解决session过期跳转到登陆页面并…

package com.lz.filter;

import java.io.IOException;

import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import com.lz.pojo.Userinfo;

import com.lz.util.DefaultElements;

public class AccessFilter implements Filter {

 public static String loginurl;

 public static String errorurl;

 

 

 public void destroy() {

  // TODO Auto-generated method
stub

 }

 

 public void doFilter(ServletRequest arg0,
ServletResponse arg1,

   FilterChain
arg2) throws IOException, ServletException {

  // TODO Auto-generated method
stub

  HttpServletRequest request =
(HttpServletRequest) arg0;

  HttpServletResponse response =
(HttpServletResponse) arg1;

 

  Userinfo user = (Userinfo)
request.getSession().getAttribute("user");

 

   

  if (user == null) {

   response.sendRedirect(DefaultElements.LOGINURL);

   return;

  }

  arg2.doFilter(request,
response);

 }

 public void init(FilterConfig arg0) throws
ServletException {

 }

}

 

但是这样不能不能跳出iframe等框架。

可以用javaScript解决 

在你想控制跳转的页面，比如login.jsp中的
与之间加入以下代码：

<---script language="JavaScript"> 

if (window != top) 

top.location.href = location.href; 

<----/script>