{"id":116,"date":"2026-06-14T09:57:02","date_gmt":"2026-06-14T01:57:02","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=116"},"modified":"2026-06-14T09:57:02","modified_gmt":"2026-06-14T01:57:02","slug":"fastapi-%e5%9f%ba%e6%9c%ac%e8%b7%af%e7%94%b1","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2026\/06\/14\/fastapi-%e5%9f%ba%e6%9c%ac%e8%b7%af%e7%94%b1\/","title":{"rendered":"FastAPI \u57fa\u672c\u8def\u7531"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5728 FastAPI \u4e2d\uff0c<strong>\u8def\u7531\uff08Routing\uff09<\/strong>\uff08\u5b98\u65b9\u6587\u6863\u79f0\u4e4b\u4e3a\u201c\u8def\u5f84\u64cd\u4f5c\u201d Path Operation\uff09\u662f\u5b9a\u4e49 API \u5982\u4f55\u63a5\u6536 HTTP \u8bf7\u6c42\u5e76\u8fd4\u56de\u54cd\u5e94\u7684\u6838\u5fc3\u673a\u5236\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">FastAPI \u7684\u8def\u7531\u8bbe\u8ba1\u6781\u5176\u76f4\u89c2\uff1a<strong>HTTP \u65b9\u6cd5\u88c5\u9970\u5668 + \u5e26\u6709\u7c7b\u578b\u63d0\u793a\u7684 Python \u51fd\u6570<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u9762\u6211\u5c06\u4ece<strong>\u57fa\u7840\u7528\u6cd5<\/strong>\u3001<strong>\u53c2\u6570\u4f20\u9012<\/strong>\u5230<strong>\u5e38\u89c1\u9677\u9631<\/strong>\uff0c\u4e3a\u4f60\u7cfb\u7edf\u68b3\u7406 FastAPI \u7684\u57fa\u672c\u8def\u7531\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u3001 \u6838\u5fc3\u6982\u5ff5\uff1a\u88c5\u9970\u5668\u4e0e\u51fd\u6570<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 FastAPI \u4e2d\uff0c\u8def\u7531\u7531\u4e24\u90e8\u5206\u7ec4\u6210\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u8def\u5f84\u64cd\u4f5c\u88c5\u9970\u5668<\/strong>\uff1a\u544a\u8bc9 FastAPI \u76d1\u542c\u54ea\u4e2a HTTP \u65b9\u6cd5\uff08\u5982 <code>GET<\/code>, <code>POST<\/code>\uff09\u548c\u54ea\u4e2a URL \u8def\u5f84\uff08\u5982 <code>\"\/items\"<\/code>\uff09\u3002<\/li>\n\n\n\n<li><strong>\u8def\u5f84\u64cd\u4f5c\u51fd\u6570<\/strong>\uff1a\u5f53\u8bf7\u6c42\u5339\u914d\u5230\u8be5\u8def\u5f84\u548c\u65b9\u6cd5\u65f6\uff0c\u5b9e\u9645\u6267\u884c\u7684 Python \u51fd\u6570\u3002<\/li>\n<\/ol>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">from fastapi import FastAPI\n\napp = FastAPI()\n\n# 1. \u88c5\u9970\u5668\uff1a\u76d1\u542c GET \u8bf7\u6c42\uff0c\u8def\u5f84\u4e3a &quot;\/&quot;\n@app.get(&quot;\/&quot;)\n# 2. \u51fd\u6570\uff1a\u5904\u7406\u8bf7\u6c42\u5e76\u8fd4\u56de\u6570\u636e (FastAPI \u4f1a\u81ea\u52a8\u5c06\u5176\u8f6c\u4e3a JSON)\ndef read_root():\n    return {&quot;message&quot;: &quot;Hello World&quot;}<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">FastAPI \u652f\u6301\u6240\u6709\u6807\u51c6\u7684 HTTP \u65b9\u6cd5\uff1a<code>@app.get()<\/code>, <code>@app.post()<\/code>, <code>@app.put()<\/code>, <code>@app.delete()<\/code>, <code>@app.patch()<\/code>, <code>@app.options()<\/code>, <code>@app.head()<\/code>, <code>@app.trace()<\/code>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8c\u3001 \u8def\u7531\u7684\u4e09\u5927\u53c2\u6570\u4f20\u9012\u65b9\u5f0f<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1. \u8def\u5f84\u53c2\u6570 (Path Parameters)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528\u4e8e\u6355\u83b7 URL \u8def\u5f84\u4e2d\u7684\u52a8\u6001\u90e8\u5206\u3002\u76f4\u63a5\u5728\u51fd\u6570\u53c2\u6570\u4e2d\u58f0\u660e\uff0c\u5e76<strong>\u5fc5\u987b\u63d0\u4f9b\u7c7b\u578b\u63d0\u793a<\/strong>\uff0cFastAPI \u4f1a\u81ea\u52a8\u8fdb\u884c\u7c7b\u578b\u8f6c\u6362\u548c\u9a8c\u8bc1\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">@app.get(&quot;\/items\/{item_id}&quot;)\ndef get_item(item_id: int):\n    # \u5982\u679c\u8bbf\u95ee \/items\/abc\uff0cFastAPI \u4f1a\u81ea\u52a8\u8fd4\u56de 422 \u9519\u8bef\uff0c\u56e0\u4e3a &quot;abc&quot; \u65e0\u6cd5\u8f6c\u4e3a int\n    return {&quot;item_id&quot;: item_id, &quot;type&quot;: type(item_id).__name__}\n\n# \u652f\u6301\u679a\u4e3e\u7c7b\u578b\u9650\u5236 (Python 3.8+ \u63a8\u8350\u4f7f\u7528 Enum \u6216 Literal)\nfrom typing import Literal\n\n@app.get(&quot;\/models\/{model_name}&quot;)\ndef get_model(model_name: Literal[&quot;alexnet&quot;, &quot;resnet&quot;, &quot;lenet&quot;]):\n    return {&quot;model_name&quot;: model_name}<\/code><\/pre><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">2. \u67e5\u8be2\u53c2\u6570 (Query Parameters)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u51fd\u6570\u53c2\u6570<strong>\u4e0d\u662f<\/strong>\u8def\u5f84\u53c2\u6570\u7684\u4e00\u90e8\u5206\u65f6\uff0cFastAPI \u4f1a\u81ea\u52a8\u5c06\u5b83\u4eec\u89e3\u91ca\u4e3a\u67e5\u8be2\u53c2\u6570\uff08\u5373 URL \u4e2d <code>?<\/code> \u540e\u9762\u7684 <code>key=value<\/code> \u90e8\u5206\uff09\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># \u8bbf\u95ee\u793a\u4f8b: \/items\/?skip=0&amp;limit=10\n@app.get(&quot;\/items\/&quot;)\ndef list_items(skip: int = 0, limit: int = 10):\n    return {&quot;skip&quot;: skip, &quot;limit&quot;: limit}\n\n# \u53ef\u9009\u7684\u67e5\u8be2\u53c2\u6570\uff1a\u4f7f\u7528 str | None (\u6216 Optional[str]) \u5e76\u8d4b\u4e88\u9ed8\u8ba4\u503c None\n@app.get(&quot;\/search\/&quot;)\ndef search(q: str | None = None):\n    if q:\n        return {&quot;results&quot;: f&quot;\u641c\u7d22\u5173\u952e\u8bcd: {q}&quot;}\n    return {&quot;results&quot;: &quot;\u6ca1\u6709\u63d0\u4f9b\u641c\u7d22\u5173\u952e\u8bcd&quot;}<\/code><\/pre><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">3. \u8def\u5f84\u53c2\u6570 + \u67e5\u8be2\u53c2\u6570\u6df7\u5408\u4f7f\u7528<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">FastAPI \u80fd\u5b8c\u7f8e\u533a\u5206\u5b83\u4eec\uff1a\u5728\u8def\u5f84\u4e2d\u58f0\u660e\u7684\u662f\u8def\u5f84\u53c2\u6570\uff0c\u672a\u5728\u8def\u5f84\u4e2d\u58f0\u660e\u7684\u662f\u67e5\u8be2\u53c2\u6570\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># \u8bbf\u95ee\u793a\u4f8b: \/users\/123\/items\/?status=active\n@app.get(&quot;\/users\/{user_id}\/items\/&quot;)\ndef get_user_items(user_id: int, status: str | None = None):\n    return {&quot;user_id&quot;: user_id, &quot;status&quot;: status}<\/code><\/pre><\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e09\u3001 \u8bf7\u6c42\u4f53 (Request Body) \u57fa\u7840<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u867d\u7136\u4e25\u683c\u6765\u8bf4\u5c5e\u4e8e\u201c\u6570\u636e\u9a8c\u8bc1\u201d\u8303\u7574\uff0c\u4f46\u5b83\u662f POST\/PUT \u8def\u7531\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u5f53\u4f60\u9700\u8981\u63a5\u6536\u590d\u6742\u7684 JSON \u6570\u636e\u65f6\uff0c\u4f7f\u7528 <strong>Pydantic \u6a21\u578b<\/strong>\u4f5c\u4e3a\u51fd\u6570\u53c2\u6570\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><span>12<\/span><span>13<\/span><span>14<\/span><span>15<\/span><span>16<\/span><span>17<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">from pydantic import BaseModel\n\n# 1. \u5b9a\u4e49\u6570\u636e\u6a21\u578b\nclass Item(BaseModel):\n    name: str\n    price: float\n    is_offer: bool | None = None\n\n# 2. \u5728 POST \u8def\u7531\u4e2d\u4f7f\u7528\u8be5\u6a21\u578b\u4f5c\u4e3a\u53c2\u6570\n@app.post(&quot;\/items\/&quot;)\ndef create_item(item: Item):\n    # FastAPI \u4f1a\u81ea\u52a8\u89e3\u6790\u8bf7\u6c42\u4f53\u4e2d\u7684 JSON\uff0c\u9a8c\u8bc1\u7c7b\u578b\uff0c\u5e76\u8f6c\u6362\u4e3a Item \u5bf9\u8c61\n    return {\n        &quot;item_name&quot;: item.name,\n        &quot;item_price&quot;: item.price,\n        &quot;message&quot;: &quot;\u521b\u5efa\u6210\u529f&quot;\n    }<\/code><\/pre><\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u56db\u3001 \u26a0\ufe0f \u81f4\u547d\u9677\u9631\uff1a\u8def\u7531\u58f0\u660e\u987a\u5e8f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">FastAPI \u662f<strong>\u4ece\u4e0a\u5230\u4e0b<\/strong>\u5339\u914d\u8def\u7531\u7684\u3002\u4e00\u65e6\u627e\u5230\u5339\u914d\u7684\u8def\u5f84\uff0c\u5c31\u4f1a\u505c\u6b62\u67e5\u627e\u3002\u56e0\u6b64\uff0c<strong>\u5177\u4f53\u7684\u8def\u7531\u5fc5\u987b\u653e\u5728\u901a\u7528\u7684\u8def\u7531\u4e4b\u524d<\/strong>\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># \u274c \u9519\u8bef\u987a\u5e8f\n@app.get(&quot;\/users\/me&quot;)\ndef read_user_me():\n    return {&quot;user&quot;: &quot;the current user&quot;}\n\n@app.get(&quot;\/users\/{user_id}&quot;)\ndef read_user(user_id: str):\n    return {&quot;user_id&quot;: user_id}\n\n# \u5982\u679c\u5148\u5b9a\u4e49 \/users\/me\uff0c\u5f53\u8bbf\u95ee \/users\/me \u65f6\uff0c\n# FastAPI \u4f1a\u5339\u914d\u5230 \/users\/{user_id}\uff0c\u628a &quot;me&quot; \u5f53\u4f5c user_id \u8fd4\u56de\uff01<\/code><\/pre><\/div><\/div>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\"># \u2705 \u6b63\u786e\u987a\u5e8f\uff1a\u5c06\u56fa\u5b9a\u8def\u5f84\u653e\u5728\u52a8\u6001\u8def\u5f84\u4e4b\u524d\n@app.get(&quot;\/users\/me&quot;)\ndef read_user_me():\n    return {&quot;user&quot;: &quot;the current user&quot;}\n\n@app.get(&quot;\/users\/{user_id}&quot;)\ndef read_user(user_id: str):\n    return {&quot;user_id&quot;: user_id}<\/code><\/pre><\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e94\u3001 \u8fdb\u9636\uff1a\u4f7f\u7528 <code>APIRouter<\/code> \u62c6\u5206\u8def\u7531 (\u6700\u4f73\u5b9e\u8df5)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u5e94\u7528\u53d8\u5927\u65f6\uff0c\u628a\u6240\u6709\u8def\u7531\u5199\u5728 <code>main.py<\/code> \u4e2d\u4f1a\u5bfc\u81f4\u6587\u4ef6\u81c3\u80bf\u3002FastAPI \u63d0\u4f9b\u4e86 <code>APIRouter<\/code>\uff0c\u8ba9\u4f60\u53ef\u4ee5\u5c06\u8def\u7531\u62c6\u5206\u5230\u4e0d\u540c\u7684\u6587\u4ef6\u4e2d\uff0c\u6700\u540e\u518d\u6302\u8f7d\u5230\u4e3b\u5e94\u7528\u4e0a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. \u521b\u5efa\u8def\u7531\u6a21\u5757 <code>routers\/users.py<\/code><\/strong>\uff1a<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><span>12<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">from fastapi import APIRouter\n\n# \u521b\u5efa\u4e00\u4e2a\u8def\u7531\u5668\u5b9e\u4f8b\nrouter = APIRouter()\n\n@router.get(&quot;\/&quot;, tags=[&quot;users&quot;])\ndef get_users():\n    return [{&quot;name&quot;: &quot;Alice&quot;}, {&quot;name&quot;: &quot;Bob&quot;}]\n\n@router.get(&quot;\/{user_id}&quot;, tags=[&quot;users&quot;])\ndef get_user(user_id: int):\n    return {&quot;user_id&quot;: user_id}<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. \u5728\u4e3b\u5e94\u7528 <code>main.py<\/code> \u4e2d\u6302\u8f7d<\/strong>\uff1a<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">from fastapi import FastAPI\nfrom routers import users # \u5047\u8bbe routers \u6587\u4ef6\u5939\u4e0b\u6709 __init__.py\n\napp = FastAPI()\n\n# \u5c06 users \u8def\u7531\u5668\u7684\u6240\u6709\u8def\u7531\u6302\u8f7d\u5230 \/users \u524d\u7f00\u4e0b\napp.include_router(users.router, prefix=&quot;\/users&quot;)\n\n@app.get(&quot;\/&quot;)\ndef root():\n    return {&quot;message&quot;: &quot;\u4e3b\u5e94\u7528&quot;}<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\u6548\u679c\uff1a<code>\/users\/<\/code> \u548c <code>\/users\/{user_id}<\/code> \u73b0\u5728\u90fd\u53ef\u4ee5\u6b63\u5e38\u8bbf\u95ee\uff0c\u5e76\u4e14\u5728 <code>\/docs<\/code> \u4e2d\u4f1a\u88ab\u81ea\u52a8\u5f52\u7c7b\u5230 &#8220;users&#8221; \u6807\u7b7e\u4e0b\u3002<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3\uff1aFastAPI \u8def\u7531\u901f\u67e5\u8868<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u9700\u6c42<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u5b9e\u73b0\u65b9\u5f0f<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u793a\u4f8b URL<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">\u7b80\u5355\u8fd4\u56de\u6570\u636e<\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>@app.get(\"\/path\")<\/code> + <code>return dict<\/code><\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>\/<\/code><\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">URL \u4e2d\u7684\u52a8\u6001\u53d8\u91cf<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u51fd\u6570\u53c2\u6570\u540d\u4e0e <code>{}<\/code> \u5185\u540d\u79f0\u4e00\u81f4 + \u7c7b\u578b\u63d0\u793a<\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>\/items\/42<\/code> (<code>item_id: int<\/code>)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">URL <code>?<\/code> \u540e\u7684\u53c2\u6570<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u51fd\u6570\u53c2\u6570\u540d\u4e0d\u5728\u8def\u5f84\u4e2d + \u9ed8\u8ba4\u503c\/\u7c7b\u578b\u63d0\u793a<\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>\/items\/?skip=0<\/code> (<code>skip: int = 0<\/code>)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u63a5\u6536 JSON \u6570\u636e<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5b9a\u4e49 <code>BaseModel<\/code> + \u4f5c\u4e3a\u51fd\u6570\u53c2\u6570<\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>POST \/items\/<\/code> (<code>item: Item<\/code>)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u7ec4\u7ec7\u5927\u578b\u9879\u76ee<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4f7f\u7528 <code>APIRouter<\/code> \u62c6\u5206\u6587\u4ef6\u5e76 <code>include_router<\/code><\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>prefix=\"\/api\/v1\"<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u638c\u63e1\u4e86\u8fd9\u4e9b\uff0c\u4f60\u5c31\u5df2\u7ecf\u80fd\u6784\u5efa\u51fa 80% \u7684\u5e38\u89c4 RESTful API \u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f60\u60f3\u63a5\u4e0b\u6765\u4e86\u89e3<strong>\u5982\u4f55\u5bf9\u8def\u7531\u8fdb\u884c\u6743\u9650\u6821\u9a8c\uff08\u4f9d\u8d56\u6ce8\u5165\uff09<\/strong>\uff0c\u8fd8\u662f<strong>\u5982\u4f55\u5904\u7406\u6587\u4ef6\u4e0a\u4f20<\/strong>\uff1f\u968f\u65f6\u544a\u8bc9\u6211\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 FastAPI \u4e2d\uff0c\u8def\u7531\uff08Routing\uff09\uff08\u5b98\u65b9\u6587\u6863\u79f0\u4e4b&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-116","post","type-post","status-publish","format-standard","hentry","category-fastapi-"],"_links":{"self":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/116","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/comments?post=116"}],"version-history":[{"count":1,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/116\/revisions"}],"predecessor-version":[{"id":117,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/116\/revisions\/117"}],"wp:attachment":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/media?parent=116"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/categories?post=116"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/tags?post=116"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}