$.ajaxSetup({
      cache:false,beforeSend:function (jqXHR,settings) {
        if (settings.url.indexOf('${resource(dir: 'login')}') == -1 && checkLoginFlag) {
          checkLoginFlag = false;
          //1秒馁不重复进行验证
          setTimeout(function () {
            checkLoginFlag = true;
          },1000);

          $.get('url',function (data) {
            if (data != 'true') {
              art.dialog.alert('您的登陆已经过期，请重新登录！',function () {
                window.location.href = '${createLink(uri: '/login')}';
              });
            }
          });
        }
      },complete: function() {
        //隐藏表单提交提示
        formLay.hide();
        formLoading.hide();
      }
    });