mod_negotiation.html.en

最新apache的源代码

        &lt;/html&gt;<br />
        ----xyz----
      </code></p></div>
      </dd>
    </dl>
</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section">
<h2><a name="multiviews" id="multiviews">MultiViews</a></h2>
    <p>A MultiViews search is enabled by the <code>MultiViews</code>
    <code class="directive"><a href="../mod/core.html#options">Options</a></code>. If the server receives a
    request for <code>/some/dir/foo</code> and
    <code>/some/dir/foo</code> does <em>not</em> exist, then the
    server reads the directory looking for all files named
    <code>foo.*</code>, and effectively fakes up a type map which
    names all those files, assigning them the same media types and
    content-encodings it would have if the client had asked for one
    of them by name. It then chooses the best match to the client's
    requirements, and returns that document.</p>

    <p>The <code class="directive"><a href="../mod/mod_mime.html#multiviewsmatch">MultiViewsMatch</a></code>
    directive configures whether Apache will consider files
    that do not have content negotiation meta-information assigned
    to them when choosing files.</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="CacheNegotiatedDocs" id="CacheNegotiatedDocs">CacheNegotiatedDocs</a> <a name="cachenegotiateddocs" id="cachenegotiateddocs">Directive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Allows content-negotiated documents to be 
cached by proxy servers</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CacheNegotiatedDocs On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>CacheNegotiatedDocs Off</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_negotiation</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>The syntax changed in version 2.0.</td></tr>
</table>
    <p>If set, this directive allows content-negotiated documents
    to be cached by proxy servers. This could mean that clients
    behind those proxys could retrieve versions of the documents
    that are not the best match for their abilities, but it will
    make caching more efficient.</p>

    <p>This directive only applies to requests which come from
    HTTP/1.0 browsers. HTTP/1.1 provides much better control over
    the caching of negotiated documents, and this directive has no
    effect in responses to HTTP/1.1 requests.</p>

    <p>Prior to version 2.0,
    <code class="directive">CacheNegotiatedDocs</code> did not take an
    argument; it was turned on by the presence of the directive by
    itself.</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="ForceLanguagePriority" id="ForceLanguagePriority">ForceLanguagePriority</a> <a name="forcelanguagepriority" id="forcelanguagepriority">Directive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Action to take if a single acceptable document is not 
found</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ForceLanguagePriority None|Prefer|Fallback [Prefer|Fallback]</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ForceLanguagePriority Prefer</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>FileInfo</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_negotiation</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in version 2.0.30 and later</td></tr>
</table>
    <p>The <code class="directive">ForceLanguagePriority</code> directive uses
    the given <code class="directive"><a href="#languagepriority">LanguagePriority</a></code> to satisfy
    negotation where the server could otherwise not return a single
    matching document.</p>

    <p><code>ForceLanguagePriority Prefer</code> uses
    <code>LanguagePriority</code> to serve a one valid result, rather
    than returning an HTTP result 300 (MULTIPLE CHOICES) when there
    are several equally valid choices.  If the directives below were
    given, and the user's <code>Accept-Language</code> header assigned
    <code>en</code> and <code>de</code> each as quality <code>.500</code>
    (equally acceptable) then the first matching variant, <code>en</code>,
    will be served.</p>

    <div class="example"><p><code>
      LanguagePriority en fr de<br />
      ForceLanguagePriority Prefer
    </code></p></div>

    <p><code>ForceLanguagePriority Fallback</code> uses
    <code class="directive"><a href="#languagepriority">LanguagePriority</a></code> to
    serve a valid result, rather than returning an HTTP result 406
    (NOT ACCEPTABLE). If the directives below were given, and the user's
    <code>Accept-Language</code> only permitted an <code>es</code>
    language response, but such a variant isn't found, then the first
    variant from the <code class="directive"><a href="#languagepriority">LanguagePriority</a></code> list below will be served.</p>

    <div class="example"><p><code>
      LanguagePriority en fr de<br />
      ForceLanguagePriority Fallback
    </code></p></div>

    <p>Both options, <code>Prefer</code> and <code>Fallback</code>, may be
    specified, so either the first matching variant from <code class="directive"><a href="#languagepriority">LanguagePriority</a></code> will be served if
    more than one variant is acceptable, or first available document will
    be served if none of the variants matched the client's acceptable list
    of languages.</p>

<h3>See also</h3>
<ul>
<li><code class="directive"><a href="../mod/mod_mime.html#addlanguage">AddLanguage</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="LanguagePriority" id="LanguagePriority">LanguagePriority</a> <a name="languagepriority" id="languagepriority">Directive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>The precendence of language variants for cases where
the client does not express a preference</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LanguagePriority <var>MIME-lang</var> [<var>MIME-lang</var>]
...</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>FileInfo</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_negotiation</td></tr>
</table>
    <p>The <code class="directive">LanguagePriority</code> sets the precedence
    of language variants for the case where the client does not
    express a preference, when handling a MultiViews request. The list
    of <var>MIME-lang</var> are in order of decreasing preference.</p>

    <div class="example"><h3>Example:</h3><p><code>
      LanguagePriority en fr de
    </code></p></div>

    <p>For a request for <code>foo.html</code>, where
    <code>foo.html.fr</code> and <code>foo.html.de</code> both
    existed, but the browser did not express a language preference,
    then <code>foo.html.fr</code> would be returned.</p>

    <p>Note that this directive only has an effect if a 'best'
    language cannot be determined by any other means or the <code class="directive"><a href="#forcelanguagepriority">ForceLanguagePriority</a></code> directive
    is not <code>None</code>. In general, the client determines the
    language preference, not the server.</p>

<h3>See also</h3>
<ul>
<li><code class="directive"><a href="../mod/mod_mime.html#addlanguage">AddLanguage</a></code></li>
</ul>
</div>
</div>
<div class="bottomlang">
<p><span>Available Languages: </span><a href="../en/mod/mod_negotiation.html" title="English">&nbsp;en&nbsp;</a> |
<a href="../ja/mod/mod_negotiation.html" hreflang="ja" rel="alternate" title="Japanese">&nbsp;ja&nbsp;</a></p>
</div><div id="footer">
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