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

1.配置文件中开启CustomErrors

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

2.新建一个MyExceptionFilter类，实现IExceptionFilter接口

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

3.注册过滤器

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}