session失效后ajax请求跳转到登陆页

来源：互联网发布：面部捕捉软件编辑：程序博客网时间：2024/05/21 09:27

1.首先要再SessionFilter中进行ajax请求过滤，代码如下:

if (session == null)//session不存在{    String ajaxSubmit = servletRequest.getHeader("X-Requested-With");        if(ajaxSubmit != null && ajaxSubmit.equals("XMLHttpRequest")){               PrintWriter printWriter = servletResponse.getWriter();       printWriter.print("timeout");       printWriter.flush();       printWriter.close();}else{      //跳转回首页    servletResponse.sendRedirect("开始页面");}}

2.前端进行拦截处理

function getTopWinow() { var p = window; while (p != p.parent) {  p = p.parent; } return p;}$.ajaxSetup({    type : 'POST',    dataFilter : function(data, type) {        //alert("debug");if (data == "timeout" || data == "[object XMLDocument]") {// ajax请求，发现session过期，重新刷新页面，跳转到登录页面    var top = getTopWinow();    top.location.href = '开始页面';} else {    return data;}}

0 0