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<html lang="en" data-color-mode="dark">
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<head>
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<meta charset="utf-8">
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<title>FastAPI备忘清单
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<title>FastAPI 备忘清单
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& fastapi cheatsheet & Quick Reference</title>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta description="FastAPI 是一个用于构建 API 的现代、快速（高性能）的 web 框架，使用 Python 3.6+ 并基于标准的 Python 类型提示。
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@ -26,16 +26,16 @@
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</button><script src="../js/dark.js?v=1.4.1"></script><a href="https://github.com/jaywcjlove/reference" class="" target="__blank"><svg viewBox="0 0 16 16" fill="currentColor" height="1em" width="1em"><path d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.012 8.012 0 0 0 16 8c0-4.42-3.58-8-8-8z"></path></svg></a></div></div></nav><div class="wrap h1body-exist max-container"><header class="wrap-header h1wrap"><h1 id="fastapi-备忘清单"><svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" fill="currentColor" height="1em" width="1em">
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<path d="M12 0C5.375 0 0 5.375 0 12c0 6.627 5.375 12 12 12 6.626 0 12-5.373 12-12 0-6.625-5.373-12-12-12zm-.624 21.62v-7.528H7.19L13.203 2.38v7.528h4.029L11.376 21.62z"></path>
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</svg>
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<a aria-hidden="true" tabindex="-1" href="#fastapi备忘清单"><span class="icon icon-link"></span></a>FastAPI备忘清单</h1><div class="wrap-body">
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<a aria-hidden="true" tabindex="-1" href="#fastapi-备忘清单"><span class="icon icon-link"></span></a>FastAPI 备忘清单</h1><div class="wrap-body">
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<p>FastAPI 是一个用于构建 API 的现代、快速（高性能）的 web 框架，使用 Python 3.6+ 并基于标准的 Python 类型提示。</p>
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</div></header><div class="menu-tocs"><div class="menu-btn"><svg aria-hidden="true" fill="currentColor" height="1em" width="1em" viewBox="0 0 16 16" version="1.1" data-view-component="true">
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</svg></div><div class="menu-modal"><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#入门">入门</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#最小程序">最小程序</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#查询参数">查询参数</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#路径参数">路径参数</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#请求体">请求体</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#调用">调用</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#查询参数和字符串校验">查询参数和字符串校验</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#参数列表">参数列表</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#参考">参考</a></div></div><div class="h1wrap-body"><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="入门"><a aria-hidden="true" tabindex="-1" href="#入门"><span class="icon icon-link"></span></a>入门</h2><div class="wrap-body">
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</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="最小程序"><a aria-hidden="true" tabindex="-1" href="#最小程序"><span class="icon icon-link"></span></a>最小程序</h3><div class="wrap-body">
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<p>下面代码会直接启动http服务，也可以使用uvicorn main:app --reload</p>
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<p>下面代码会直接启动http服务，也可以使用 <code>uvicorn main:app --reload</code></p>
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<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token keyword">from</span> fastapi <span class="token keyword">import</span> FastAPI
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</span><span class="code-line"><span class="token keyword">import</span> uvicorn
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</span><span class="code-line">
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@ -51,22 +51,27 @@
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</span></code></pre>
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</div></div></div><div class="wrap h3body-not-exist col-span-2 row-span-2"><div class="wrap-header h3wrap"><h3 id="查询参数"><a aria-hidden="true" tabindex="-1" href="#查询参数"><span class="icon icon-link"></span></a>查询参数</h3><div class="wrap-body">
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<!--rehype:wrap-class=col-span-2 row-span-2-->
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<p>带默认值的查询参数 <a href="http://127.0.0.1:8000/items/?skip=0&limit=2">http://127.0.0.1:8000/items/?skip=0&limit=2</a></p>
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<pre class="language-python"><code class="language-python code-highlight"><span class="code-line">fake_items_db <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">{</span><span class="token string">"item_name"</span><span class="token punctuation">:</span> <span class="token string">"Foo"</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span><span class="token string">"item_name"</span><span class="token punctuation">:</span> <span class="token string">"Bar"</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span><span class="token string">"item_name"</span><span class="token punctuation">:</span> <span class="token string">"Baz"</span><span class="token punctuation">}</span><span class="token punctuation">]</span>
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<p>带默认值的查询参数</p>
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<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token comment"># http://127.0.0.1:8000/items/?skip=0&limit=2</span>
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</span><span class="code-line">fake_items_db <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">{</span><span class="token string">"item_name"</span><span class="token punctuation">:</span> <span class="token string">"Foo"</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span><span class="token string">"item_name"</span><span class="token punctuation">:</span> <span class="token string">"Bar"</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span><span class="token string">"item_name"</span><span class="token punctuation">:</span> <span class="token string">"Baz"</span><span class="token punctuation">}</span><span class="token punctuation">]</span>
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</span><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/items/"</span><span class="token punctuation">)</span>
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</span><span class="code-line"><span class="token keyword">async</span> <span class="token keyword">def</span> <span class="token function">read_item</span><span class="token punctuation">(</span>skip<span class="token punctuation">:</span> <span class="token builtin">int</span> <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">,</span> limit<span class="token punctuation">:</span> <span class="token builtin">int</span> <span class="token operator">=</span> <span class="token number">10</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
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</span><span class="code-line"> <span class="token keyword">return</span> fake_items_db<span class="token punctuation">[</span>skip<span class="token punctuation">:</span> skip <span class="token operator">+</span> limit<span class="token punctuation">]</span>
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</span></code></pre>
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<p>可选查询参数 <a href="http://127.0.0.1:8000/items/1?q=admin">http://127.0.0.1:8000/items/1?q=admin</a></p>
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<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token keyword">from</span> typing <span class="token keyword">import</span> Union
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<p>可选查询参数</p>
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<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token comment"># http://127.0.0.1:8000/items/1?q=admin</span>
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</span><span class="code-line"><span class="token keyword">from</span> typing <span class="token keyword">import</span> Union
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</span><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/items/{item_id}"</span><span class="token punctuation">)</span>
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</span><span class="code-line"><span class="token keyword">async</span> <span class="token keyword">def</span> <span class="token function">read_item</span><span class="token punctuation">(</span>item_id<span class="token punctuation">:</span> <span class="token builtin">str</span><span class="token punctuation">,</span> q<span class="token punctuation">:</span> Union<span class="token punctuation">[</span><span class="token builtin">str</span><span class="token punctuation">,</span> <span class="token boolean">None</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token boolean">None</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
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</span><span class="code-line"> <span class="token keyword">if</span> q<span class="token punctuation">:</span>
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</span><span class="code-line"> <span class="token keyword">return</span> <span class="token punctuation">{</span><span class="token string">"item_id"</span><span class="token punctuation">:</span> item_id<span class="token punctuation">,</span> <span class="token string">"q"</span><span class="token punctuation">:</span> q<span class="token punctuation">}</span>
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</span><span class="code-line"> <span class="token keyword">return</span> <span class="token punctuation">{</span><span class="token string">"item_id"</span><span class="token punctuation">:</span> item_id<span class="token punctuation">}</span>
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</span></code></pre>
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<p>多路径多查询参数 <a href="http://127.0.0.1:8000/users/1/items/2">http://127.0.0.1:8000/users/1/items/2</a> or <a href="http://127.0.0.1:8000/users/1/items/2?q=query&short=true">http://127.0.0.1:8000/users/1/items/2?q=query&short=true</a></p>
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<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/users/{user_id}/items/{item_id}"</span><span class="token punctuation">)</span>
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<p>多路径多查询参数</p>
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<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token comment"># http://127.0.0.1:8000/users/1/items/2</span>
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</span><span class="code-line"><span class="token comment"># or </span>
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</span><span class="code-line"><span class="token comment"># http://127.0.0.1:8000/users/1/items/2?q=query&short=true</span>
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</span><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/users/{user_id}/items/{item_id}"</span><span class="token punctuation">)</span>
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</span><span class="code-line"><span class="token keyword">async</span> <span class="token keyword">def</span> <span class="token function">read_user_item</span><span class="token punctuation">(</span>
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</span><span class="code-line"> user_id<span class="token punctuation">:</span> <span class="token builtin">int</span><span class="token punctuation">,</span> item_id<span class="token punctuation">:</span> <span class="token builtin">str</span><span class="token punctuation">,</span> q<span class="token punctuation">:</span> Union<span class="token punctuation">[</span><span class="token builtin">str</span><span class="token punctuation">,</span> <span class="token boolean">None</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token boolean">None</span><span class="token punctuation">,</span> short<span class="token punctuation">:</span> <span class="token builtin">bool</span> <span class="token operator">=</span> <span class="token boolean">False</span>
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</span><span class="code-line"><span class="token punctuation">)</span><span class="token punctuation">:</span>
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@ -79,30 +84,35 @@
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</span><span class="code-line"> <span class="token punctuation">)</span>
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</span><span class="code-line"> <span class="token keyword">return</span> item
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</span></code></pre>
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<p>必需查询参数 <a href="http://127.0.0.1:8000/items/123?needy=yes">http://127.0.0.1:8000/items/123?needy=yes</a></p>
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<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/items/{item_id}"</span><span class="token punctuation">)</span>
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<p>必需查询参数</p>
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<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token comment"># http://127.0.0.1:8000/items/123?needy=yes</span>
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</span><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/items/{item_id}"</span><span class="token punctuation">)</span>
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</span><span class="code-line"><span class="token keyword">async</span> <span class="token keyword">def</span> <span class="token function">read_user_item</span><span class="token punctuation">(</span>item_id<span class="token punctuation">:</span> <span class="token builtin">str</span><span class="token punctuation">,</span> needy<span class="token punctuation">:</span> <span class="token builtin">str</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
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</span><span class="code-line"> item <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token string">"item_id"</span><span class="token punctuation">:</span> item_id<span class="token punctuation">,</span> <span class="token string">"needy"</span><span class="token punctuation">:</span> needy<span class="token punctuation">}</span>
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||||
</span><span class="code-line"> <span class="token keyword">return</span> item
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||||
</span></code></pre>
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</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="路径参数"><a aria-hidden="true" tabindex="-1" href="#路径参数"><span class="icon icon-link"></span></a>路径参数</h3><div class="wrap-body">
|
||||
<p>最基本的路径参数 <a href="http://127.0.0.1:8000/items/1">http://127.0.0.1:8000/items/1</a></p>
|
||||
<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/items/{item_id}"</span><span class="token punctuation">)</span>
|
||||
<p>最基本的路径参数</p>
|
||||
<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token comment"># <http://127.0.0.1:8000/items/1></span>
|
||||
</span><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/items/{item_id}"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token keyword">async</span> <span class="token keyword">def</span> <span class="token function">read_item</span><span class="token punctuation">(</span>item_id<span class="token punctuation">)</span><span class="token punctuation">:</span>
|
||||
</span><span class="code-line"> <span class="token keyword">return</span> <span class="token punctuation">{</span><span class="token string">"item_id"</span><span class="token punctuation">:</span> item_id<span class="token punctuation">}</span> <span class="token comment"># item_id自定义</span>
|
||||
</span></code></pre>
|
||||
<p>多个路径参数 <a href="http://127.0.0.1:8000/items/1/2">http://127.0.0.1:8000/items/1/2</a></p>
|
||||
<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/items/{item_id}/{user_id}"</span><span class="token punctuation">)</span>
|
||||
<p>多个路径参数</p>
|
||||
<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token comment"># <http://127.0.0.1:8000/items/1/2></span>
|
||||
</span><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/items/{item_id}/{user_id}"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token keyword">async</span> <span class="token keyword">def</span> <span class="token function">read_item</span><span class="token punctuation">(</span>item_id<span class="token punctuation">,</span> user_id<span class="token punctuation">)</span><span class="token punctuation">:</span>
|
||||
</span><span class="code-line"> <span class="token keyword">return</span> <span class="token punctuation">{</span><span class="token string">"item_id"</span><span class="token punctuation">:</span> item_id<span class="token punctuation">,</span> <span class="token string">"user_id"</span><span class="token punctuation">:</span> user_id<span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
<p>有类型的路径参数 <a href="http://127.0.0.1:8000/items/1">http://127.0.0.1:8000/items/1</a></p>
|
||||
<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/items/{item_id}"</span><span class="token punctuation">)</span>
|
||||
<p>有类型的路径参数</p>
|
||||
<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token comment"># <http://127.0.0.1:8000/items/1></span>
|
||||
</span><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/items/{item_id}"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token keyword">async</span> <span class="token keyword">def</span> <span class="token function">read_item</span><span class="token punctuation">(</span>item_id<span class="token punctuation">:</span> <span class="token builtin">int</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
|
||||
</span><span class="code-line"> <span class="token keyword">return</span> <span class="token punctuation">{</span><span class="token string">"item_id"</span><span class="token punctuation">:</span> item_id<span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
<p>文件路径参数 <a href="http://127.0.0.1:8000/file//home/my/my.txt">http://127.0.0.1:8000/file//home/my/my.txt</a></p>
|
||||
<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/file/{file_path:path}"</span><span class="token punctuation">)</span>
|
||||
<p>文件路径参数</p>
|
||||
<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token comment"># <http://127.0.0.1:8000/file//home/my/my.txt></span>
|
||||
</span><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/file/{file_path:path}"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token keyword">async</span> <span class="token keyword">def</span> <span class="token function">read_item</span><span class="token punctuation">(</span>file_path<span class="token punctuation">)</span><span class="token punctuation">:</span>
|
||||
</span><span class="code-line"> <span class="token keyword">return</span> <span class="token punctuation">{</span><span class="token string">"file_path"</span><span class="token punctuation">:</span> file_path<span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
@ -131,7 +141,8 @@
|
||||
</span></span><span class="code-line"><span class="token string"> "tax": 0
|
||||
</span></span><span class="code-line"><span class="token string">}'</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-exist"><div class="wrap-header h3wrap"><h3 id="查询参数和字符串校验"><a aria-hidden="true" tabindex="-1" href="#查询参数和字符串校验"><span class="icon icon-link"></span></a>查询参数和字符串校验</h3><div class="wrap-body">
|
||||
</div></div></div><div class="wrap h3body-exist col-span-2"><div class="wrap-header h3wrap"><h3 id="查询参数和字符串校验"><a aria-hidden="true" tabindex="-1" href="#查询参数和字符串校验"><span class="icon icon-link"></span></a>查询参数和字符串校验</h3><div class="wrap-body">
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
<pre class="language-python"><code class="language-python code-highlight"><span class="code-line"><span class="token keyword">from</span> fastapi <span class="token keyword">import</span> Query
|
||||
</span><span class="code-line"><span class="token decorator annotation punctuation">@app<span class="token punctuation">.</span>get</span><span class="token punctuation">(</span><span class="token string">"/items/"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token keyword">async</span> <span class="token keyword">def</span> <span class="token function">read_items</span><span class="token punctuation">(</span>q<span class="token punctuation">:</span> Union<span class="token punctuation">[</span><span class="token builtin">str</span><span class="token punctuation">,</span> <span class="token boolean">None</span><span class="token punctuation">]</span> <span class="token operator">=</span> Query<span class="token punctuation">(</span>default<span class="token operator">=</span><span class="token boolean">None</span><span class="token punctuation">,</span> max_length<span class="token operator">=</span><span class="token number">50</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
|
||||
|
||||
Reference in New Issue
Block a user