解决session过期跳转到登陆页面并…

来源：互联网发布：sql delete多个编辑：程序博客网时间：2024/05/18 18:54

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 methodstub

}

public void doFilter(ServletRequest arg0,ServletResponse arg1,
   FilterChainarg2) throws IOException, ServletException {
  // TODO Auto-generated methodstub
  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) throwsServletException {
}

}

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>

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