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Ajax 提交session实效跳转到完整的登陆页面

(function($){      // 保存原有的jquery ajax;    var $_ajax = $.ajax;      $.ajax = function(options){          var originalSuccess,              mySuccess,              success_context;          if (options.success) {               // save reference to original success callback            originalSuccess = options.success;              success_context = options.context ? options.context : $;              // 自定义callback            mySuccess = function(data) {                              if( data.indexOf("<body name=\"loginPage\"") >= 0){                                window.location.href =baseURL+"/login.jsp";                                return;                           }else{                            // call original success callback                            originalSuccess.apply(success_context, arguments);                             }            };              // override success callback with custom implementation            options.success = mySuccess;          }           // call original ajax function with modified arguments        $_ajax.apply($, arguments);      };        })(jQuery);