仅在用户首次点击登录屏幕时生成错误

Question

仅在制作中，当用户点击我们的登录屏幕时，我们会收到以下elmah eror

System.NullReferenceException: Object reference not set to an instance of an object.
Generated: Wed, 24 Apr 2013 16:50:35 GMT

System.NullReferenceException: Object reference not set to an instance of an object.
   at System.Web.Routing.RouteCollection.GetRouteData(HttpContextBase httpContext)
   at System.Web.Routing.UrlRoutingModule.PostResolveRequestCache(HttpContextBase context)
   at System.Web.Routing.UrlRoutingModule.OnApplicationPostResolveRequestCache(Object sender, EventArgs e)
   at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

不幸的是，没有很多东西可以给我任何提示！

我的猜测是在某种情况下，这种情况下的路线在尝试使用时还没有完成......但这只是猜测。

之前有没有人见过这个错误？

我们正在使用GlobalAsax Begine Request方法加载路径。

protected void Application_BeginRequest()
        {
           if(RouteTable.Routes.Count == 0) {
                XmlConfigurator.Configure();
                ILog log = LogManager.GetLogger("MainLog");
                log.Info("Logger started");

                //AreaRegistration.RegisterAllAreas();
                //log.Info("RegisterAllAreas done");

                RegisterRoutes(RouteTable.Routes);
                log.Info("RegisterRoutes done");

                try
                {
                    BootstrapStuctureMap.Bootstrap();
                    log.Info("Done Bootstrapping");

                    BootStrapAutoMapper.Configure();
                    log.Info("Done Automapping");
                }
                catch (Exception ex)
                {
                    log.Error("Error in Application_Start: ex = " + ex);
                    throw;
                }

                ControllerBuilder.Current.SetControllerFactory(new StructureMapControllerFactory());
                log.Info("Done Building StructureMapControllerFactory");

                ModelBinders.Binders.DefaultBinder = new CustomModelBinder();
                ModelMetadataProviders.Current = new AnnotationsAndConventionsBasedModelMetaDataProvider();
            }
        }

 public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
            routes.IgnoreRoute("elmah.axd");

            // you have to add this IgnoreRoute so that the PDFX pages get handled like a regular *.aspx page, not a MVC page. - EWB
            routes.IgnoreRoute("{resource}.pdfx");
            routes.IgnoreRoute("{*favicon}", new {favicon = @"(.*/)?favicon.ico(/.*)?"});

            routes.MapRoute("StudentLookup_Return",
                            "StudentLookup/StudentLookup/{nextAction}/{nextController}",
                            new
                                {
                                    controller = "StudentLookup",
                                    action = "StudentLookup"
                                }
                );
            routes.MapRoute("StudentLookup_Id",
                            "StudentLookup/StudentLookup/{Id}",
                            new
                                {
                                    controller = "StudentLookup",
                                    action = "StudentLookup",
                                    Id = UrlParameter.Optional
                                }
                );
            routes.MapRoute("Default", // Route name
                            "{controller}/{action}/{id}", // URL with parameters
                            new
                                {
                                    controller = "Home",
                                    action = "Index",
                                    id = UrlParameter.Optional
                                } // Parameter defaults
                );
        }

我们相信它是在一些新的服务器在线购买之后出现的，所以它可能与这些服务器的配置方式有关。

我有点在这里扔一个冰雹玛丽，以前有人见过这个，并想出来了！

非常感谢任何帮助。