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+---
+title: Content-Range
+slug: Web/HTTP/Headers/Content-Range
+tags:
+ - 响应首部
+ - 超文本传输协议
+ - 首部
+translation_of: Web/HTTP/Headers/Content-Range
+---
+<div>{{HTTPSidebar}}</div>
+
+<p>在HTTP协议中,响应首部 <strong><code>Content-Range</code></strong> 显示的是一个数据片段在整个文件中的位置。</p>
+
+<table class="properties">
+ <tbody>
+ <tr>
+ <th scope="row">Header type</th>
+ <td>{{Glossary("Response header")}}</td>
+ </tr>
+ <tr>
+ <th scope="row">{{Glossary("Forbidden header name")}}</th>
+ <td>no</td>
+ </tr>
+ <tr>
+ <th scope="row">{{Glossary("Simple response header", "CORS-safelisted response-header")}}</th>
+ <td>no</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox">Content-Range: &lt;unit&gt; &lt;range-start&gt;-&lt;range-end&gt;/&lt;size&gt;
+Content-Range: &lt;unit&gt; &lt;range-start&gt;-&lt;range-end&gt;/*
+Content-Range: &lt;unit&gt; */&lt;size&gt;</pre>
+
+<h2 id="指令">指令</h2>
+
+<dl>
+ <dt>&lt;unit&gt;</dt>
+ <dd>数据区间所采用的单位。通常是字节(byte)。</dd>
+</dl>
+
+<dl>
+ <dt>&lt;range-start&gt;</dt>
+ <dd>一个整数,表示在给定单位下,区间的起始值。</dd>
+ <dt>&lt;range-end&gt;</dt>
+ <dd>一个整数,表示在给定单位下,区间的结束值。</dd>
+ <dt>&lt;size&gt;</dt>
+ <dd>整个文件的大小(如果大小未知则用"*"表示)。</dd>
+</dl>
+
+<h2 id="示例">示例</h2>
+
+<pre>Content-Range: bytes 200-1000/67589
+</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("7233", "Content-Range", "4.2")}}</td>
+ <td>Hypertext Transfer Protocol (HTTP/1.1): Range Requests</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.headers.Content-Range")}}</p>
+
+<h2 id="相关内容">相关内容</h2>
+
+<ul>
+ <li>{{HTTPHeader("If-Range")}}</li>
+ <li>{{HTTPHeader("Range")}}</li>
+ <li>{{HTTPHeader("Content-Type")}}</li>
+ <li>{{HTTPStatus("206")}} <code>Partial Content</code></li>
+ <li>{{HTTPStatus("416")}} <code>Range Not Satisfiable</code></li>
+</ul>