jsp页面清除缓存

<%
if (request.getProtocol().compareTo("HTTP/1.0")==0)
response.setHeader("Pragma","No-cache");

else if(request.getProtocol().compareTo("HTTP/1.1")==0)
response.setHeader("Cache-Control","no-cache");

response.setDateHeader("Expires", 0);
%>
简单方法的整理

jsp中页面关闭时关闭session，cookie，页面缓存

一、清除页面缓存

在jsp页里

<%response.setHeader("Pragma","No-cache");

response.setHeader("Cache-Control","no-cache");

response.setDateHeader("Expires", 0);

response.flushBuffer();%>

在html页里

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

<META HTTP-EQUIV="Pragma" CONTENT="no-cache">

<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache">

<META HTTP-EQUIV="Expires" CONTENT="0">

二、清除cookie

<%

Cookie killMyCookie = new Cookie("mycookie", null);

killMyCookie.setMaxAge(0);

killMyCookie.setPath("/");

response.addCookie(killMyCookie);

%>

三、清除session

清除session方法

<%@ page language="java" %>

<%

session.invalidate();

%>

在页面关闭时清除session，需要捕获windows.onclose事件，再调用清除session方法