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<div id="page-content"><div id="preamble"><h1>Apache模块 mod_speling</h1>
<table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="module">
<tr><th><a href="module-dict.html#Description">说明</a></th><td>自动纠正URL中的拼写错误</td></tr>
<tr><th><a href="module-dict.html#Status">状态</a></th><td>扩展(E)</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">模块名</a></th><td>speling_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">源文件</a></th><td>mod_speling.c</td></tr>
</table>
<h3>概述</h3>
<p>Requests to documents sometimes cannot be served by the core
apache server because the request was misspelled or
miscapitalized. This module addresses this problem by trying to
find a matching document, even after all other modules gave up.
It does its work by comparing each document name in the
requested directory against the requested document name
<strong>without regard to case</strong>, and allowing
<strong>up to one misspelling</strong> (character insertion /
omission / transposition or wrong character). A list is built
with all document names which were matched using this
strategy.</p>
<p>If, after scanning the directory,</p>
<ul>
<li>no matching document was found, Apache will proceed as
usual and return a "document not found" error.</li>
<li>only one document is found that "almost" matches the
request, then it is returned in the form of a redirection
response.</li>
<li>more than one document with a close match was found, then
the list of the matches is returned to the client, and the
client can select the correct candidate.</li>
</ul>
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<div class="directive-section"><h2><a name="CheckSpelling" id="CheckSpelling">CheckSpelling</a> <a name="checkspelling" id="checkspelling">指令</a></h2>
<table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="directive">
<tr><th><a href="directive-dict.html#Description">说明</a></th><td>Enables the spelling
module</td></tr>
<tr><th><a href="directive-dict.html#Syntax">语法</a></th><td><code>CheckSpelling on|off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">默认值</a></th><td><code>CheckSpelling Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">作用域</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">覆盖项</a></th><td>Options</td></tr>
<tr><th><a href="directive-dict.html#Status">状态</a></th><td>扩展(E)</td></tr>
<tr><th><a href="directive-dict.html#Module">模块</a></th><td>mod_speling</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">兼容性</a></th><td>CheckSpelling was available as a separately available
module for Apache 1.1, but was limited to miscapitalizations. As
of Apache 1.3, it is part of the Apache distribution. Prior to Apache
1.3.2, the <code>CheckSpelling</code> directive was only available in the
"server" and "virtual host" contexts.</td></tr>
</table>
<p>This directive enables or disables the spelling module. When
enabled, keep in mind that</p>
<ul>
<li>the directory scan which is necessary for the spelling
correction will have an impact on the server's performance
when many spelling corrections have to be performed at the
same time.</li>
<li>the document trees should not contain sensitive files
which could be matched inadvertently by a spelling
"correction".</li>
<li>the module is unable to correct misspelled user names (as
in <code>http://my.host/~apahce/</code>), just file names or
directory names.</li>
<li>spelling corrections apply strictly to existing files, so
a request for the <code><Location /status></code> may
get incorrectly treated as the negotiated file
"<code>/stats.html</code>".</li>
</ul>
<p>mod_speling should not be enabled in <a href="mod_dav.html">DAV</a>
enabled directories, because it will try to "spell fix" newly created
resource names against existing filenames, e.g., when trying to upload
a new document <code>doc43.html</code> it might redirect to an existing
document <code>doc34.html</code>, which is not what was intended.
</p>
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