Asp.net mvc 5 MVC 5自定义路由-LegacyRoute:RouteBase中的错误404（第16章Apress中的Pro ASP.NET MVC 5一书中的示例）

Pro ASP.NET MVC 5一书中提供的代码来自第16章（路由传入URL）中的Apress。该示例是关于遗留URL的。接下来，我将放置自定义路由、routeconfig、控制器和视图的代码示例

LegacyRoute.cs

using System;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;

namespace UrlsAndRoutes.Infrastructure
{
    public class LegacyRoute : RouteBase
    {
        private string[] urls;
        public LegacyRoute(params string[] targetUrls)
        {
            urls = targetUrls;
        }
        public override RouteData GetRouteData(HttpContextBase httpContext)
        {
            RouteData result = null;
            string requestedURL = httpContext.Request.AppRelativeCurrentExecutionFilePath;
            if (urls.Contains(requestedURL, StringComparer.OrdinalIgnoreCase))
            {
                result = new RouteData(this, new MvcRouteHandler());
                result.Values.Add("controller", "Legacy");
                result.Values.Add("action", "GetLegacyURL");
                result.Values.Add("legacyURL", requestedURL);
            }
            return result;
        }

        public  override  VirtualPathData  GetVirtualPath(RequestContext requestContext, RouteValueDictionary values) 
        {
            VirtualPathData result = null;
            if (values.ContainsKey("legacyURL") && urls.Contains((string)values["legacyURL"], StringComparer.OrdinalIgnoreCase))
            {
                result = new VirtualPathData(this, new UrlHelper(requestContext).Content((string)values["legacyURL"]).Substring(1));
            }
            return result;
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using System.Web.Mvc.Routing.Constraints;

using UrlsAndRoutes.Infrastructure;

namespace UrlsAndRoutes
{
    public class RouteConfig
    {
        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.MapMvcAttributeRoutes();

            //routes.MapRoute("NewRoute", "App/Do{action}", new { controller = "Home", id = UrlParameter.Optional });

            //routes.Add(new Route("SayHello", new CustomRouteHandler()));

            routes.Add(new LegacyRoute("~/articles/Windows_3.1_Overview.html", "~/old/.NET_1.0_Class_Library"));

            routes.MapRoute("MyRoute", "{controller}/{action}", new { controller = "Home", action = "Index" });
            routes.MapRoute("MyOtherRoute", "App/{action}", new { controller = "Home" });
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace UrlsAndRoutes.Controllers
{
    public class LegacyController : Controller
    {
        public ActionResult GetLegacyURL(string legacyURL)
        {
            return View((object)legacyURL);
        }
    }
}

RouteConfig.cs

using System;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;

namespace UrlsAndRoutes.Infrastructure
{
    public class LegacyRoute : RouteBase
    {
        private string[] urls;
        public LegacyRoute(params string[] targetUrls)
        {
            urls = targetUrls;
        }
        public override RouteData GetRouteData(HttpContextBase httpContext)
        {
            RouteData result = null;
            string requestedURL = httpContext.Request.AppRelativeCurrentExecutionFilePath;
            if (urls.Contains(requestedURL, StringComparer.OrdinalIgnoreCase))
            {
                result = new RouteData(this, new MvcRouteHandler());
                result.Values.Add("controller", "Legacy");
                result.Values.Add("action", "GetLegacyURL");
                result.Values.Add("legacyURL", requestedURL);
            }
            return result;
        }

        public  override  VirtualPathData  GetVirtualPath(RequestContext requestContext, RouteValueDictionary values) 
        {
            VirtualPathData result = null;
            if (values.ContainsKey("legacyURL") && urls.Contains((string)values["legacyURL"], StringComparer.OrdinalIgnoreCase))
            {
                result = new VirtualPathData(this, new UrlHelper(requestContext).Content((string)values["legacyURL"]).Substring(1));
            }
            return result;
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using System.Web.Mvc.Routing.Constraints;

using UrlsAndRoutes.Infrastructure;

namespace UrlsAndRoutes
{
    public class RouteConfig
    {
        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.MapMvcAttributeRoutes();

            //routes.MapRoute("NewRoute", "App/Do{action}", new { controller = "Home", id = UrlParameter.Optional });

            //routes.Add(new Route("SayHello", new CustomRouteHandler()));

            routes.Add(new LegacyRoute("~/articles/Windows_3.1_Overview.html", "~/old/.NET_1.0_Class_Library"));

            routes.MapRoute("MyRoute", "{controller}/{action}", new { controller = "Home", action = "Index" });
            routes.MapRoute("MyOtherRoute", "App/{action}", new { controller = "Home" });
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace UrlsAndRoutes.Controllers
{
    public class LegacyController : Controller
    {
        public ActionResult GetLegacyURL(string legacyURL)
        {
            return View((object)legacyURL);
        }
    }
}

LegacyController.cs

using System;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;

namespace UrlsAndRoutes.Infrastructure
{
    public class LegacyRoute : RouteBase
    {
        private string[] urls;
        public LegacyRoute(params string[] targetUrls)
        {
            urls = targetUrls;
        }
        public override RouteData GetRouteData(HttpContextBase httpContext)
        {
            RouteData result = null;
            string requestedURL = httpContext.Request.AppRelativeCurrentExecutionFilePath;
            if (urls.Contains(requestedURL, StringComparer.OrdinalIgnoreCase))
            {
                result = new RouteData(this, new MvcRouteHandler());
                result.Values.Add("controller", "Legacy");
                result.Values.Add("action", "GetLegacyURL");
                result.Values.Add("legacyURL", requestedURL);
            }
            return result;
        }

        public  override  VirtualPathData  GetVirtualPath(RequestContext requestContext, RouteValueDictionary values) 
        {
            VirtualPathData result = null;
            if (values.ContainsKey("legacyURL") && urls.Contains((string)values["legacyURL"], StringComparer.OrdinalIgnoreCase))
            {
                result = new VirtualPathData(this, new UrlHelper(requestContext).Content((string)values["legacyURL"]).Substring(1));
            }
            return result;
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using System.Web.Mvc.Routing.Constraints;

using UrlsAndRoutes.Infrastructure;

namespace UrlsAndRoutes
{
    public class RouteConfig
    {
        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.MapMvcAttributeRoutes();

            //routes.MapRoute("NewRoute", "App/Do{action}", new { controller = "Home", id = UrlParameter.Optional });

            //routes.Add(new Route("SayHello", new CustomRouteHandler()));

            routes.Add(new LegacyRoute("~/articles/Windows_3.1_Overview.html", "~/old/.NET_1.0_Class_Library"));

            routes.MapRoute("MyRoute", "{controller}/{action}", new { controller = "Home", action = "Index" });
            routes.MapRoute("MyOtherRoute", "App/{action}", new { controller = "Home" });
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace UrlsAndRoutes.Controllers
{
    public class LegacyController : Controller
    {
        public ActionResult GetLegacyURL(string legacyURL)
        {
            return View((object)legacyURL);
        }
    }
}

GetLegacyURL.cshtml

@model string
@{
    ViewBag.Title = "GetLegacyURL";
    Layout = null;
}
<h2>GetLegacyURL</h2>
The URL requested was: @Model

@模型字符串
@{
ViewBag.Title=“GetLegacyURL”；
布局=空；
}
GetLegacyURL
请求的URL为：@Model

我不知道该怎么做。我总是得到404错误（）。永远不会调用LegacyRoute.cs中GetRouteData中的方法。如果我删除了。从URL看，代码运行良好。有人能给点建议或帮助吗

---

奇怪的是，没有人抱怨代码不起作用

尝试上面的代码，这应该是可行的

---

Malinda Sanjaka

第445页提供了解决方案。您需要编辑IIS Express设置

在应用程序运行时，右键单击任务栏上的IIS Express图标->显示所有应用程序->单击要配置的站点->单击配置文件

搜索

System.Web.Routing.UrlRoutingModule

删除前提条件属性值，使该行变为

重新启动应用程序，即可准备就绪