ASP.NET MVC 5 - 如何在httpErrors中更改路由?

时间:2016-06-03 10:44:41

标签: c# asp.net error-handling asp.net-mvc-5 routeconfig

我试图以这种方式处理MVC5站点中的HTTP错误:

的web.config:

<system.webServer>
    <httpErrors errorMode="Custom" existingResponse="Replace">
      <clear/>
      <error statusCode="403" path="/language/Error/Details/403" responseMode="ExecuteURL"/>
      <error statusCode="404" path="/language/Error/Details/404" responseMode="ExecuteURL"/>
      <error statusCode="500" path="/language/Error/Details/500" responseMode="ExecuteURL"/>
    </httpErrors>
</system.webServer>

ErrorController.cs:

// GET: Error/Details
public ActionResult Details()
{
    /* Setting the language for the errors since it is not possible to handle multi-language errors in the web.config file where the errors are redirected */
    if (!CultureHelper.cultures.Contains(base.culture))
    {
        RouteData.Values["culture"] = CultureHelper.GetCurrentNeutralCulture();
    }

    /* Redirecting uncontrolled errors to 404 error */
    if (RouteData.Values["statusCode"] == null)
    {
        return RedirectToRoute(new { culture = base.culture, controller = "Error", action = "Details", statusCode = 404 });
    }

    /* Preparing the model */
    ErrorViewModel error = ErrorFactory.Create(Convert.ToInt32(RouteData.Values["statusCode"]));


    /* Preparing the view */
    base.SetLanguageFromRoute();

    return View(error);
}

RouteConfig.cs:

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

    routes.MapRoute(
        name: "Default",
        url: "{culture}/{controller}/{action}/{id}",
        defaults: new { culture = CultureHelper.GetCurrentNeutralCulture(), controller = "User", action = "Home", id = UrlParameter.Optional }
    );

    routes.MapRoute(
        name: null,
        url: "{culture}/Error/Details/{statusCode}",
        defaults: new { culture = CultureHelper.GetCurrentNeutralCulture() }
    );
}

我的问题是,当调用Details GET操作时,一旦它到达此行:

if (RouteData.Values["statusCode"] == null)

它总是返回true,因为没有&#34; statusCode&#34;键入RouteData,因为它使用默认路由而不是错误路由,并且statusCode在路由中传递,名称为&#34; id&#34; (默认路由键)。

我知道我可以使用默认路由并从ID中捕获状态代码,但是当我从其他控制器执行RedirectToRoute错误时我有自定义路由,所以我想使用在这里。有没有办法告诉<httpErrors>我想使用与默认路线不同的路线?

1 个答案:

答案 0 :(得分:-1)

  

有没有办法告诉我要使用与默认路线不同的路线?

是。有两种方法。

最明智的方法是put specific routes before general routes,因此您的路线表中没有无法到达的执行路径。这可确保您的传入URL定向到正确的控制器。

这意味着您需要在默认路由之前放置更具体的自定义路由,以便首先检查它。

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

        routes.MapRoute(
            name: "Error",
            url: "{culture}/Error/Details/{statusCode}",
            defaults: new { culture = CultureHelper.GetCurrentNeutralCulture() }
        );

        routes.MapRoute(
            name: "Default",
            url: "{culture}/{controller}/{action}/{id}",
            defaults: new { culture = CultureHelper.GetCurrentNeutralCulture(), controller = "User", action = "Home", id = UrlParameter.Optional }
        );
    }

另一种方法是在调用RedirectToRouteResult时指定路由名称。请注意,您没有为您的路线命名(它为空),因此除非您按照上面的名称命名,否则无法执行此操作。

return RedirectToRoute(
    routeName: "Error", 
    routeValues: new { culture = base.culture, controller = "Error", action = "Details", statusCode = 404 });

这会将您重定向到正确的网址,但可能仍然无法正常运行,因为当访问该网址时,它仍会点击您的&#34;默认&#34;路由,因为它匹配此URL并首先注册。