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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>mod_alias - 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><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> > <a href="./">Modules</a></div><div id="page-content"><div id="preamble"><h1>Apache Module mod_alias</h1><div class="toplang"><p><span>Available Languages: </span><a href="../en/mod/mod_alias.html" title="English"> en </a> |<a href="../ja/mod/mod_alias.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |<a href="../ko/mod/mod_alias.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p></div><table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Provides for mapping different parts of the host filesystem in the document tree and for URL redirection</td></tr><tr><th><a href="module-dict.html#Status">Status:</a></th><td>Base</td></tr><tr><th><a href="module-dict.html#ModuleIdentifier">Module營dentifier:</a></th><td>alias_module</td></tr><tr><th><a href="module-dict.html#SourceFile">Source燜ile:</a></th><td>mod_alias.c</td></tr></table><h3>Summary</h3> <p>The directives contained in this module allow for manipulation and control of URLs as requests arrive at the server. The <code class="directive"><a href="#alias">Alias</a></code> and <code class="directive"><a href="#scriptalias">ScriptAlias</a></code> directives are used to map between URLs and filesystem paths. This allows for content which is not directly under the <code class="directive"><a href="../mod/core.html#documentroot">DocumentRoot</a></code> served as part of the web document tree. The <code class="directive"><a href="#scriptalias">ScriptAlias</a></code> directive has the additional effect of marking the target directory as containing only CGI scripts.</p> <p>The <code class="directive"><a href="#redirect">Redirect</a></code> directives are used to instruct clients to make a new request with a different URL. They are often used when a resource has moved to a new location.</p> <p><code class="module"><a href="../mod/mod_alias.html">mod_alias</a></code> is designed to handle simple URL manipulation tasks. For more complicated tasks such as manipulating the query string, use the tools provided by <code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code>.</p></div><div id="quickview"><h3 class="directives">Directives</h3><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#alias">Alias</a></li><li><img alt="" src="../images/down.gif" /> <a href="#aliasmatch">AliasMatch</a></li><li><img alt="" src="../images/down.gif" /> <a href="#redirect">Redirect</a></li><li><img alt="" src="../images/down.gif" /> <a href="#redirectmatch">RedirectMatch</a></li><li><img alt="" src="../images/down.gif" /> <a href="#redirectpermanent">RedirectPermanent</a></li><li><img alt="" src="../images/down.gif" /> <a href="#redirecttemp">RedirectTemp</a></li><li><img alt="" src="../images/down.gif" /> <a href="#scriptalias">ScriptAlias</a></li><li><img alt="" src="../images/down.gif" /> <a href="#scriptaliasmatch">ScriptAliasMatch</a></li></ul><h3>Topics</h3><ul id="topics"><li><img alt="" src="../images/down.gif" /> <a href="#order">Order of Processing</a></li></ul><h3>See also</h3><ul class="seealso"><li><code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code></li><li><a href="../urlmapping.html">Mapping URLs to the filesystem</a></li></ul></div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="section"><h2><a name="order" id="order">Order of Processing</a></h2><p>Aliases and Redirects occuring in different contexts are processedlike other directives according to standard <a href="../sections.html#mergin">merging rules</a>. But when multipleAliases or Redirects occur in the same context (for example, in thesame <code class="directive"><a href="../mod/core.html#virtualhost"><VirtualHost></a></code>section) they are processed in a particular order.</p><p>First, all Redirects are processed before Aliases are processed,and therefore a request that matches a <code class="directive"><a href="#redirect">Redirect</a></code> or <code class="directive"><a href="#redirectmatch">RedirectMatch</a></code> will never have Aliasesapplied. Second, the Aliases and Redirects are processed in the orderthey appear in the configuration files, with the first match takingprecedence.</p><p>For this reason, when two or more of these directives apply to thesame sub-path, you must list the most specific path first in order forall the directives to have an effect. For example, the followingconfiguration will work as expected:</p><div class="example"><p><code>Alias /foo/bar /baz<br />Alias /foo /gaq</code></p></div><p>But if the above two directives were reversed in order, the<code>/foo</code> <code class="directive"><a href="#alias">Alias</a></code>would always match before the <code>/foo/bar</code> <code class="directive"><a href="#alias">Alias</a></code>, so the latter directive would beignored.</p></div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="directive-section"><h2><a name="Alias" id="Alias">Alias</a> <a name="alias" id="alias">Directive</a></h2><table class="directive"><tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Maps URLs to filesystem locations</td></tr><tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>Alias <var>URL-path</var><var>file-path</var>|<var>directory-path</var></code></td></tr><tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr><tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr><tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_alias</td></tr></table> <p>The <code class="directive">Alias</code> directive allows documents to be stored in the local filesystem other than under the <code class="directive"><a href="../mod/core.html#documentroot">DocumentRoot</a></code>. URLs with a (%-decoded) path beginning with <var>url-path</var> will be mapped to local files beginning with <var>directory-path</var>.</p> <div class="example"><h3>Example:</h3><p><code> Alias /image /ftp/pub/image </code></p></div> <p>A request for http://myserver/image/foo.gif would cause the server to return the file /ftp/pub/image/foo.gif.</p> <p>Note that if you include a trailing / on the <var>url-path</var> then the server will require a trailing / in order to expand the alias. That is, if you use <code>Alias /icons/ /usr/local/apache/icons/</code> then the url <code>/icons</code> will not be aliased.</p> <p>Note that you may need to specify additional <code class="directive"><a href="../mod/core.html#directory"><Directory></a></code> sections which cover the <em>destination</em> of aliases. Aliasing occurs before <code class="directive"><a href="../mod/core.html#directory"><Directory></a></code> sections are checked, so only the destination of aliases are affected. (Note however <code class="directive"><a href="../mod/core.html#location"><Location></a></code> sections are run through once before aliases are performed, so they will apply.)</p> <p>In particular, if you are creating an <code>Alias</code> to a directory outside of your <code class="directive"><a href="../mod/core.html#documentroot">DocumentRoot</a></code>, you may need to explicitly permit access to the target directory.</p> <div class="example"><h3>Example:</h3><p><code> Alias /image /ftp/pub/image<br /> <Directory /ftp/pub/image><br /> <span class="indent"> Order allow,deny<br /> Allow from all<br /> </span> </Directory> </code></p></div></div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="directive-section"><h2><a name="AliasMatch" id="AliasMatch">AliasMatch</a> <a name="aliasmatch" id="aliasmatch">Directive</a></h2><table class="directive"><tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Maps URLs to filesystem locations using regular expressions</td></tr><tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AliasMatch <var>regex</var><var>file-path</var>|<var>directory-path</var></code></td></tr><tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr><tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr><tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_alias</td></tr></table> <p>This directive is equivalent to <code class="directive"><a href="#alias">Alias</a></code>, but makes use of standard regular expressions, instead of simple prefix matching. The supplied regular expression is matched against the URL-path, and if it matches, the server will substitute any parenthesized matches into the given string and use it as a filename. For example, to activate the <code>/icons</code> directory, one might use:</p> <div class="example"><p><code> AliasMatch ^/icons(.*) /usr/local/apache/icons$1 </code></p></div></div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="directive-section"><h2><a name="Redirect" id="Redirect">Redirect</a> <a name="redirect" id="redirect">Directive</a></h2><table class="directive"><tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sends an external redirect asking the client to fetcha different URL</td></tr>⌨️ 快捷键说明
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