Question

Apress第16章（路由传入URL）中的Pro ASP.NET MVC 5一书中提供的代码该示例与遗留URL有关。接下来，我将为自定义路由，路由配置，控制器和视图提供代码示例。

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;
        }
    }
}

RouteConfig.cs

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" });
        }
    }
}

LegacyController.cs

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

我无法想象如何运作。我总是得到404错误（http://my.machine/articles/Windows_3.1_Overview.html）。永远不会调用LegacyRoute.cs中GetRouteData中的方法。如果我删除了。从URL，代码工作正常。任何人都可以提供一些建议或帮助吗？

奇怪的是，没有人抱怨代码不起作用。

Answer 1

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 - ＆gt;显示所有应用程序 - ＆gt;点击您要配置的网站 - ＆gt;单击配置文件

搜索System.Web.Routing.UrlRoutingModule

删除preCondition属性值，使该行变为<add name="UrlRoutingModule-4.0" type="System.Web.Routing.UrlRoutingModule" preCondition="" />

重新启动应用程序，您已做好准备。

Answer 2

routes.MapMvcAttributeRoutes（）;

        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" });

尝试使用上面的代码，这应该可以使用。

Malinda Sanjaka

MVC 5自定义路由 - LegacyRoute中的错误404：RouteBase（第16章中来自Apress的Pro ASP.NET MVC 5一书中的示例）

2 个答案: