asp.net-mvc - Asp.Net MVC：处理错误视图中引发的错误

Question

我在 MVC (4) 中设置了错误处理，效果很好。我已经在 global.asax 中注册了 HandleErrorAttribute 并在 web.config 中设置了适当的配置。但是，如果我重定向到错误视图并且错误视图本身引发错误，我将被重定向回错误页面 - 无休止。错误发生在布局和应用程序外部管理的布局中。如果布局中有错误，我会感到很沮丧。我怎样才能防止这种情况？我应该使用哪种错误处理回退？使用不同的布局不是一种选择。

Answer 1

这是我的做法。试试看：

protected void Application_Error(object sender, EventArgs e)
{                        
    //Retrieving the last server error
    var exception = Server.GetLastError();    

    //Erases any buffered HTML output
    Response.Clear();

    //Declare the exception
    var httpException = exception as HttpException;

    var routeData = new RouteData();
    routeData.Values.Add("controller", "Error"); //Adding a reference to the error controller

    if (httpException == null)
    {
        routeData.Values.Add("action", "ServerError"); //Non HTTP related error handling
    }
    else //It's an Http Exception, Let's handle it.
    {
        switch (httpException.GetHttpCode())
        {
            //these are special views to handle each error
            case 401:
            case 403:
                //Forbidden page.
                routeData.Values.Add("action", "Forbidden");
                break;
            case 404:
                //Page not found.
                routeData.Values.Add("action", "NotFound");
                break;       
            case 500:
                routeData.Values.Add("action", "ServerError");
                break;
            default:
                routeData.Values.Add("action", "Index");
                break;
        }
    }

    //Pass exception details to the target error View.
    routeData.Values.Add("message", exception);

    //Clear the error on server.
    Server.ClearError();

    //Avoid IIS7 getting in the middle
    Response.TrySkipIisCustomErrors = true;

    // Call target Controller and pass the routeData.
    IController errorController = new ErrorController();
    errorController.Execute(new RequestContext(
         new HttpContextWrapper(Context), routeData));
}