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+---
+title: 502 Bad Gateway
+slug: Web/HTTP/Status/502
+tags:
+  - 响应状态码
+  - 服务器端错误
+  - 状态码
+translation_of: Web/HTTP/Status/502
+---
+<div>{{HTTPSidebar}}</div>
+
+<p><code><strong>502</strong></code><strong><code> Bad Gateway</code></strong> 是一种HTTP协议的服务器端错误状态代码，它表示作为网关或代理角色的服务器，从上游服务器（如tomcat、php-fpm）中接收到的响应是无效的。</p>
+
+<p>{{interwiki("wikipedia", "Gateway_(telecommunications)", "Gateway")}} （网关）在计算机网络体系中可以指代不同的设备，502 错误通常不是客户端能够修复的，而是需要由途径的Web服务器或者代理服务器对其进行修复。</p>
+
+<h2 id="状态">状态</h2>
+
+<pre class="syntaxbox">502 Bad Gateway</pre>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Title</th>
+  </tr>
+  <tr>
+   <td>{{RFC("7231", "502 Bad Gateway" , "6.6.3")}}</td>
+   <td>Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
+
+<p>{{Compat("http.status.502")}}</p>
+
+<h2 id="相关内容">相关内容</h2>
+
+<ul>
+ <li>{{HTTPStatus(504)}}</li>
+</ul>