c# - ASP.NET MVC - 找到与 Controller 匹配的多种类型

Question

当两个 Controller 同名时，我遇到了一个常见的错误:

Multiple types were found that match the controller named 'Items'. This can happen if the route that services this request ('{controller}/{action}/{id}') does not specify namespaces to search for a controller that matches the request. If this is the case, register this route by calling an overload of the 'MapRoute' method that takes a 'namespaces' parameter.

The request for 'Items' has found the following matching controllers:

Stock.Controllers.ItemsController

Stock.Areas.Admin.Controllers.ItemsController

这是真的，因为我在不同的命名空间中有两个具有此名称的 Controller (如上面的错误中所命名)。但是，我看到的大多数修复都是将命名空间添加到默认根，例如

    routes.MapRoute(
        "Default", // Route name
        "{controller}/{action}/{id}", // URL with parameters
        new { controller = "Home", action = "Index", id = UrlParameter.Optional }, // Parameter defaults
        new string[] { "Stock.Controllers" }
    );

在我的 AdminAreaRegistration.cs 文件中，创建的默认路由是:

    context.MapRoute(
        "Admin_default",
        "Admin/{controller}/{action}/{id}",
        new { action = "Index", id = UrlParameter.Optional }
    );

所以我尝试将命名空间添加到该路由，但这也没有解决它，例如

    context.MapRoute(
        "Admin_default",
        "Admin/{controller}/{action}/{id}",
        new { action = "Index", id = UrlParameter.Optional },
        new string[] { "Stock.Areas.Admin.Controllers" }
    );

我已确保 AreaRegistration.RegisterAllAreas 被调用，例如

protected void Application_Start()
{
    AreaRegistration.RegisterAllAreas();
    FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
    RouteConfig.RegisterRoutes(RouteTable.Routes);
}

任何人都可以发现我遗漏的东西或建议我应该做些什么来让两个 Controller 正常工作吗？

谢谢

Answer 1

我找到了解决我问题的方法，我必须通过“ControllerBuilder.Current.DefaultNamespaces.Add”方法在应用程序启动事件上添加默认命名空间:

protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            ControllerBuilder.Current.DefaultNamespaces.Add("Stock.Controllers"); // Add This
        }