asp.net mvc中配置全局异常过滤器

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.IO;
using System.Text;
namespace TimeRecord.Models
{
    public class MyHandlerErrorAttribute : HandleErrorAttribute
    {
        public override void OnException(ExceptionContext filterContext)
        {
         //1.获取异常对象
            Exception ex = filterContext.Exception;
            //2.获取请求的类名和方法名
            string strController = filterContext.RouteData.Values["controller"].ToString();
            string strAction = filterContext.RouteData.Values["action"].ToString();
            //3.记录异常日志
            string errMsg = String.Format("控制器:{0};Action:{1};异常信息：{2};",strController,strAction,ex.ToString());
            WtLog(errMsg);
            //重定向到友好页面
            filterContext.Result = new RedirectResult("/TimeRecord/error");
            //标记异常已经处理完毕
            filterContext.ExceptionHandled = true;
            base.OnException(filterContext);
        }
        public void WtLog(string message) 
        
      {
          string path = AppDomain.CurrentDomain.BaseDirectory + "loglog.txt";
            
          using (StreamWriter sw = new StreamWriter(path,true,Encoding.Default  ))
          {
              sw.Flush();//清除当前编写器的所有缓冲区，并将所有缓冲的数据写入基础流。
              sw.WriteLine("时间：" + DateTime.Now);
              sw.WriteLine("内容：" + message);
              sw.WriteLine("=======");
          }
        
        }
    }
}

using System.Web;
using System.Web.Mvc;
using TimeRecord.Models;

namespace TimeRecord
{
    public class FilterConfig
    {
        public static void RegisterGlobalFilters(GlobalFilterCollection filters)
        {
            filters.Add(new HandleErrorAttribute());
            filters.Add(new MyHandlerErrorAttribute());
        }
    }
}

    <customErrors mode="On"></customErrors>

   #region 全部动态
      [HttpGet]

       public ActionResult UserTimeRecord()


     {
         int a = 0;
         int b = 1 / a;

         
          
        }
 
  
        #endregion