解决Asp.net MVC3下Web.config开启Custom Errors后Application_Error不触发问题

<customErrors mode="On" defaultRedirect="~/Home/Error">
<error statusCode="404" redirect="~/Home/NotFound" />
</customErrors>

public class MyExceptionFilter : IExceptionFilter
{
public void OnException(ExceptionContext context)
{
Exception ex = context.Exception;
if (!(ex is HttpException))
{
// 记录日志
}
}
}

public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
filters.Add(new MyExceptionFilter());    // 一定要放在 HandleErrorAttribute 之前
filters.Add(new HandleErrorAttribute());   // 这里拦截了Error消息，所以Application_Erro不会触发
}