MVC 4包罗万象的路线从未达到过 [英] MVC 4 catch all route never reached

问题描述

当试图建立一个包罗万象的MVC 4所有航线（这是我发现的几个例子，并根据我的code）它返回一个404错误。我在IIS 7.5上运行此。这似乎是一个简单的解决方案，所以我缺少什么？

一个说明，如果我移动默认的路线上面的包罗万象的路线它的作品。但当然再没有其它控制器都曾经达到。

下面是code：

Route.Config：

  routes.MapRoute（
            名称：默认，
            网址：{控制器} / {行动} / {ID}
            默认：新{控制器=家，行动=索引，ID = UrlParameter.Optional}
        ）;        routes.MapRoute（
            包罗万象，
            {*} dynamicRoute
            新{控制器=包罗万象，行动=ChoosePage}
        ）;
 

控制器：

 公共类CatchAllController：控制器
{    公众的ActionResult ChoosePage（字符串dynamicRoute）
    {
        ViewBag.Path = dynamicRoute;
        返回查看（）;
    }}
 

解决方案

由于创建包罗万象路线的最终目标是要能够处理动态URL和我无法找到上述直接回答原来的问题，我从不同的角度来处理我的研究。在这方面，我碰到这个博客帖子就来了：自定义404时，没有路由匹配

该解决方案允许一个给定的URL中的多个部分的处理
（即www.mysite.com/this/is/a/dynamic/route）

下面是最后的定制控制器code：

 公众覆盖一个IController CreateController（System.Web.Routing.RequestContext的RequestContext，串controllerName）
 {
     如果（RequestContext的== NULL）
     {
         抛出新的ArgumentNullException（RequestContext的）;
     }     如果（String.IsNullOrEmpty（controllerName））
     {
         抛出新的ArgumentException（MissingControllerName）;
     }     VAR controllerType = GetControllerType（RequestContext的，controllerName）;     //这是通常会返回一个404
     //与路线包罗万象控制器替换
     如果（controllerType == NULL）
     {
        //建立与各阶层的动态路径变量
        VAR dynamicRoute =的string.join（/，requestContext.RouteData.Values​​.Values​​）;        //路线全部接收控制器
        controllerName =包罗万象;
        controllerType = GetControllerType（RequestContext的，controllerName）;
        requestContext.RouteData.Values​​ [控制器] = controllerName;
        requestContext.RouteData.Values​​ [行动] =ChoosePage;
        requestContext.RouteData.Values​​ [dynamicRoute] = dynamicRoute;
     }     一个IController控制器= GetControllerInstance（RequestContext的，controllerType）;
     返回控制器;
 }
 

When attempting to create a catch all route in MVC 4 (something I've found several examples of, and based my code on) it returns a 404 error. I'm running this on IIS 7.5. This seems like a straight forward solution, so what am I missing?

One note, if I move the "CatchAll" route above the "Default" route it works. But of course then none of the other controllers are ever reached.

Here is the code:

Route.Config:

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

        routes.MapRoute(
            "CatchAll",
            "{*dynamicRoute}",
            new { controller = "CatchAll", action = "ChoosePage" }
        );

Controller:

public class CatchAllController : Controller
{

    public ActionResult ChoosePage(string dynamicRoute)
    {
        ViewBag.Path = dynamicRoute;
        return View();
    }

}

解决方案

Since the ultimate goal of creating the catchall route was to be able to handle dynamic urls and I was unable to find a direct answer to the original issue above, I approached my research from a different perspective. In doing so I came across this blog post: Custom 404 when no route matches

This solution allows handling of multiple sections within a given url (i.e. www.mysite.com/this/is/a/dynamic/route)

Here is the final custom controller code:

public override IController CreateController(System.Web.Routing.RequestContext requestContext, string controllerName)
 {
     if (requestContext == null)
     {
         throw new ArgumentNullException("requestContext");
     }

     if (String.IsNullOrEmpty(controllerName))
     {
         throw new ArgumentException("MissingControllerName");
     }

     var controllerType = GetControllerType(requestContext, controllerName);

     // This is where a 404 is normally returned
     // Replaced with route to catchall controller
     if (controllerType == null)
     {
        // Build the dynamic route variable with all segments
        var dynamicRoute = string.Join("/", requestContext.RouteData.Values.Values);

        // Route to the Catchall controller
        controllerName = "CatchAll";
        controllerType = GetControllerType(requestContext, controllerName);
        requestContext.RouteData.Values["Controller"] = controllerName;
        requestContext.RouteData.Values["action"] = "ChoosePage";
        requestContext.RouteData.Values["dynamicRoute"] = dynamicRoute;
     }

     IController controller = GetControllerInstance(requestContext, controllerType);
     return controller;
 }

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