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<meta property="og:title" content="HTTP头部知识"/>
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<meta property="og:description" content="前述 本篇文章对HTTP头部选项做一个归类，并对常见的字段做一下介绍。 分类 通用头部 请求头部 相应头部 实体头部 下面按每个分类介绍一些主要的头部。 通用头部 Date Connection Cache-Control 请求头部 1，标识类 Host User-Agent 2，Accept类 Accept Accept-Encodeing Accept-Language Accept-Charset 3，缓存相关类 If-Match If-Modified-Sine If-Range 4，认证相关类 Authorization 5，其他 Range Referer 相应头部 1，标识相关 Allow Refresh Server 2，缓存相关 Age 其他在实体头部分类 3，认证相关 Proxy-Authenticate WWW-Authenticate …" />
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<meta name="twitter:description" content="前述 本篇文章对HTTP头部选项做一个归类，并对常见的字段做一下介绍。 分类 通用头部 请求头部 相应头部 实体头部 下面按每个分类介绍一些主要的头部。 通用头部 Date Connection Cache-Control 请求头部 1，标识类 Host User-Agent 2，Accept类 Accept Accept-Encodeing Accept-Language Accept-Charset 3，缓存相关类 If-Match If-Modified-Sine If-Range 4，认证相关类 Authorization 5，其他 Range Referer 相应头部 1，标识相关 Allow Refresh Server 2，缓存相关 Age 其他在实体头部分类 3，认证相关 Proxy-Authenticate WWW-Authenticate …">
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HTTP头部知识
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<div class="span8 offset2 article-content">
<h2>前述</h2>
<p>本篇文章对HTTP头部选项做一个归类，并对常见的字段做一下介绍。</p>
<h2>分类</h2>
<ul>
<li>
<p>通用头部</p>
</li>
<li>
<p>请求头部</p>
</li>
<li>
<p>相应头部</p>
</li>
<li>
<p>实体头部</p>
</li>
</ul>
<p>下面按每个分类介绍一些主要的头部。</p>
<h2>通用头部</h2>
<p><em>Date</em></p>
<p><em>Connection</em></p>
<p><em>Cache-Control</em></p>
<h2>请求头部</h2>
<p>1，标识类</p>
<p><em>Host</em></p>
<p><em>User-Agent</em></p>
<p>2，Accept类</p>
<p><em>Accept</em></p>
<p><em>Accept-Encodeing</em></p>
<p><em>Accept-Language</em></p>
<p><em>Accept-Charset</em></p>
<p>3，缓存相关类</p>
<p><em>If-Match</em></p>
<p><em>If-Modified-Sine</em></p>
<p><em>If-Range</em></p>
<p>4，认证相关类</p>
<p><em>Authorization</em></p>
<p>5，其他</p>
<p><em>Range</em></p>
<p><em>Referer</em></p>
<h2>相应头部</h2>
<p>1，标识相关</p>
<p><em>Allow</em></p>
<p><em>Refresh</em></p>
<p><em>Server</em></p>
<p>2，缓存相关</p>
<p><em>Age</em></p>
<p>其他在实体头部分类</p>
<p>3，认证相关</p>
<p><em>Proxy-Authenticate</em></p>
<p><em>WWW-Authenticate</em></p>
<p>4，代理相关</p>
<p><em>Location</em></p>
<p>5，其他</p>
<p><em>Set-Cookie</em></p>
<h2>实体请求头</h2>
<p>请求和实体都可以包含。</p>
<p>1，内容相关类</p>
<p><em>Content-Type</em></p>
<p><em>Content-Length</em></p>
<p><em>Content-Location</em></p>
<p>2，缓存相关</p>
<p>多用于响应头部。</p>
<p><em>Expire</em></p>
<p><em>Etag</em></p>
<p><em>Last-Modified</em></p>
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<h4>Published</h4>
<time itemprop="dateCreated" datetime="2017-04-02T00:00:00+08:00"> 4
2, 2017</time>
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<h4>Category</h4>
<a class="category-link"
href="./categories.html#http-ref">HTTP</a>
<h4>Tags</h4>
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<li><a href="./tags.html#http-ref">HTTP
<span>5</span>
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