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<title><![CDATA[向东博客 专注WEB应用 构架之美 --- 构架之美，在于尽态极妍 | 应用之美，在于药到病除]]></title> 
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<copyright><![CDATA[向东博客 专注WEB应用 构架之美 --- 构架之美，在于尽态极妍 | 应用之美，在于药到病除]]></copyright>
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<title><![CDATA[如何让ie浏览器不缓存网页]]></title> 
<author>jack &lt;xdy108@126.com&gt;</author>
<category><![CDATA[WEB2.0]]></category>
<pubDate>Tue, 05 Nov 2013 06:22:48 +0000</pubDate> 
<guid>http://www.jackxiang.com/post//</guid> 
<description>
<![CDATA[ 
	背景：有时IE浏览器在访问页面时会缓存，而在多语言的网页设计时往往就会出现切换语言后还是以前的页面，是因为此时多语言页面根本没有去服务器请求，而（1）从本地cache里读取的缘故，同时cookie必须能及时设置成某种语言，不要因Js太多导致在切换语言时没执行到，进而切换了还是没有切换成功的问题。<br/>（2）服务器在这时必须关闭对IE等各种浏览器的cache指示输出才行，否则也会出现因为cookie改变了，服务器还是用以前的html文档给输出，语言没有变。<br/><textarea name="code" class="php" rows="15" cols="100">
&nbsp;&nbsp;&nbsp;&nbsp;if ($max_age &gt; 0) &#123;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$this-&gt;getRequest()-&gt;addHeader(&#039;Cache-Control&#039;, &#039;max-age=&#039; . $max_age);
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$this-&gt;getRequest()-&gt;addHeader(&#039;Expires&#039;, gmdate(&#039;D, d M Y H:i:s&#039;, time() + $max_age) . &#039; GMT&#039;);
&nbsp;&nbsp;&nbsp;&nbsp;&#125;
&nbsp;&nbsp;&nbsp;&nbsp;else &#123;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$this-&gt;getRequest()-&gt;addHeader(&#039;Cache-Control&#039;, &#039;no-cache&#039;);
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$this-&gt;getRequest()-&gt;addHeader(&#039;Expires&#039;, &#039;0&#039;);
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$this-&gt;getRequest()-&gt;addHeader(&#039;Pragma&#039;, &#039;No-cache&#039;);
&nbsp;&nbsp;&nbsp;&nbsp;&#125;
</textarea><br/>（3）再就是对CSS等得同一套CSS，输出的各种语言的Html不同，加载上了同一css文件的不同片段进而实现了排版功能。<br/><br/>IE很聪明，如果缓存里面拥有该URL，那就从Cache里面读取数据。<br/>　　但是有时候我们不希望浏览器读取缓存。IE的聪明就反被聪明误了。<br/>　　JS实现：<br/>　　<br/>代码<br/><textarea name="code" class="js" rows="15" cols="100">
function convertURL(url)&#123;
// 获取时间戳
var timeStamp = (new Date()).valueOf();
&nbsp;&nbsp;if (url.indexOf(&quot;?&quot;) &gt;= 0)&#123;
&nbsp;&nbsp;url = url + &quot;&amp;t=&quot; + timeStamp ;
&#125;else &#123;
&nbsp;&nbsp;url = url + &quot;?t=&quot; + timeStamp ;
&#125;
　return url;
&#125;
</textarea><br/><br/>每次页面加载&nbsp;&nbsp;清空缓存：<br/><textarea name="code" class="JS" rows="15" cols="100">
//清空缓存 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Response.Buffer = true;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Response.ExpiresAbsolute = System.DateTime.Now.AddMonths(-120);
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Response.Expires = 0;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Response.CacheControl = &quot;no-cache&quot;;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Response.AddHeader(&quot;pragma&quot;, &quot;no=cache&quot;);
</textarea><br/><br/>来自：http://www.douban.com/note/231598561/<br/>http://bbs.csdn.net/topics/350158157
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<title><![CDATA[[评论] 如何让ie浏览器不缓存网页]]></title> 
<author> &lt;user@domain.com&gt;</author>
<category><![CDATA[评论]]></category>
<pubDate>Thu, 01 Jan 1970 00:00:00 +0000</pubDate> 
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