为什么在MVC里自定义异常捕获不管用了？麻烦大神看下！

[krukur]

在里用的是ASP.NET的自定义异常捕获，但就是捕获不到自定义的异常，如果在web.config的system.web节点下设置默认的错误页面，又能转到这个错误页面。
代码如下：

Global.asax:

public class MvcApplication : SpringMvcApplication // System.Web.HttpApplication
    {
        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);

            #region
            string fileLogPath = Server.MapPath("Log/");
            ThreadPool.QueueUserWorkItem((a) => {
                while (true)
                {
                    if (MyExceptionAttribute.ExceptionQueue.Count > 0)
                    {
                        Exception ex = MyExceptionAttribute.ExceptionQueue.Dequeue();
                        string fileName = DateTime.Now.ToString("yyyy-MM-dd") + ".txt";
                        File.AppendAllText(fileLogPath + fileName, ex.ToString(), System.Text.Encoding.UTF8);
                    }else
                    {
                        Thread.Sleep(5000);
                    }
                }
            }, fileLogPath);
            #endregion
        }

FilterConfig.cs

namespace Andrew.Royal.WebApp
{
    public class FilterConfig
    {
        public static void RegisterGlobalFilters(GlobalFilterCollection filters)
        {
            // filters.Add(new HandleErrorAttribute());
            filters.Add(new MyExceptionAttribute());
        }
    }
}

MyExceptionAttribute.cs

namespace Andrew.Royal.WebApp.Models
{
    public class MyExceptionAttribute : HandleErrorAttribute
    {
        public static Queue<Exception> ExceptionQueue = new Queue<Exception>();
        public override void OnException(ExceptionContext filterContext)
        {
            base.OnException(filterContext);
            ExceptionQueue.Enqueue(filterContext.Exception);
            //怎么都跳转不到这个页面
            filterContext.HttpContext.Response.Redirect("/Error.html");
        }
    }
}

web.config

  <system.web>
    <customErrors mode="On" ></customErrors>
    <!--defaultRedirect="/Error2.html"-->
    
    <authentication mode="None"/>
    <compilation debug="true" targetFramework="4.5.2"/>
    <httpRuntime targetFramework="4.5.2"/>
  </system.web>

[krukur]

没有人帮忙看下吗