{"id":28296,"date":"2023-07-25T22:20:28","date_gmt":"2023-04-05T18:25:44","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8python%e7%9a%84flask%e6%a1%86%e6%9e%b6%e5%b0%9d%e8%af%95%e6%89%93%e5%8d%b0hello-world%e3%80%82\/"},"modified":"2025-08-12T07:23:54","modified_gmt":"2025-08-11T23:23:54","slug":"%e4%bd%bf%e7%94%a8python%e7%9a%84flask%e6%a1%86%e6%9e%b6%e5%b0%9d%e8%af%95%e6%89%93%e5%8d%b0hello-world%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8python%e7%9a%84flask%e6%a1%86%e6%9e%b6%e5%b0%9d%e8%af%95%e6%89%93%e5%8d%b0hello-world%e3%80%82\/","title":{"rendered":"\u4f7f\u7528Python\u7684\u201cFlask\u201d\u6846\u67b6\u5c1d\u8bd5\u6253\u5370\u201cHello World\u201d"},"content":{"rendered":"<h1>\u7b80\u8ff0<\/h1>\n<p>\u6211\u4e4b\u524d\u6ca1\u6709\u5728Python\u4e2d\u5f00\u53d1Web\u5e94\u7528\u7a0b\u5e8f\u7684\u7ecf\u9a8c\uff0c\u6240\u4ee5\u6211\u5c1d\u8bd5\u4f7f\u7528Flask\u6846\u67b6\u6765\u8fdb\u884c\u4e00\u4e9b\u5b66\u4e60\u548c\u521b\u5efa\u3002<br \/>\n\u672c\u6587\u662f\u5173\u4e8e\u6700\u57fa\u672c\u7684Hello World\u5b9e\u73b0\u3002<\/p>\n<h1>Flask\u662f\u4ec0\u4e48<\/h1>\n<p>Flask\u6587\u6863<br \/>\nFlask\u4e2d\u6587\u6587\u6863<\/p>\n<p>Flask\u662f\u4e00\u4e2a\u7528Python\u7f16\u5199\u7684\u5fae\u578bWeb\u6846\u67b6\u3002\u5fae\u578b\u6846\u67b6\u662f\u6307\u4fdd\u6301\u6838\u5fc3\u529f\u80fd\u7684\u540c\u65f6\u5177\u6709\u6269\u5c55\u6027\u7684\u89e3\u91ca\u3002\u5b83\u5177\u6709\u8bb8\u591a\u6269\u5c55\u529f\u80fd\uff0c\u5e76\u4e14\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8fdb\u884c\u6dfb\u52a0\uff0c\u4ece\u800c\u5177\u6709\u5f88\u9ad8\u7684\u81ea\u7531\u5ea6\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u6700\u57fa\u672c\u7684\u529f\u80fd\u6240\u9700\u7684\u5b66\u4e60\u6210\u672c\u5f88\u4f4e\uff0c\u4efb\u4f55\u4eba\u90fd\u53ef\u4ee5\u7acb\u5373\u4f7f\u7528\u3002<\/p>\n<p>\u4ece\u5b9e\u65bd\u89d2\u5ea6\u6765\u770b\uff0cDjango\u4f5c\u4e3a\u4e00\u4e2a\u5168\u6808\u6846\u67b6\u5b9e\u73b0\u4e86\u8bb8\u591a\u5f00\u53d1\u6240\u9700\u7684\u529f\u80fd\u3002<\/p>\n<h1>\u5f00\u53d1\u73af\u5883<\/h1>\n<p>Windows10\u64cd\u4f5c\u7cfb\u7edf<br \/>\nDocker\u7248\u672c\u4e3a20.10.7<br \/>\nVisual Studio Code\u7248\u672c\u4e3a1.7.1<\/p>\n<p>\u6211\u6b63\u5728\u4f7f\u7528Docker\u6784\u5efaCentOS7\u73af\u5883\uff0c\u5e76\u5728\u5bb9\u5668\u5185\u8fdb\u884c\u521b\u5efa\u3002<\/p>\n<h1>\u4e8b\u5148\u5b89\u6392<\/h1>\n<p>\u6211\u4eec\u5c06\u7ee7\u7eed\u8fdb\u884c\u4f7f\u7528Flask\u7684\u51c6\u5907\u5de5\u4f5c\u3002<\/p>\n<h3>\u542f\u52a8\u5bb9\u5668<\/h3>\n<p>\u672c\u6b21\u6211\u4eec\u5c06\u4f7f\u7528\u5df2\u53d1\u5e03\u7684CentOS7 Docker\u955c\u50cf\u6784\u5efa\u5bb9\u5668\u3002<br \/>\n\u6267\u884cDocker\u955c\u50cf\u83b7\u53d6\u548c\u5bb9\u5668\u542f\u52a8\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># Docker\u30a4\u30e1\u30fc\u30b8\u53d6\u5f97<\/span>\r\n<span class=\"nv\">$ <\/span>docker pull centos:centos7\r\ncentos7: Pulling from library\/centos\r\n2d473b07cdd5: Already exists\r\nDigest: sha256:c73f515d06b0fa07bb18d8202035e739a494ce760aa73129f60f4bf2bd22b407\r\nStatus: Downloaded newer image <span class=\"k\">for <\/span>centos:centos7\r\ndocker.io\/library\/centos:centos7\r\n\r\n<span class=\"nv\">$ <\/span>docker images\r\nREPOSITORY    TAG       IMAGE ID       CREATED         SIZE\r\ncentos        centos7   eeb6ee3f44bd   11 months ago   204MB\r\n\r\n<span class=\"c\"># \u30b3\u30f3\u30c6\u30ca\u8d77\u52d5<\/span>\r\n<span class=\"nv\">$ <\/span>docker run <span class=\"nt\">-it<\/span> <span class=\"nt\">-d<\/span> <span class=\"nt\">--name<\/span> centos7 centos:centos7\r\nc4e8532de5f720c60097a7eef5cf33b049dffc4122d68dfd41ff9887ceeced46\r\n\r\n<span class=\"nv\">$ <\/span>docker ps\r\nCONTAINER ID   IMAGE            COMMAND       CREATED          STATUS          PORTS     NAMES\r\nc4e8532de5f7   centos:centos7   <span class=\"s2\">\"\/bin\/bash\"<\/span>   35 seconds ago   Up 32 seconds             centos7\r\n<\/code><\/pre>\n<h3>\u51c6\u5907Python\u73af\u5883<\/h3>\n<p>\u4ece\u8fd9\u91cc\u5f00\u59cb\uff0c\u5c06\u5728\u5bb9\u5668\u5185\u8fdb\u884c\u64cd\u4f5c\u3002<br \/>\n\u5982\u679c\u5c1a\u672a\u5b89\u88c5\uff0c\u8bf7\u8fdb\u884cPython\u7684\u5b89\u88c5\u3002<br \/>\n\u8fd9\u6b21\u5b89\u88c5\u7684\u662fPython 3.6.8\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># python3\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/span>\r\n<span class=\"nv\">$ <\/span>yum <span class=\"nb\">install<\/span> <span class=\"nt\">-y<\/span> python3\r\n     <span class=\"nt\">--<\/span> \u7701\u7565 <span class=\"nt\">--<\/span>\r\n\r\n<span class=\"nv\">$ <\/span>python <span class=\"nt\">--version<\/span>\r\nPython 3.6.8\r\n<\/code><\/pre>\n<p>\u4f7f\u7528venv\u6784\u5efa\u548c\u6fc0\u6d3b\u865a\u62df\u73af\u5883\u3002<br \/>\n\u865a\u62df\u73af\u5883\u7684\u540d\u79f0\u8bbe\u4e3avenv\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># \u4f5c\u696d\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u79fb\u52d5<\/span>\r\n<span class=\"nv\">$ <\/span><span class=\"nb\">cd <\/span>working_dir\r\n\r\n<span class=\"c\"># \u4eee\u60f3\u74b0\u5883venv\u306e\u4f5c\u6210<\/span>\r\n<span class=\"nv\">$ <\/span>python3 <span class=\"nt\">-m<\/span> venv venv\r\n\r\n<span class=\"c\"># \u4eee\u60f3\u74b0\u5883venv\u306e\u6709\u52b9\u5316<\/span>\r\n<span class=\"nv\">$ <\/span><span class=\"nb\">source <\/span>venv\/bin\/activate\r\n<\/code><\/pre>\n<p>\u5728\u865a\u62df\u73af\u5883\u4e2d\u5b89\u88c5Flask\u3002<br \/>\n\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528Flask\u547d\u4ee4\u3002<br \/>\n\u51c6\u5907\u5de5\u4f5c\u5df2\u7ecf\u5b8c\u6210\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># flask\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/span>\r\n<span class=\"o\">(<\/span>venv<span class=\"o\">)<\/span><span class=\"nv\">$ <\/span>pip <span class=\"nb\">install <\/span>flask\r\n<\/code><\/pre>\n<h2>Flask\u89c4\u683c<\/h2>\n<h3>\u5173\u4e8e\u73af\u5883\u53d8\u91cf\u7684\u5185\u5bb9<\/h3>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u4e24\u4e2a\u73af\u5883\u53d8\u91cf\u6765\u63a7\u5236Flask\u3002<br \/>\n\u60a8\u53ef\u4ee5\u4e8b\u5148\u4f7f\u7528export\u8bbe\u7f6e\u73af\u5883\u53d8\u91cf\uff0c\u6216\u901a\u8fc7.env\u6587\u4ef6\u8fdb\u884c\u7ba1\u7406\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">FLASK_APP\u3000\uff1a\u3000\u30a2\u30d7\u30ea\u8d77\u52d5\u6642\u306b\u5b9f\u884c\u3059\u308b\u30bd\u30fc\u30b9\u3092\u6307\u5b9a\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">FLASK_ENV\u3000\uff1a\u3000\u958b\u767a\u304b\u672c\u756a\u304b\u6307\u5b9a\u3059\u308b(development or production)<\/ul>\n<p>\u800c\u4e14\uff0c\u5f53\u6709.env\u6587\u4ef6\u5b58\u5728\u65f6\uff0c\u8fd0\u884c\u5e94\u7528\u7a0b\u5e8f\u540e\uff0c\u5e94\u7528\u7a0b\u5e8f\u7684\u6839\u76ee\u5f55\u5c06\u6210\u4e3a.env\u6587\u4ef6\u6240\u5728\u7684\u76ee\u5f55\u3002<\/p>\n<h1>\u7f16\u5199\u6e90\u4ee3\u7801<\/h1>\n<p>\u6211\u5011\u4e3b\u8981\u900f\u904e\u5c07\u8acb\u6c42\u7684URI\u8207\u51fd\u6578\u7d81\u5b9a\u4f86\u9032\u884c\u8def\u7531\u3002\u901a\u904e\u5728\u51fd\u6578\u958b\u982d\u6dfb\u52a0\u4e00\u500b\u7a31\u70ba@app.route()\u7684\u88dd\u98fe\u5668\uff0c\u53ef\u4ee5\u6dfb\u52a0\u8def\u7531\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">from<\/span> <span class=\"n\">flask<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">Flask<\/span>\r\n\r\n<span class=\"n\">app<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Flask<\/span><span class=\"p\">(<\/span><span class=\"n\">__name__<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"c1\"># http:\/\/127.0.0.1:5000\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3068\u304d\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\r\n<\/span><span class=\"nd\">@app.route<\/span><span class=\"p\">(<\/span><span class=\"sh\">\"<\/span><span class=\"s\">\/<\/span><span class=\"sh\">\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"k\">def<\/span> <span class=\"nf\">index<\/span><span class=\"p\">():<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"sh\">\"<\/span><span class=\"s\">Hello Flask!<\/span><span class=\"sh\">\"<\/span>\r\n\r\n<span class=\"c1\"># http:\/\/127.0.0.1:5000\/hello\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3068\u304d\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\r\n<\/span><span class=\"nd\">@app.route<\/span><span class=\"p\">(<\/span><span class=\"sh\">\"<\/span><span class=\"s\">\/hello<\/span><span class=\"sh\">\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"k\">def<\/span> <span class=\"nf\">hello<\/span><span class=\"p\">():<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"sh\">\"<\/span><span class=\"s\">Hello Wolrd!<\/span><span class=\"sh\">\"<\/span>\r\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u4f7f\u7528Flask\u7684routes\u547d\u4ee4\u6765\u786e\u8ba4\u5df2\u521b\u5efa\u7684\u8def\u7531\u3002<br \/>\n\u6211\u4eec\u9700\u8981\u786e\u8ba4\u5df2\u7ecf\u521b\u5efa\u4e86\u4e24\u4e2a\u8def\u7531\uff1aindex\u548chello\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"o\">(<\/span>venv<span class=\"o\">)<\/span> <span class=\"nv\">$ <\/span>flask routes\r\nEndpoint        Methods    Rule\r\n<span class=\"nt\">--------------<\/span>  <span class=\"nt\">---------<\/span>  <span class=\"nt\">-----------------------<\/span>\r\nhello           GET        \/hello\r\nindex           GET        \/\r\nstatic          GET        \/static\/&lt;path:filename&gt;\r\n<\/code><\/pre>\n<h1>\u6267\u884c\u5e94\u7528\u7a0b\u5e8f<\/h1>\n<p>\u53ef\u4ee5\u5c06hello.py\u8bbe\u7f6e\u4e3a\u73af\u5883\u53d8\u91cfFLASK_APP\u3002<br \/>\n\u4e3a\u4e86\u5f00\u53d1\u76ee\u7684\uff0c\u5c06\u73af\u5883\u53d8\u91cfFLASK_ENV\u8bbe\u7f6e\u4e3adevelopment\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span><span class=\"nb\">export <\/span><span class=\"nv\">FLASK_APP<\/span><span class=\"o\">=<\/span>hello.py\r\n<span class=\"nv\">$ <\/span><span class=\"nb\">export <\/span><span class=\"nv\">FLASK_ENV<\/span><span class=\"o\">=<\/span>development\r\n<\/code><\/pre>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528 flask run \u547d\u4ee4\u6765\u8fd0\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>flask run\r\n <span class=\"k\">*<\/span> Serving Flask app <span class=\"s1\">'hello.py'<\/span> <span class=\"o\">(<\/span>lazy loading<span class=\"o\">)<\/span>\r\n <span class=\"k\">*<\/span> Environment: development\r\n <span class=\"k\">*<\/span> Debug mode: on\r\n <span class=\"k\">*<\/span> Running on http:\/\/127.0.0.1:5000\/ <span class=\"o\">(<\/span>Press CTRL+C to quit<span class=\"o\">)<\/span>\r\n <span class=\"k\">*<\/span> Restarting with <span class=\"nb\">stat<\/span>\r\n <span class=\"k\">*<\/span> Debugger is active!\r\n <span class=\"k\">*<\/span> Debugger PIN: XXX-XXX-XXX\r\n<\/code><\/pre>\n<p>\u5982\u679c\u8bbf\u95ee http:\/\/127.0.0.1:5000\uff0c\u663e\u793a\u201cHello Flask\uff01\u201d\u5219\u8868\u793a\u6b63\u5e38\u3002<br \/>\n\u5982\u679c\u8bbf\u95ee http:\/\/127.0.0.1:5000\/hello\uff0c\u5c06\u663e\u793a\u201cHello World\uff01\u201d\u3002<\/p>\n<h1>\u6574\u7406<\/h1>\n<p>\u8981\u5728Flask\u4e0a\u521b\u5efaHello World\u5e94\u7528\u7a0b\u5e8f\uff0c\u6309\u4ee5\u4e0b\u6b65\u9aa4\u5373\u53ef\u3002<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u5b89\u88c5Flask\u6846\u67b6<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u4f7f\u7528\u4ee3\u7801\u5b9e\u73b0\u8def\u7531<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u8bbe\u7f6e\u73af\u5883\u53d8\u91cf<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\u542f\u52a8\u5e94\u7528<\/ol>\n<p>\u5982\u679c\u6709\u65b9\u4fbf\u7684\u8981\u70b9\uff0c\u6211\u8ba1\u5212\u5728\u53e6\u4e00\u7bc7\u6587\u7ae0\u4e2d\u8fdb\u4e00\u6b65\u53d1\u5e03\u3002<\/p>\n<h1>\u5f15\u7528\u6587\u732e<\/h1>\n<p>\u4f7f\u7528Python\u7684Flask\u8fdb\u884cWeb\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u5165\u95e8<br \/>\n\u4f5c\u8005\uff1a\u4f50\u85e4\u660c\u57fa\uff0c\u5e73\u7530\u54f2\u4e5f<br \/>\n\u76d1\u4fee\uff1a\u5bfa\u7530\u5b66<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u8ff0 \u6211\u4e4b\u524d\u6ca1\u6709\u5728Python\u4e2d\u5f00\u53d1Web\u5e94\u7528\u7a0b\u5e8f\u7684\u7ecf\u9a8c\uff0c\u6240\u4ee5\u6211\u5c1d\u8bd5\u4f7f\u7528Flask\u6846\u67b6\u6765\u8fdb\u884c\u4e00\u4e9b\u5b66\u4e60\u548c\u521b\u5efa\u3002  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