.Net Core 2.2 Areas 路由，第一个MapAreaRoute 设置匹配多个Controller

            app.UseMvc(routes =>
            {
                //routes.MapRoute(
                //   name: "areas",
                //   template: "{area:exists}/{controller=Home}/{action=Index}/{id?}"
                // ); 
                routes.MapAreaRoute(
                name: "MyAreaAdmin",
                areaName: "Admin",
                template: "Admin/{controller=home}/{action=index}/{id?}");

                routes.MapAreaRoute(
                   name: "MyAreaAPI",
                   areaName: "API",
                   template: "API/{controller=home}/{action=index}/{id?}");

                routes.MapRoute(
                    name: "default",
                    template: "{controller=Home}/{action=Index}/{id?}");
            });

    services.AddMvc(options =>
    { 
        //Core 2.2+ 默认启动端点路由
        options.EnableEndpointRouting = false;
    }).SetCompatibilityVersion(CompatibilityVersion.Version_2_2);