c# - ExceptionFilter 不处理异常

Question

我在 MVC 3 应用程序中创建了自定义异常处理程序，不幸的是，如果抛出异常，它永远不会被命中。我错过了什么吗？

自定义异常过滤器

public class ExceptionFilter : IExceptionFilter
{
        public void OnException(ExceptionContext filterContext)
        {
         //Never executed
        }
} 

在 Global.asax.cx 中注册过滤器

    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new ExceptionFilter()); //must be before HandleErrorAttribute
        filters.Add(new HandleErrorAttribute());
    }

网页配置

<customErrors mode="RemoteOnly" defaultRedirect="/error/default">
  <error statusCode="404" redirect="/error/pagenotfound" />
</customErrors>

Answer 1

If you are testing by navigating to a missing page, what really happens is it tries to resolve the controller and you get an unhandled exception that throws a 500. Add a and you should be able to trap the other errors as well.