8\u7aef\u7a97\u53e3\u3002\u52a0\u8f7d\u60a8\u7684\u73af\u5883\u5e76\u5bfc\u822a\u5230\u60a8\u7684\u5e94\u7528\u6587\u4ef6\u5939\u3002<\/p>\n<p>\u73b0\u5728\u60a8\u7684\u6570\u636e\u5e93\u4e2d\u6709\u4e00\u4e9b\u793a\u4f8b\u5e16\u5b50\uff0c\u60a8\u53ef\u4ee5\u5728\u5e16\u5b50\u7684\u9996\u9875\u4e0a\u5c55\u793a\u5b83\u4eec\u3002\u9996\u5148\uff0c\u6253\u5f00\u5e16\u5b50\u8def\u7531\u6587\u4ef6\u6765\u4fee\u6539\u7d22\u5f15\u8def\u7531\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/posts\/routes.py<\/code><\/pre>\n<p>\u901a\u8fc7\u6dfb\u52a0\u9ad8\u4eae\u7ebf\u6765\u7f16\u8f91\u5bfc\u5165\u9879\u548c\u7d22\u5f15\u8def\u7531\u3002<\/p>\n<div>\n<p>Flask\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u8def\u7531.py\u6587\u4ef6<\/p>\n<pre class=\"post-pre\"><code>from flask import render_template\r\nfrom app.posts import bp\r\n<mark>from app.extensions import db<\/mark>\r\n<mark>from app.models.post import Post<\/mark>\r\n\r\n\r\n@bp.route('\/')\r\ndef index():\r\n    <mark>posts = Post.query.all()<\/mark>\r\n    return render_template('posts\/index.html'<mark>, posts=posts<\/mark>)\r\n<\/code><\/pre>\n<\/div>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u60a8\u5bfc\u5165\u4e86\u6570\u636e\u5e93\u5bf9\u8c61db\u548cPost\u6a21\u578b\u3002\u60a8\u83b7\u53d6\u4e86\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u5e16\u5b50\uff0c\u5e76\u5c06\u5b83\u4eec\u4f20\u9012\u7ed9\u5e16\u5b50\u7d22\u5f15\u6a21\u677f\u3002<\/p>\n<p>\u6253\u5f00\u5e16\u5b50\u7684\u7d22\u5f15\u6a21\u677f\u8fdb\u884c\u4fee\u6539\uff0c\u4ee5\u663e\u793a\u60a8\u4f20\u9012\u7ed9\u5b83\u7684\u5e16\u5b50\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/templates\/posts\/index.html<\/code><\/pre>\n<p>\u901a\u8fc7\u6dfb\u52a0\u9ad8\u4eae\u7684\u884c\u6765\u7f16\u8f91\u6587\u4ef6\u3002<\/p>\n<div>\n<p>Flask\u5e94\u7528\u7a0b\u5e8f\/\u5e94\u7528\/\u6a21\u677f\/\u5e16\u5b50\/\u9996\u9875.html<\/p>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n{% block content %}\r\n    {% block title %} \u5e16\u5b50\u9875\u9762 {% endblock %}\r\n    \r\n        \u8fd9\u662f\u5e16\u5b50\u7684Flask\u84dd\u56fe\r\n        {% for post in posts %}\r\n                #{{ post.id }}\r\n                            {{ post.title }}\r\n                    {{ post.content }}\r\n        {% endfor %}\r\n{% endblock %}\r\n<\/code><\/pre>\n<\/div>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u60a8\u5faa\u73af\u904d\u5386\u5e16\u5b50\u5e76\u663e\u793a\u6bcf\u4e2a\u5e16\u5b50\u7684ID\u3001\u6807\u9898\u548c\u5185\u5bb9\u3002<\/p>\n<p>\u5728\u5f00\u53d1\u670d\u52a1\u5668\u8fd0\u884c\u7684\u60c5\u51b5\u4e0b\uff0c\u8bbf\u95ee\u5e16\u5b50\u7d22\u5f15\u9875\u9762\uff0c\u6216\u8005\u5982\u679c\u60a8\u5df2\u7ecf\u6253\u5f00\u4e86\u6b64\u9875\uff0c\u5219\u5237\u65b0\u5b83\u3002<\/p>\n<pre class=\"post-pre\"><code>http:\/\/127.0.0.1:5000\/posts\/\r\n<\/code><\/pre>\n<p>\u60a8\u751f\u6210\u7684\u793a\u4f8b\u5e16\u5b50\u5c06\u663e\u793a\u5728\u9996\u9875\u4e0a\uff0c\u7c7b\u4f3c\u4e8e\u4e0b\u9762\u7684\u56fe\u7247\uff1a<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65645b10a4b2f92e6c7229d3\/329-0.png\" alt=\"\u5e16\u5b50\u9875\u9762\" \/><\/div>\n<p>\u60a8\u73b0\u5728\u5df2\u7ecf\u6709\u4e86\u4e00\u4e2a\u9488\u5bf9\u5e16\u5b50\u7684\u6570\u636e\u5e93\u6a21\u578b\u3002\u73b0\u5728\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u65b0\u589e\u8def\u7531\u548c\u6a21\u677f\u6765\u4e3a\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u589e\u52a0\u529f\u80fd\uff0c\u6bd4\u5982\u521b\u5efa\u3001\u7f16\u8f91\u548c\u5220\u9664\u5e16\u5b50\u3002<\/p>\n<h3>\u521b\u5efa\u548c\u4e0e\u95ee\u9898\u6a21\u578b\u8fdb\u884c\u4ea4\u4e92<\/h3>\n<p>\u60a8\u5df2\u7ecf\u521b\u5efa\u4e86\u4e00\u4e2a\u5e16\u5b50\u6a21\u578b\uff0c\u5e76\u4e14\u5728\u5e16\u5b50\u84dd\u56fe\u4e2d\u4e0e\u4e4b\u4ea4\u4e92\u3002\u73b0\u5728\uff0c\u60a8\u5c06\u6dfb\u52a0\u95ee\u9898\u6570\u636e\u5e93\u6a21\u578b\u6765\u7ba1\u7406\u95ee\u9898\u548c\u7b54\u6848\u3002<\/p>\n<p>\u5728\u6b64\u6559\u7a0b\u7684\u5f53\u524d\u4f4d\u7f6e\uff0c\u60a8\u7684flask_app\u76ee\u5f55\u7ed3\u6784\u5982\u4e0b\uff08\u4e0d\u5305\u62ec\u865a\u62df\u73af\u5883\u7684\u76ee\u5f55\uff09\uff1a<\/p>\n<pre class=\"post-pre\"><code>.\r\n\u251c\u2500\u2500 flask_app\r\n    \u251c\u2500\u2500 app\r\n    \u2502   \u251c\u2500\u2500 extensions.py\r\n    \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u251c\u2500\u2500 main\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u251c\u2500\u2500 models\r\n    \u2502   \u2502   \u2514\u2500\u2500 post.py\r\n    \u2502   \u251c\u2500\u2500 posts\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u251c\u2500\u2500 questions\r\n    \u2502   \u2502   \u251c\u2500\u2500 __init__.py\r\n    \u2502   \u2502   \u2514\u2500\u2500 routes.py\r\n    \u2502   \u2514\u2500\u2500 templates\r\n    \u2502       \u251c\u2500\u2500 base.html\r\n    \u2502       \u251c\u2500\u2500 index.html\r\n    \u2502       \u251c\u2500\u2500 posts\r\n    \u2502       \u2502   \u251c\u2500\u2500 categories.html\r\n    \u2502       \u2502   \u2514\u2500\u2500 index.html\r\n    \u2502       \u2514\u2500\u2500 questions\r\n    \u2502           \u2514\u2500\u2500 index.html\r\n    \u251c\u2500\u2500 app.db\r\n    \u2514\u2500\u2500 config.py\r\n<\/code><\/pre>\n<p>\u4e3a\u4e86\u521b\u5efa\u4e00\u4e2a\u95ee\u9898\u6570\u636e\u5e93\u6a21\u578b\uff0c\u5728\u60a8\u7684\u6a21\u578b\u76ee\u5f55\u4e2d\u6253\u5f00\u4e00\u4e2a\u540d\u4e3aquestion.py\u7684\u65b0\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>nano app\/models\/question.py<\/code><\/pre>\n<p>\u8bf7\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<div>\n<p>flask_app\/app\/models\/question.py \u7684\u6a21\u578b\u6587\u4ef6<\/p>\n<\/div>\n<pre class=\"post-pre\"><code>from app.extensions import db\r\n\r\nclass Question(db.Model):\r\n    id = db.Column(db.Integer, primary_key=True)\r\n    content = db.Column(db.Text)\r\n    answer = db.Column(db.Text)\r\n\r\n    def __repr__(self):\r\n        return f'&lt;Question {self.content}&gt;'\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u4f60\u4eceapp.extensions\u6a21\u5757\u4e2d\u5bfc\u5165\u6570\u636e\u5e93\u5bf9\u8c61db\u3002\u7136\u540e\uff0c\u4f60\u4f7f\u7528db.Model\u7c7b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aQuestion\u7684\u6a21\u578b\u3002\u5728\u8fd9\u4e2a\u6a21\u578b\u4e2d\uff0c\u4f60\u62e5\u6709\u4e00\u4e2a\u540d\u4e3aID\u7684\u6574\u6570\u5217\u4f5c\u4e3a\u4e3b\u952e\uff08id\uff09\uff0c\u4e00\u4e2a\u7528\u4e8e\u5b58\u50a8\u95ee\u9898\u5185\u5bb9\u7684\u6587\u672c\u5217\uff08content\uff09\uff0c\u4ee5\u53ca\u4e00\u4e2a\u7528\u4e8e\u5b58\u50a8\u7b54\u6848\u7684\u6587\u672c\u5217\uff08answer\uff09\u3002\u7136\u540e\uff0c\u4f60\u4f7f\u7528\u7279\u6b8a\u7684__repr__()\u65b9\u6cd5\u6765\u4f7f\u7528\u95ee\u9898\u5185\u5bb9\u6765\u8868\u793a\u6bcf\u4e2a\u95ee\u9898\u3002<\/p>\n<p>\u5728\u8fd0\u884c Flask shell \u7684\u7ec8\u7aef\u4f1a\u8bdd\u4e2d\uff0c\u8fd0\u884c\u4ee5\u4e0b\u4ee3\u7801\u57fa\u4e8e\u95ee\u9898\u6a21\u578b\u6765\u521b\u5efa\u95ee\u9898\u8868\uff1a<\/p>\n<pre class=\"post-pre\"><code>flask shell<\/code><\/pre>\n<p>\u8fd0\u884c\u4ee5\u4e0b\u4ee3\u7801\u4ee5\u521b\u5efa\u95ee\u9898\u8868\u5e76\u6dfb\u52a0\u4e00\u4e9b\u95ee\u9898\u548c\u7b54\u6848\u5230\u5176\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<ol>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">from app.extensions import db<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">from app.models.question import Question<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">db.create_all()<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\"><\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">q1 = Question(content='\u4e3a\u4ec0\u4e48\u5929\u7a7a\u662f\u84dd\u8272\u7684\uff1f', answer='\u56e0\u4e3a...\u4e3a\u4ec0\u4e48\u4e0d\u5462\uff1f')<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">q2 = Question(content='\u4ec0\u4e48\u662f\u7231\uff1f', answer='\u901a\u5f80\u51a5\u754c\u7684\u5927\u95e8\u3002')<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">db.session.add_all([q1, q2])<\/li>\r\n\t<li data-prefix=\"&gt;&gt;&gt;\">db.session.commit()<\/li>\r\n<\/ol>\r\n<\/code><\/pre>\n<p>\u4ee3\u7801\u5e94\u8be5\u5728\u6ca1\u6709\u8f93\u51fa\u7684\u60c5\u51b5\u4e0b\u6267\u884c\u3002\u5982\u679c\u4f60\u6536\u5230\u9519\u8bef\u4fe1\u606f\uff0c\u8bf7\u68c0\u67e5\u4f60\u7684 app\/models\/question.py \u6587\u4ef6\uff0c\u786e\u4fdd\u4ee3\u7801\u7684\u8bed\u6cd5\u6b63\u786e\u3002<\/p>\n<p>\u4f60\u5bfc\u5165\u6570\u636e\u5e93\u5bf9\u8c61\u548c\u95ee\u9898\u6a21\u578b\uff0c\u7136\u540e\u4f7f\u7528db.create_all()\u6765\u521b\u5efa\u8868\uff0c\u6700\u540e\u4f60\u5c06\u4e24\u4e2a\u95ee\u9898\u5bf9\u8c61\u6dfb\u52a0\u5230\u6570\u636e\u5e93\u4f1a\u8bdd\u4e2d\u5e76\u63d0\u4ea4\u4e8b\u52a1\u3002<\/p>\n<p>\u9000\u51faFlask shell:<\/p>\n<pre class=\"post-pre\"><code>\r\n<ol>\r\n\t<li data-prefix=\"(env)sammy@localhost:$\">exit()<\/li>\r\n<\/ol>\r\n<\/code><\/pre>\n<p>\u73b0\u5728\u4f60\u53ef\u4ee5\u5728\u95ee\u9898\u84dd\u56fe\u4e2d\u4e0e\u65b0\u7684\u95ee\u9898\u6a21\u578b\u8fdb\u884c\u4ea4\u4e92\u4e86\u3002\u4e3a\u6b64\uff0c\u8bf7\u6253\u5f00\u95ee\u9898\u84dd\u56fe\u7684routes.py\u6587\u4ef6\uff0c\u4ee5\u4fee\u6539\u67e5\u8be2\u5e76\u663e\u793a\u95ee\u9898\u8868\u4e2d\u7684\u95ee\u9898\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<ol>\r\n\t<li data-prefix=\"sammy@localhost:$\">nano app\/questions\/routes.py<\/li>\r\n<\/ol>\r\n<\/code><\/pre>\n<p>\u5728\u6587\u4ef6\u4e2d\u7f16\u8f91\uff0c\u6dfb\u52a0\u88ab\u6807\u8bb0\u51fa\u6765\u7684\u884c\u3002<\/p>\n<div>\u95ee\u9898\u6a21\u5757\u7684\u8def\u7531\u8bbe\u7f6e<\/p>\n<pre class=\"post-pre\"><code>from flask import render_template\r\nfrom app.questions import bp\r\n<mark>from app.models.question import Question<\/mark>\r\n\r\n@bp.route('\/')\r\ndef index():\r\n    <mark>questions = Question.query.all()<\/mark>\r\n    return render_template('questions\/index.html'<mark>, questions=questions<\/mark>)\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p><\/div>\n<p>\u5728\u8fd9\u91cc\uff0c\u60a8\u5bfc\u5165\u4e86\u95ee\u9898\u6a21\u578b\uff0c\u83b7\u53d6\u4e86\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u95ee\u9898\uff0c\u7136\u540e\u5c06\u5b83\u4eec\u4f20\u9012\u7ed9\u95ee\u9898\u7d22\u5f15\u6a21\u677f\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u4f60\u5c06\u5c55\u793a\u901a\u8fc7\u95ee\u9898\u7d22\u5f15\u6a21\u677f\u4f20\u9012\u7684\u95ee\u9898\uff0c\u5e76\u6dfb\u52a0\u4e00\u4e2a\u7f51\u9875\u8868\u5355\uff0c\u5141\u8bb8\u7528\u6237\u6dfb\u52a0\u65b0\u95ee\u9898\u3002\u5728\u95ee\u9898\u6a21\u677f\u76ee\u5f55\u4e2d\u6253\u5f00index.html\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<ol>\r\n\t<li data-prefix=\"(env)sammy@localhost:$\">nano app\/templates\/questions\/index.html<\/li>\r\n<\/ol>\r\n<\/code><\/pre>\n<p>\u6dfb\u52a0\u7a81\u51fa\u663e\u793a\u7684\u884c\u6765\u7f16\u8f91\u6587\u4ef6\u3002<\/p>\n<div>\n<p>Flask\u5e94\u7528\u7a0b\u5e8f\u6a21\u677f\u7684\u95ee\u9898\u7d22\u5f15\u9875\u3002<\/p>\n<pre class=\"post-pre\"><code>{% extends 'base.html' %}\r\n\r\n{% block content %}\r\n    \r\n        {% block title %} \u95ee\u9898 {% endblock %}\r\n        \u95ee\u9898\u84dd\u56fe\r\n                {% for question in questions %}\r\n                    \r\n                        {{ question.content }}\r\n                        {{ question.answer }}\r\n\r\n                {% endfor %}\r\n                \r\n{% endblock %}\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p><\/div>\n<p>\u5728\u8fd9\u91cc\uff0c\u4f60\u521b\u5efa\u4e86\u4e00\u4e2a\u5e26\u6709\u4e24\u4e2a\u6587\u672c\u533a\u57df\u7684\u8868\u5355\uff1a\u4e00\u4e2a\u7528\u4e8e\u95ee\u9898\u5185\u5bb9\uff0c\u4e00\u4e2a\u7528\u4e8e\u56de\u7b54\u3002\u7136\u540e\u4f60\u4e3a\u8868\u5355\u6dfb\u52a0\u4e86\u4e00\u4e2a\u63d0\u4ea4\u6309\u94ae\u3002<\/p>\n<p>\u5728\u8868\u5355\u4e0b\u65b9\uff0c\u4f60\u5faa\u73af\u904d\u5386\u4ece\u95ee\u9898\u7d22\u5f15\u8def\u5f84\u4f20\u9012\u8fc7\u6765\u7684\u95ee\u9898\u53d8\u91cf\uff0c\u663e\u793a\u6bcf\u4e2a\u95ee\u9898\u7684\u5185\u5bb9\u548c\u7b54\u6848\u3002<\/p>\n<p>\u5728\u60a8\u7684\u5f00\u53d1\u670d\u52a1\u5668\u8fd0\u884c\u65f6\uff0c\u4f7f\u7528\u6d4f\u89c8\u5668\u5bfc\u822a\u5230\u95ee\u9898\u7d22\u5f15\u9875\u9762\u3002<\/p>\n<pre class=\"post-pre\"><code>http:\/\/127.0.0.1:5000\/questions\/\r\n<\/code><\/pre>\n<p>\u9875\u9762\u5c06\u52a0\u8f7d\u84dd\u56fe\u6807\u9898\u3001\u63d0\u4ea4\u8868\u683c\u548c\u4e24\u4e2a\u793a\u4f8b\u95ee\u9898\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65645b10a4b2f92e6c7229d3\/368-0.png\" alt=\"\u95ee\u9898\u7d22\u5f15\" \/><\/div>\n<p>\u7136\u800c\uff0c\u586b\u5199\u548c\u63d0\u4ea4\u8868\u5355\u4f1a\u5bfc\u81f4\u4e00\u4e2a405 Method Not Allowed\u7684HTTP\u9519\u8bef\uff0c\u56e0\u4e3a\u8be5\u8868\u5355\u53d1\u9001\u4e00\u4e2aPOST\u8bf7\u6c42\u5230\u95ee\u9898\u7d22\u5f15\u8def\u7531\uff0c\u4f46\u662f\u8be5\u8def\u7531\u4e0d\u63a5\u53d7\u4e5f\u4e0d\u5904\u7406POST\u8bf7\u6c42\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u5e76\u4f7f\u8868\u5355\u8fd0\u4f5c\u6b63\u5e38\uff0c\u4f60\u9700\u8981\u4fee\u6539\u95ee\u9898\u84dd\u56fe\u7684\u7d22\u5f15\u8def\u7531\uff0c\u5e76\u4f7f\u7528\u8868\u5355\u6570\u636e\u6dfb\u52a0\u65b0\u7684\u95ee\u9898\u5230\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n<p>\u6253\u5f00\u95ee\u9898\u84dd\u56fe\u7684 routes.py \u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<ol>\r\n\t<li data-prefix=\"(env)sammy@localhost:$\">nano app\/questions\/routes.py<\/li>\r\n<\/ol>\r\n<\/code><\/pre>\n<p>\u5728\u6587\u4ef6\u4e2d\u6dfb\u52a0\u9ad8\u4eae\u7684\u884c\uff0c\u8fdb\u884c\u7f16\u8f91\u3002<\/p>\n<div>flask_app\/app\/questions\/routes.py \u6587\u4ef6\u8def\u5f84<\/p>\n<pre class=\"post-pre\"><code>from flask import render_template<mark>, request, url_for, redirect<\/mark>\r\nfrom app.questions import bp\r\nfrom app.models.question import Question\r\n<mark>from app.extensions import db<\/mark>\r\n\r\n@bp.route('\/'<mark>, methods=('GET', 'POST')<\/mark>)\r\ndef index():\r\n    questions = Question.query.all()\r\n\r\n    <mark>if request.method == 'POST':<\/mark>\r\n        <mark>new_question = Question(content=request.form['content'],<\/mark>\r\n                                <mark>answer=request.form['answer'])<\/mark>\r\n        <mark>db.session.add(new_question)<\/mark>\r\n        <mark>db.session.commit()<\/mark>\r\n        <mark>return redirect(url_for('questions.index'))<\/mark>\r\n\r\n    return render_template('questions\/index.html', questions=questions)\r\n<\/code><\/pre>\n<p>\u4fdd\u5b58\u5e76\u5173\u95ed\u6587\u4ef6\u3002<\/p><\/div>\n<p>\u901a\u8fc7\u5c06(&#8216;GET&#8217;, &#8216;POST&#8217;)\u5143\u7ec4\u4f20\u9012\u7ed9\u65b9\u6cd5\u53c2\u6570\uff0c\u60a8\u53ef\u4ee5\u5141\u8bb8GET\u548cPOST\u65b9\u6cd5\u3002\u60a8\u53ef\u4ee5\u5728if request.method == 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