{"id":126,"date":"2026-06-14T10:06:08","date_gmt":"2026-06-14T02:06:08","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=126"},"modified":"2026-06-14T10:06:08","modified_gmt":"2026-06-14T02:06:08","slug":"fastapi-%e6%a0%b8%e5%bf%83%e6%a6%82%e5%bf%b5","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2026\/06\/14\/fastapi-%e6%a0%b8%e5%bf%83%e6%a6%82%e5%bf%b5\/","title":{"rendered":"FastAPI \u6838\u5fc3\u6982\u5ff5"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u4e3a\u60a8\u6574\u7406\u7684 <strong>FastAPI \u6838\u5fc3\u6982\u5ff5<\/strong>\u5168\u666f\u6307\u5357\u3002\u4e3a\u4e86\u5e2e\u52a9\u60a8\u6784\u5efa\u5b8c\u6574\u7684\u77e5\u8bc6\u4f53\u7cfb\uff0c\u672c\u6587\u7279\u522b\u589e\u52a0\u4e86<strong>\u51fa\u7ad9\u94fe\u63a5<\/strong>\u3001<strong>\u53c2\u8003\u8d44\u6599<\/strong>\u3001<strong>\u7ad9\u5185\u77e5\u8bc6\u5173\u8054<\/strong>\u4ee5\u53ca<strong>\u76f8\u5173\u9605\u8bfb<\/strong>\u6a21\u5757\uff0c\u65b9\u4fbf\u60a8\u8fdb\u884c\u6df1\u5ea6\u62d3\u5c55\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83c\udfdb\ufe0f FastAPI \u56db\u5927\u6838\u5fc3\u652f\u67f1<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">FastAPI \u7684\u8bbe\u8ba1\u54f2\u5b66\u53ef\u4ee5\u6d53\u7f29\u4e3a\u4ee5\u4e0b\u56db\u4e2a\u57fa\u77f3\uff0c\u5b83\u4eec\u5171\u540c\u9020\u5c31\u4e86\u5176\u9ad8\u6027\u80fd\u4e0e\u9ad8\u5f00\u53d1\u4f53\u9a8c\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u7c7b\u578b\u63d0\u793a\u9a71\u52a8 (Type Hints Driven)<\/strong><br>FastAPI \u4e25\u91cd\u4f9d\u8d56 Python 3 \u7684\u7c7b\u578b\u63d0\u793a\uff08\u5982 <code>item_id: int<\/code>\uff09\u3002\u8fd9\u4e0d\u4ec5\u662f\u4ee3\u7801\u6ce8\u91ca\uff0c\u66f4\u662f<strong>\u53ef\u6267\u884c\u7684\u5951\u7ea6<\/strong>\u3002\u6846\u67b6\u5728\u8fd0\u884c\u65f6\u8bfb\u53d6\u8fd9\u4e9b\u63d0\u793a\uff0c\u81ea\u52a8\u5b8c\u6210\u6570\u636e\u8f6c\u6362\u3001\u8def\u7531\u5339\u914d\u548c\u9519\u8bef\u62e6\u622a\u3002<\/li>\n\n\n\n<li><strong>Pydantic \u6570\u636e\u9a8c\u8bc1 (Data Validation)<\/strong><br>\u4f5c\u4e3a FastAPI \u7684\u201c\u5b88\u95e8\u5458\u201d\uff0cPydantic \u8d1f\u8d23\u5728\u8bf7\u6c42\u5230\u8fbe\u4e1a\u52a1\u903b\u8f91\u524d\uff0c\u4e25\u683c\u6821\u9a8c JSON\/Form \u6570\u636e\u7684\u7ed3\u6784\u3001\u7c7b\u578b\u548c\u7ea6\u675f\uff1b\u5728\u54cd\u5e94\u8fd4\u56de\u524d\uff0c\u81ea\u52a8\u5e8f\u5217\u5316\u6570\u636e\u5e76\u8fc7\u6ee4\u654f\u611f\u5b57\u6bb5\uff08\u901a\u8fc7 <code>response_model<\/code>\uff09\u3002<\/li>\n\n\n\n<li><strong>\u4f9d\u8d56\u6ce8\u5165\u7cfb\u7edf (Dependency Injection)<\/strong><br>\u901a\u8fc7 <code>Depends()<\/code>\uff0cFastAPI \u63d0\u4f9b\u4e86\u4e00\u79cd\u58f0\u660e\u5f0f\u7684\u89e3\u8026\u673a\u5236\u3002\u65e0\u8bba\u662f\u6570\u636e\u5e93\u8fde\u63a5\u3001\u5206\u9875\u53c2\u6570\u8fd8\u662f JWT \u6743\u9650\u6821\u9a8c\uff0c\u90fd\u53ef\u4ee5\u5c01\u88c5\u4e3a\u72ec\u7acb\u7684\u4f9d\u8d56\u9879\uff0c\u5b9e\u73b0\u4ee3\u7801\u7684\u9ad8\u5ea6\u590d\u7528\u548c\u6781\u7b80\u7684\u5355\u5143\u6d4b\u8bd5\uff08\u901a\u8fc7 <code>dependency_overrides<\/code>\uff09\u3002<\/li>\n\n\n\n<li><strong>ASGI \u4e0e\u5f02\u6b65\u539f\u751f (ASGI &amp; Async Native)<\/strong><br>\u57fa\u4e8e ASGI (Asynchronous Server Gateway Interface) \u6807\u51c6\uff08\u7531 Uvicorn \u9a71\u52a8\uff09\uff0cFastAPI \u539f\u751f\u652f\u6301 <code>async<\/code>\/<code>await<\/code>\u3002\u5728\u5904\u7406 I\/O \u5bc6\u96c6\u578b\u4efb\u52a1\uff08\u5982\u6570\u636e\u5e93\u67e5\u8be2\u3001\u5916\u90e8 API \u8c03\u7528\uff09\u65f6\uff0c\u80fd\u5b9e\u73b0\u6781\u9ad8\u7684\u5e76\u53d1\u541e\u5410\u91cf\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd04 \u6838\u5fc3\u5de5\u4f5c\u6d41\uff1a\u4e00\u4e2a\u8bf7\u6c42\u7684\u751f\u547d\u5468\u671f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u5ba2\u6237\u7aef\u53d1\u8d77 HTTP \u8bf7\u6c42\u65f6\uff0cFastAPI \u5185\u90e8\u4f1a\u4e25\u683c\u6267\u884c\u4ee5\u4e0b\u6d41\u6c34\u7ebf\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u8def\u7531\u5339\u914d<\/strong>\uff1a\u6839\u636e HTTP Method \u548c URL Path \u627e\u5230\u5bf9\u5e94\u7684\u8def\u5f84\u64cd\u4f5c\u51fd\u6570\u3002<\/li>\n\n\n\n<li><strong>\u4f9d\u8d56\u89e3\u6790<\/strong>\uff1a\u6309\u62d3\u6251\u987a\u5e8f\u6267\u884c\u6240\u6709 <code>Depends()<\/code>\uff0c\u83b7\u53d6\u6240\u9700\u4e0a\u4e0b\u6587\uff08\u5982 DB Session\u3001Current User\uff09\u3002<\/li>\n\n\n\n<li><strong>\u6570\u636e\u9a8c\u8bc1<\/strong>\uff1a\u4f7f\u7528 Pydantic \u6821\u9a8c Path\u3001Query \u548c Body \u53c2\u6570\u3002<strong>\u82e5\u5931\u8d25\uff0c\u6d41\u7a0b\u5728\u6b64\u7ec8\u6b62<\/strong>\uff0c\u76f4\u63a5\u8fd4\u56de <code>422 Unprocessable Entity<\/code>\u3002<\/li>\n\n\n\n<li><strong>\u4e1a\u52a1\u6267\u884c<\/strong>\uff1a\u5c06\u9a8c\u8bc1\u901a\u8fc7\u7684\u6570\u636e\u6ce8\u5165\u51fd\u6570\uff0c\u6267\u884c\u60a8\u7684\u6838\u5fc3\u4e1a\u52a1\u903b\u8f91\u3002<\/li>\n\n\n\n<li><strong>\u54cd\u5e94\u5e8f\u5217\u5316<\/strong>\uff1a\u82e5\u5b9a\u4e49\u4e86 <code>response_model<\/code>\uff0c\u5c06\u8fd4\u56de\u503c\u8f6c\u6362\u4e3a\u8be5\u6a21\u578b\uff0c\u8fc7\u6ee4\u591a\u4f59\u5b57\u6bb5\u5e76\u5e8f\u5217\u5316\u4e3a JSON\u3002<\/li>\n\n\n\n<li><strong>\u8d44\u6e90\u6e05\u7406<\/strong>\uff1a\u82e5\u4f9d\u8d56\u9879\u4f7f\u7528\u4e86 <code>yield<\/code>\uff0c\u6b64\u65f6\u6267\u884c <code>finally<\/code> \u5757\uff0c\u5b89\u5168\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5\u6216\u6587\u4ef6\u53e5\u67c4\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd17 \u77e5\u8bc6\u5e93\u62d3\u5c55\u5bfc\u822a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4e86\u5e2e\u52a9\u60a8\u4ece\u201c\u4f1a\u7528\u201d\u8fdb\u9636\u5230\u201c\u7cbe\u901a\u201d\uff0c\u4ee5\u4e0b\u4e3a\u60a8\u6574\u7406\u4e86\u76f8\u5173\u7684\u6df1\u5ea6\u9605\u8bfb\u8d44\u6e90\uff1a<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\ud83c\udf10 \u51fa\u7ad9\u94fe\u63a5 (External Links)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/fastapi.tiangolo.com\/zh\/\">FastAPI \u5b98\u65b9\u6587\u6863 (\u4e2d\u82f1\u6587)<\/a><\/strong>\uff1a\u88ab\u516c\u8ba4\u4e3a Python \u6846\u67b6\u4e2d\u5199\u5f97\u6700\u597d\u7684\u6587\u6863\uff0c\u5305\u542b\u8be6\u5c3d\u7684\u6559\u7a0b\u548c\u9ad8\u7ea7\u7528\u6237\u6307\u5357\u3002<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/docs.pydantic.dev\/latest\/\">Pydantic V2 \u5b98\u65b9\u6587\u6863<\/a><\/strong>\uff1a\u6df1\u5165\u4e86\u89e3\u6570\u636e\u9a8c\u8bc1\u3001<code>model_validator<\/code>\u3001<code>computed_field<\/code> \u7b49\u9ad8\u7ea7\u7279\u6027\u3002<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.starlette.io\/\">Starlette \u6587\u6863<\/a><\/strong>\uff1aFastAPI \u7684\u5e95\u5c42 Web \u6846\u67b6\uff0c\u4e86\u89e3\u5b83\u6709\u52a9\u4e8e\u7406\u89e3 Request\/Response \u5bf9\u8c61\u3001WebSockets \u548c\u4e2d\u95f4\u4ef6\u7684\u5e95\u5c42\u5b9e\u73b0\u3002<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.uvicorn.org\/\">Uvicorn \u6587\u6863<\/a><\/strong>\uff1a\u4e86\u89e3 ASGI \u670d\u52a1\u5668\u7684\u914d\u7f6e\u3001Worker \u7ba1\u7406\u4ee5\u53ca\u751f\u4ea7\u73af\u5883\u90e8\u7f72\u6700\u4f73\u5b9e\u8df5\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\ud83d\udcda \u53c2\u8003\u8d44\u6599 (References &amp; Standards)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/spec.openapis.org\/oas\/v3.1.0\">OpenAPI Specification (OAS 3.1.0)<\/a><\/strong>\uff1aFastAPI \u81ea\u52a8\u751f\u6210 <code>\/docs<\/code> \u548c <code>\/redoc<\/code> \u6240\u9075\u5faa\u7684\u56fd\u9645\u6807\u51c6\u3002<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/peps.python.org\/pep-0484\/\">PEP 484 &#8212; Type Hints<\/a><\/strong>\uff1aPython \u7c7b\u578b\u63d0\u793a\u7684\u5b98\u65b9\u89c4\u8303\uff0c\u7406\u89e3\u5b83\u6709\u52a9\u4e8e\u5199\u51fa\u66f4\u4e25\u8c28\u7684 FastAPI \u4ee3\u7801\u3002<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/asgi.readthedocs.io\/en\/latest\/\">ASGI Specification<\/a><\/strong>\uff1a\u5f02\u6b65\u670d\u52a1\u5668\u7f51\u5173\u63a5\u53e3\u89c4\u8303\uff0c\u73b0\u4ee3 Python Web \u6846\u67b6\u7684\u57fa\u77f3\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\ud83d\udd17 \u7ad9\u5185\u77e5\u8bc6\u5173\u8054 (Internal Links)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udc49 <strong><a href=\"#\">Python3 \u7c7b\u578b\u63d0\u793a (Type Hints)<\/a><\/strong>\uff1a\u91cd\u6e29 <code>typing<\/code> \u6a21\u5757\u3001\u6cdb\u578b\u4e0e\u7c7b\u578b\u522b\u540d\uff0c\u8fd9\u662f\u5199\u597d FastAPI \u8def\u7531\u7684\u524d\u63d0\u3002<\/li>\n\n\n\n<li>\ud83d\udc49 <strong><a href=\"#\">Python \u88c5\u9970\u5668 (Decorators)<\/a><\/strong>\uff1a\u6df1\u5165\u7406\u89e3 <code>@app.get<\/code> \u548c <code>@app.post<\/code> \u80cc\u540e\u7684\u95ed\u5305\u4e0e\u5143\u4fe1\u606f\u4fdd\u7559 (<code>@wraps<\/code>) \u673a\u5236\u3002<\/li>\n\n\n\n<li>\ud83d\udc49 <strong><a href=\"#\">Python \u5f02\u6b65\u7f16\u7a0b (async\/await)<\/a><\/strong>\uff1a\u638c\u63e1\u4e8b\u4ef6\u5faa\u73af\u3001\u534f\u7a0b\u4e0e <code>await<\/code>\uff0c\u8fd9\u662f\u53d1\u6325 FastAPI \u9ad8\u6027\u80fd\u6f5c\u529b\u7684\u5173\u952e\u3002<\/li>\n\n\n\n<li>\ud83d\udc49 <strong><a href=\"#\">Python \u4f9d\u8d56\u6ce8\u5165\u4e0e\u8bbe\u8ba1\u6a21\u5f0f<\/a><\/strong>\uff1a\u4ece\u8f6f\u4ef6\u5de5\u7a0b\u89d2\u5ea6\u7406\u89e3\u4e3a\u4ec0\u4e48 FastAPI \u7684 <code>Depends<\/code> \u662f\u63a7\u5236\u53cd\u8f6c (IoC) \u7684\u4f18\u96c5\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\ud83d\udcd6 \u76f8\u5173\u9605\u8bfb\u4e0e\u8fdb\u9636\u63a8\u8350 (Further Reading)<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u300aFastAPI \u6846\u67b6\u5165\u95e8\u5230\u5b9e\u8df5\u300b<\/strong> (\u6216\u7c7b\u4f3c\u4e2d\u6587\u5b9e\u6218\u4e66\u7c4d)\uff1a\u9002\u5408\u5e0c\u671b\u7cfb\u7edf\u5b66\u4e60\u4ece 0 \u5230 1 \u6784\u5efa\u4f01\u4e1a\u7ea7\u9879\u76ee\u7684\u5f00\u53d1\u8005\u3002<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/github.com\/fastapi\/full-stack-fastapi-template\">Full Stack FastAPI Template<\/a><\/strong>\uff1aFastAPI \u4f5c\u8005\u63d0\u4f9b\u7684\u5b98\u65b9\u5168\u6808\u9879\u76ee\u6a21\u677f\uff08\u5305\u542b\u524d\u7aef\u3001\u540e\u7aef\u3001PostgreSQL\u3001Docker\u3001CI\/CD\uff09\uff0c\u662f\u5b66\u4e60\u751f\u4ea7\u7ea7\u67b6\u6784\u7684\u7edd\u4f73\u53c2\u8003\u3002<\/li>\n\n\n\n<li><strong>\u535a\u5ba2\u6587\u7ae0\u63a8\u8350<\/strong>\uff1a<em>&#8220;Why FastAPI?&#8221;<\/em> (\u63a2\u8ba8 FastAPI \u4e0e Flask\/Django \u7684\u6027\u80fd\u4e0e\u67b6\u6784\u5bf9\u6bd4) \u4ee5\u53ca <em>&#8220;Dependency Injection in Python&#8221;<\/em> (\u6df1\u5165\u89e3\u6790\u4f9d\u8d56\u6ce8\u5165\u5728 Python \u4e2d\u7684\u6f14\u8fdb)\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udca1 \u4e0b\u4e00\u6b65\u884c\u52a8\u5efa\u8bae<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u60a8\u73b0\u5728\u5df2\u7ecf\u638c\u63e1\u4e86 FastAPI \u7684\u7406\u8bba\u5168\u666f\u3002\u5efa\u8bae\u60a8\u7684\u4e0b\u4e00\u6b65\u5b9e\u8df5\u662f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u52a8\u624b\u91cd\u6784<\/strong>\uff1a\u5c1d\u8bd5\u5c06\u4e00\u4e2a\u65e7\u7684 Flask\/Django \u63a5\u53e3\uff0c\u6216\u4e00\u4e2a\u7b80\u5355\u7684 Python \u811a\u672c\uff0c\u7528 FastAPI + Pydantic + Depends \u91cd\u5199\u3002<\/li>\n\n\n\n<li><strong>\u63a2\u7d22\u9ad8\u7ea7\u4e3b\u9898<\/strong>\uff1a\u9009\u62e9 <strong>\u6570\u636e\u5e93\u96c6\u6210 (SQLModel\/SQLAlchemy)<\/strong> \u6216 <strong>\u5b89\u5168\u8ba4\u8bc1 (JWT + OAuth2)<\/strong> 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