asp.net-mvc - ASP.NET MVC 5自定义错误页面

Question

我在 ASP.NET MVC 5 应用程序中使用自定义授权属性，如下所示:

public class CustomAuthorizeAttribute : AuthorizeAttribute
{
    protected override void HandleUnauthorizedRequest(AuthorizationContext context)
    {
        if (context.HttpContext.Request.IsAuthenticated)
        {
            context.Result = new System.Web.Mvc.HttpStatusCodeResult((int)System.Net.HttpStatusCode.Forbidden);                
        }
        else
        {
            base.HandleUnauthorizedRequest(context);
        }
    }
}

在我的web.config的 system.web部分中，我提到了以下错误路径:

<system.web>
    <customErrors mode="On" defaultRedirect="/Error/Error">
      <error statusCode="403" redirect="/Error/NoPermissions"/>
    </customErrors>
</system.web>

但是我永远不会重定向到 /Error/NoPermissions的自定义错误页面。而是浏览器显示一般错误页面，显示 “HTTP错误403.0-禁止” 。

Answer 1

[1]:从Web.config中删除所有“customErrors”和“httpErrors”

[2]:检查“App_Start / FilterConfig.cs”看起来像这样:

public class FilterConfig
{
    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new HandleErrorAttribute());
    }
}

[3]:在“Global.asax”中添加以下方法:

public void Application_Error(Object sender, EventArgs e)
{
    Exception exception = Server.GetLastError();
    Server.ClearError();

    var routeData = new RouteData();
    routeData.Values.Add("controller", "ErrorPage");
    routeData.Values.Add("action", "Error");
    routeData.Values.Add("exception", exception);

    if (exception.GetType() == typeof(HttpException))
    {
        routeData.Values.Add("statusCode", ((HttpException)exception).GetHttpCode());
    }
    else
    {
        routeData.Values.Add("statusCode", 500);
    }

    Response.TrySkipIisCustomErrors = true;
    IController controller = new ErrorPageController();
    controller.Execute(new RequestContext(new HttpContextWrapper(Context), routeData));
    Response.End();
}

[4]:添加“Controllers / ErrorPageController.cs”

public class ErrorPageController : Controller
{
    public ActionResult Error(int statusCode, Exception exception)
    {
         Response.StatusCode = statusCode;
         ViewBag.StatusCode = statusCode + " Error";
         return View();
    }
}

[5]:在“ View /共享/Error.cshtml”中

@model System.Web.Mvc.HandleErrorInfo
@{
    ViewBag.Title = (!String.IsNullOrEmpty(ViewBag.StatusCode)) ? ViewBag.StatusCode : "500 Error";
}

<h1 class="error">@(!String.IsNullOrEmpty(ViewBag.StatusCode) ? ViewBag.StatusCode : "500 Error"):</h1>

//@Model.ActionName
//@Model.ControllerName
//@Model.Exception.Message
//@Model.Exception.StackTrace

:D