c# - 特殊 MVC 路由不起作用

Question

我的 MVC 项目中的路由无法正常工作...

我希望我所有的 View 都在 Views > Shared 文件夹中，如下所示:

Error.cshtml (default)
Index.cshtml (default)
Overview.cshtml (custom that I made)
Recordings.cshtml (custom that I made)

然后我创建了一个共享 Controller 来处理所有这样的 View :

public class SharedController : Controller
{
    public ActionResult Index()
    {
        return View();
    }

    public ActionResult Error()
    {
        return View();
    }

    public ActionResult Overview()
    {
        return View();
    }

    public ActionResult Recordings()
    {
        return View();
    }
}

我的 RouteConfig.cs 看起来像这样:

public static void RegisterRoutes(RouteCollection routes)
{    
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

    // Map to specific pages under Shared controller:
    routes.MapRoute("SharedPages", "{action}/{id}",
        new { controller = "Shared", action = @"Overview|Recordings", id = UrlParameter.Optional });

    // Use the default rout for all other pages:
    routes.MapRoute("Default", "{controller}/{action}/{id}",
        new { controller = "Shared", action = "Index", id = UrlParameter.Optional }
    );

    // Show the Error page for anything else (404):
    routes.MapRoute("Error", "{*url}",
        new { controller = "Shared", action = "Error" }
    );
}

我希望路由像这样工作:

://(url)/ (root - no action specified) --> Shared/Index.cshtml
://(url)/Index --> Shared/Index.cshtml
://(url)/Overview --> Shared/Overview.cshtml
://(url)/Recordings --> Shared/Recordings.cshtml
://(url)/whatever (or if an error occurs) --> Shared/Error.cshtml

但它没有按预期工作。如果我转到 ://(url)/(root)，我会得到一个 HTTP 404 - 找不到资源。 例如，如果我转到 ://(url)/Overview，它工作正常。

我怎样才能让它像我想要的那样工作？

Answer 1

映射路线的顺序很重要，首先匹配的路线获胜。这意味着即使那里没有资源，它也会使用它匹配的路由。

public static void RegisterRoutes(RouteCollection routes)  
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

    // Use specific rout for all other pages:
    routes.MapRoute("WhateverA", "WhateverA/{action}/{id}",
        new { controller = "WhateverA", action = "Index", id = UrlParameter.Optional }
    );

    routes.MapRoute("WhateverB", "WhateverB/{action}/{id}",
        new { controller = "WhateverB", action = "Index", id = UrlParameter.Optional }
    );

    // Map to specific pages under Shared controller:
    routes.MapRoute("RootPages", "{action}/{id}",
        new { controller = "Shared", action = "Index", id = UrlParameter.Optional });

    // Show the Error page for anything else (404):
    routes.MapRoute("Error", "{*url}",
        new { controller = "Shared", action = "Error" }
    );
}

Default 和SharedPages 路由的问题在于它们相互冲突。如果存在，您可能需要为其他 Controller 提供特定路由。否则，另一种选择是对其他 Controller 使用属性路由，对根路由和错误使用基于约定的路由

public static void RegisterRoutes(RouteCollection routes)  
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

    //Attribute routing
    routes.MapMvcAttributeRoutes();

    // Map to specific pages under Shared controller:
    routes.MapRoute("RootPages", "{action}/{id}",
        new { controller = "Shared", action = "Index", id = UrlParameter.Optional });

    // Show the Error page for anything else (404):
    routes.MapRoute("Error", "{*url}",
        new { controller = "Shared", action = "Error" }
    );
}

相应地装饰 Controller

[RoutePrefix("WhatEver")]
public class WhatEverController : Controller {
    //GET whatever
    [HttpGet]
    [Route("")]
    public ActionResult Index() { ... }
}