特殊 MVC 路由不起作用

Question

我的 MVC 项目中的路由出现问题...

我希望Views > Shared 文件夹中的所有视图都像这样：

Error.cshtml（默认）
Index.cshtml（默认）
Overview.cshtml（我自定义的）
Recordings.cshtml（我定制的）

然后我创建了一个共享控制器来处理所有视图，如下所示：

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 - 未指定操作）--> Shared/Index.cshtml
://(url)/Index --> Shared/Index.cshtml
://(url)/Overview --> Shared/Overview.cshtml
://(url)/Recordings --> Shared/Recordings.cshtml
://(url)/whatever（或者如果发生错误）--> Shared/Error.cshtml

但它没有按预期工作。如果我去://(url)/（root），我会得到一个HTTP 404 - The resource cannot be found. 如果我去例如://(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

您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，它也会匹配它将使用它的路线。

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。如果存在其他控制器，您可能需要为其他控制器提供特定路由。否则，另一个选项是对其他控制器使用属性路由，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" }
    );
}

相应地装饰控制器

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