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<?xml version="1.0" encoding="ISO-8859-1"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!-- XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX This file is generated from xml source: DO NOT EDIT XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX --><title>Filters - Apache HTTP Server</title><link href="./style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /><link href="./style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /><link href="./style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link href="./images/favicon.ico" rel="shortcut icon" /></head><body id="manual-page" class="no-sidebar"><div id="page-header"><p class="menu"><a href="./mod/">Modules</a> | <a href="./mod/directives.html">Directives</a> | <a href="./faq/">FAQ</a> | <a href="./glossary.html">Glossary</a> | <a href="./sitemap.html">Sitemap</a></p><p class="apache">Apache HTTP Server Version 2.0</p><img alt="" src="./images/feather.gif" /></div><div class="up"><a href="./"><img title="<-" alt="<-" src="./images/left.gif" /></a></div><div id="path"><a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs-project/">Documentation</a> > <a href="./">Version 2.0</a></div><div id="page-content"><div id="preamble"><h1>Filters</h1><div class="toplang"><p><span>Available Languages: </span><a href="./en/filter.html" title="English"> en </a> |<a href="./es/filter.html" hreflang="es" rel="alternate" title="Espa駉l"> es </a> |<a href="./fr/filter.html" hreflang="fr" rel="alternate" title="Fran鏰is"> fr </a> |<a href="./ja/filter.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |<a href="./ko/filter.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |<a href="./ru/filter.html" hreflang="ru" rel="alternate" title="Russian"> ru </a></p></div> <p>This document describes the use of filters in Apache.</p> </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div><div class="section"><h2><a name="filters" id="filters">Filters</a></h2> <table class="related"><tr><th>Related Modules</th><th>Related Directives</th></tr><tr><td><ul><li><code class="module"><a href="./mod/mod_deflate.html">mod_deflate</a></code></li><li><code class="module"><a href="./mod/mod_ext_filter.html">mod_ext_filter</a></code></li><li><code class="module"><a href="./mod/mod_include.html">mod_include</a></code></li></ul></td><td><ul><li><code class="directive"><a href="./mod/mod_mime.html#addinputfilter">AddInputFilter</a></code></li><li><code class="directive"><a href="./mod/mod_mime.html#addoutputfilter">AddOutputFilter</a></code></li><li><code class="directive"><a href="./mod/mod_mime.html#removeinputfilter">RemoveInputFilter</a></code></li><li><code class="directive"><a href="./mod/mod_mime.html#removeoutputfilter">RemoveOutputFilter</a></code></li><li><code class="directive"><a href="./mod/mod_ext_filter.html#extfilterdefine">ExtFilterDefine</a></code></li><li><code class="directive"><a href="./mod/mod_ext_filter.html#extfilteroptions">ExtFilterOptions</a></code></li><li><code class="directive"><a href="./mod/core.html#setinputfilter">SetInputFilter</a></code></li><li><code class="directive"><a href="./mod/core.html#setoutputfilter">SetOutputFilter</a></code></li></ul></td></tr></table> <p>A <em>filter</em> is a process that is applied to data that is sent or received by the server. Data sent by clients to the server is processed by <em>input filters</em> while data sent by the server to the client is processed by <em>output filters</em>. Multiple filters can be applied to the data, and the order of the filters can be explicitly specified.</p> <p>Filters are used internally by Apache to perform functions such as chunking and byte-range request handling. In addition, modules can provide filters that are selectable using run-time configuration directives. The set of filters that apply to data can be manipulated with the <code class="directive"><a href="./mod/core.html#setinputfilter">SetInputFilter</a></code>, <code class="directive"><a href="./mod/core.html#setoutputfilter">SetOutputFilter</a></code>, <code class="directive"><a href="./mod/mod_mime.html#addinputfilter">AddInputFilter</a></code>, <code class="directive"><a href="./mod/mod_mime.html#addoutputfilter">AddOutputFilter</a></code>, <code class="directive"><a href="./mod/mod_mime.html#removeinputfilter">RemoveInputFilter</a></code>, and <code class="directive"><a href="./mod/mod_mime.html#removeoutputfilter">RemoveOutputFilter</a></code> directives.</p> <p>The following user-selectable filters are currently provided with the Apache HTTP Server distribution.</p> <dl> <dt>INCLUDES</dt> <dd>Server-Side Includes processing by <code class="module"><a href="./mod/mod_include.html">mod_include</a></code></dd> <dt>DEFLATE</dt> <dd>Compress output before sending it to the client using <code class="module"><a href="./mod/mod_deflate.html">mod_deflate</a></code> </dd> </dl> <p>In addition, the module <code class="module"><a href="./mod/mod_ext_filter.html">mod_ext_filter</a></code> allows for external programs to be defined as filters.</p> </div></div><div class="bottomlang"><p><span>Available Languages: </span><a href="./en/filter.html" title="English"> en </a> |<a href="./es/filter.html" hreflang="es" rel="alternate" title="Espa駉l"> es </a> |<a href="./fr/filter.html" hreflang="fr" rel="alternate" title="Fran鏰is"> fr </a> |<a href="./ja/filter.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |<a href="./ko/filter.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |<a href="./ru/filter.html" hreflang="ru" rel="alternate" title="Russian"> ru </a></p></div><div id="footer"><p class="apache">Copyright 1995-2005 The Apache Software Foundation or its licensors, as applicable.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p><p class="menu"><a href="./mod/">Modules</a> | <a href="./mod/directives.html">Directives</a> | <a href="./faq/">FAQ</a> | <a href="./glossary.html">Glossary</a> | <a href="./sitemap.html">Sitemap</a></p></div></body></html>⌨️ 快捷键说明
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