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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>
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