Asp.net MVC 5.0注册表端口不工作

任何人都知道为什么这不起作用，我已经在谷歌上搜索过了，但似乎什么都不起作用。我想做的就是允许www.abcdefg.com/username映射到个人资料页面，但它不起作用，我也不知道为什么

public static void RegisterRoutes(RouteCollection routes)
        {
         routes.MapRoute(
        "Default",                                              // Route name
        "{controller}/{action}/{id}",                           // URL with parameters
        new { controller = "Home", action = "Index", id = "" }  // Parameter defaults
        , new { controller = @"(admin|help|profile|Settings)" } // Constraints
    );
                routes.MapRoute(
                  "Users",
                  "{username}",
                  new { controller = "Home", action = "Index", username = "" });
            }

---

您必须将默认路由添加为最后一条路由

public static void RegisterRoutes(RouteCollection routes)
        {
         routes.MapRoute(
           "Users",
           "{username}",
           new { controller = "Home", action = "Index", username = "" });

         routes.MapRoute(
           "Default",                                              // Route name
           "{controller}/{action}/{id}",                           // URL with parameters
           new { controller = "Home", action = "Index", id = "" }  // Parameter defaults
           , new { controller = @"(admin|help|profile|Settings)" } // Constraints
    );

---

您是否测试过localhost/Home/Index/username是否有效？我将从这个开始。换句话说，在controller Home中是否有一个名为Index的控制器操作，它接受标记为username的字符串参数？