找到多个与名为“Home”的控制器匹配的类型。如果为此请求(“{controller}/{action}/{id}”)提供服务的路由在搜索匹配此请求的控制器时没有指定命名空间，则会发生此情况。如果是这样，请通过调用含有“namespaces”参数的“MapRoute”方法的重载来注册此路由。”

 

出现该问题的原因是在默认的Golbal.asax.cs文件中已经注册了默认路由

 

    public class MvcApplication : System.Web.HttpApplication

    {

        public static void RegisterRoutes(RouteCollection routes)

        {

            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

            //routes.MapRoute(

            //    "Default", // 路由名称

            //    "{controller}/{action}/{id}", // 带有参数的 URL

            //    new { controller = "Home", action = "Index", id = UrlParameter.Optional } // 参数默认值

            //);

            routes.MapRoute(

                  "Member",

                  "Member/{action}/{page}",

                  new { controller = "MemberCenter", action = "List" },

                  new { action = @"Index|List|Detail", page = @"\d+" }

                );

            routes.MapRoute(

                  "Default",

                  "{controller}/{action}/{id}",

                  new { controller = "Home", action = "Index", id = UrlParameter.Optional },

                  new string[] { "MvcStudyDemo.Controllers" }

                  );

        }

 

而在AREAS中有注册了一个同名的Controller

        public override void RegisterArea(AreaRegistrationContext context)

        {

            context.MapRoute(

                "Order_default",

                "Order/{controller}/{action}/{id}",

                new { action = "Index", id = UrlParameter.Optional },

                new string[] { "MvcStudyDemo.Areas.Order.Controllers" }

              

            );

        }

解决方法就是在每个注册Router的时候加上命名空间即可。