jsp页面清缓存的整理

<%

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