mvc 全局错误处理

public static void AppErrorSet(HttpContext context, Controller errorController)
        {
            var httpContext = context;
            var currentController = " ";
            var currentAction = " ";
            var currentRouteData = RouteTable.Routes.GetRouteData(new HttpContextWrapper(httpContext));

            if (currentRouteData != null)
            {
                if (currentRouteData.Values["controller"] != null && !String.IsNullOrEmpty(currentRouteData.Values["controller"].ToString()))
                {
                    currentController = currentRouteData.Values["controller"].ToString();
                }
                if (currentRouteData.Values["action"] != null && !String.IsNullOrEmpty(currentRouteData.Values["action"].ToString()))
                {
                    currentAction = currentRouteData.Values["action"].ToString();
                }
            }

            var ex = context.Server.GetLastError();
            var controller = errorController;
            var routeData = new RouteData();
            var action = "Index";

            if (ex is HttpException)
            {
                var httpEx = ex as HttpException;

                switch (httpEx.GetHttpCode())
                {
                    case 404:
                        action = "NotFound";
                        break;

                    case 401:
                        action = "AccessDenied";
                        break;
                }
            }

            httpContext.ClearError();
            httpContext.Response.Clear();
            httpContext.Response.ContentType = "text/html";
            httpContext.Response.StatusCode = ex is HttpException ? ((HttpException)ex).GetHttpCode() : 500;
            httpContext.Response.TrySkipIisCustomErrors = true;

            routeData.Values["controller"] = "Error";
            routeData.Values["action"] = action;

            controller.ViewData.Model = new HandleErrorInfo(ex, currentController, currentAction);
            ((IController)controller).Execute(new RequestContext(new HttpContextWrapper(httpContext), routeData));
        }

public class ErrorController : Controller
  {
    public ActionResult Index()
    {
      return View();
    }

    public ActionResult NotFound()
    {
      return View();
    }

    public ActionResult AccessDenied()
    {
      return View();
    }
  }

public class MvcApplication : System.Web.HttpApplication
    {
      
        protected void Application_Start()
        {
            //AreaRegistration.RegisterAllAreas();

            //RegisterGlobalFilters(GlobalFilters.Filters);
            //RegisterRoutes(RouteTable.Routes);
            AreaRegistration.RegisterAllAreas();

            WebApiConfig.Register(GlobalConfiguration.Configuration);
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);
            AuthConfig.RegisterAuth();

            //对象映射列表
            AutoMapperConfig.MapperConfig();
        }

        /// <summary>
        /// 这里处理 mvcApplication 外的异常 mvc 框架边界外的
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Application_Error(object sender, EventArgs e)
        {

            AppError.AppErrorSet(((MvcApplication)sender).Context,new ErrorController());
            
        }
    }

在系统Application_Error 中定义的全局错误处理方法。这里可以处理 mvc 框架边界外的系统异常

没有 页面 302跳转的问题。404 500 http状态码也是正常显示。

errorController 中的view  在ie下 页面字节数 长度需要达到一定长度 ie才正常显示。不然会跳转到ie默认 404 页面