应用程序根的默认路由

Question

如何让我的 mvc 应用程序路由到未指定的特定 Controller 和 Action？

调试时 http://localhost:54500/ 应该路由到 http://localhost:54500/Home/Index。

目前我有：

routes.MapRoute(
    name: "Root",
    url: "",
    defaults: new { controller = "Home", action = "Index" }
    );

routes.MapRoute(
    name: "Default",
    url: "{controller}/{action}/{id}",
    defaults: new { id = UrlParameter.Optional }
    );

但这总是抛出

The view 'Index' or its master was not found or no view engine supports the searched locations

编辑#1

它应该 redirect/route 到驻留在名为 Home 的 Area 中的视图。只是想澄清一下，有一个 Controller 和一个 Area 都被命名为 Home.

该区域的配置是：

public override void RegisterArea(AreaRegistrationContext context)
{
    context.MapRoute(
        "Home_default",
        "Home/{controller}/{action}/{id}",
        new {action = "Index", id = UrlParameter.Optional}
        );
}

Answer 1

When debugging http://localhost:54500/ should route to http://localhost:54500/Home/Index.

实际上，按照您的配置方式，http://localhost:54500/ 将路由到 HomeController.Index 方法，而不是另一个 URL.

The view 'Index' or its master was not found or no view engine supports the searched locations

这个错误表示路由成功，但是controller返回了一个不存在的view的路径。

既然你也提到你正在使用一个区域并且已经发布了你的配置，那么很清楚发生了什么。您的配置是运行的顺序：

public override void RegisterArea(AreaRegistrationContext context)
{
    context.MapRoute(
        "Home_default",
        "Home/{controller}/{action}/{id}",
        new {action = "Index", id = UrlParameter.Optional}
        );
}

routes.MapRoute(
    name: "Root",
    url: "",
    defaults: new { controller = "Home", action = "Index" }
    );

routes.MapRoute(
    name: "Default",
    url: "{controller}/{action}/{id}",
    defaults: new { id = UrlParameter.Optional }
    );

因此，如果您通过 URL http://localhost:54500/，Area 路线将会错过（因为它不是以 /Home 开头）并且它将匹配 Root 路线。此 Root 路线未通往您所在的地区。有两种方法可以解决此问题。

选项 1 - 将根路由添加到主区域

public override void RegisterArea(AreaRegistrationContext context)
{
    context.MapRoute(
        "Root",
        "",
        new { controller = "Home", action = "Index" }
        );

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

routes.MapRoute(
    name: "Default",
    url: "{controller}/{action}/{id}",
    defaults: new { id = UrlParameter.Optional }
    );

选项 2 - 设置 DataToken 以指示主区域

public override void RegisterArea(AreaRegistrationContext context)
{
    context.MapRoute(
        "Home_default",
        "Home/{controller}/{action}/{id}",
        new {action = "Index", id = UrlParameter.Optional}
        );
}

routes.MapRoute(
    name: "Root",
    url: "",
    defaults: new { controller = "Home", action = "Index" }
    ).DataTokens["area"] = "Home";

routes.MapRoute(
    name: "Default",
    url: "{controller}/{action}/{id}",
    defaults: new { id = UrlParameter.Optional }
    );

Answer 2

在 Core 1.0.1 中，您可以在 Startup.cs 中执行此操作：

 public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            loggerFactory.AddConsole(Configuration.GetSection("Logging"));
            loggerFactory.AddDebug();

            app.UseMvc(routes =>
            {
                routes.MapRoute(name: "areaRoute",
                 template: "{area:exists}/{controller=Home}/{action=Index}");

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

应用程序根的默认路由

Default-Route for root of application

asp.net

asp.net-mvc

routes

url-routing

asp.net-mvc-routing

选项 1 - 将根路由添加到主区域

选项 2 - 设置 DataToken 以指示主区域