protected override void OnException(ExceptionContext filterContext)
 {
     MallUtils.WriteLogFile(filterContext.Exception);
     if (WorkContext.IsHttpAjax)
     {
         filterContext.Result = AjaxResult("error", "系统错误,请联系管理员");
     }
     else
     {
         filterContext.Result = new ViewResult()
         {
             ViewName = "error"
         }
     };
 }