$.ajaxSetup( {
    //璁剧疆ajax璇锋眰缁撴潫鍚庣殑鎵ц鍔ㄤ綔
    complete :
        function(XMLHttpRequest, textStatus) {
            // 閫氳繃XMLHttpRequest鍙栧緱鍝嶅簲澶达紝sessionstatus
            var sessionstatus = XMLHttpRequest.getResponseHeader("REDIRECT");
            if (sessionstatus == "REDIRECT") {
            	localStorage.setItem("MESSAGE","璐︽埛寮傚湴鐧诲綍锛岃韪笅绾匡紒");
                var win = window;
                while (win != win.top){
                    win = win.top;
                }
                
                win.location.href= XMLHttpRequest.getResponseHeader("CONTEXTPATH");
            }
        }
});