清除缓存,php,html,jsp,asp中防止模式窗口页面不更新的情况

清除缓存,php,html,jsp,asp中防止页面不更新的情况
Code:

HTML
<META HTTP-EQUIV=”pragma” CONTENT=”no-cache”>
<META HTTP-EQUIV=”Cache-Control” CONTENT=”no-cache, must-revalidate”>
<META HTTP-EQUIV=”expires” CONTENT=”Mon, 23 Jan 1978 20:52:30 GMT”>
ASP
<%
Response.Expires = -1
Response.ExpiresAbsolute = Now() – 1
Response.cachecontrol = “no-cache”
%>

PHP

header(“Expires: Mon, 26 Jul 1997 05:00:00 GMT”);
header(“Cache-Control: no-cache, must-revalidate”);
header(“Pragma: no-cache”);

JSP

response.setHeader(“Pragma”,”No-Cache”);
response.setHeader(“Cache-Control”,”No-Cache”);
response.setDateHeader(“Expires”, 0);

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