如何主机名被包括在MVC2路由映射？ [英] How can host name be included in MVC2 route mapping?

问题描述

我有3域名都在同一MVC2应用程序指出。我现在所得到的是作为一个交通警察，并重定向到控制器和视图为特定的主机名HomeController的。但我不喜欢的URI结果这导致...

I've got 3 domain names all pointed at the same MVC2 application. What I've got now is the homecontroller acting as a traffic cop and redirecting to controllers and views for the specific host name. But I don't like the URI result this causes...

例如：
www.webhost1.com/webhost1/imagegallery
www.webhost2.com/webhost2/imagegallery

ex: www.webhost1.com/webhost1/imagegallery www.webhost2.com/webhost2/imagegallery

我preFER有：

www.webhost1.com/imagegallery

www.webhost1.com/imagegallery

有没有办法在Global.asax中定义的路线将包括路由评测主机名称，以便URI看起来少冗余？

Is there a way to define the routes in global.asax that would include the host name in the routing evaluation so that the URI looks less redundant?

推荐答案

啊哈！它采取了一些摆弄的（和老书峰），但我想我已经解决了它。

Aha!, it took a bit of fiddling (and a peak in and old book) but I think I've solved it.

您需要创建一个自定义路由约束。
这是我很快做出了一句：

You need to create a custom route constraint. This is the one I made quickly:

 public class hostnameConstraint : IRouteConstraint
    {
        protected string _hostname;

        public hostnameConstraint (string hostname)
        {
            _hostname = hostname;
        }

        bool IRouteConstraint.Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
        {
            if (httpContext.Request.Url.Host == _hostname)
                return true;
            return false;
        }
    }

然后你可以将它添加到您的路线，并指定你想要的路线适用的主机名。像这样：

Then you simply add it to your routes and specify which hostname you want the route to apply to. like so:

routes.MapRoute(
            "ImageGallery", "{controller}/{action}",
            new { controller = "Home", action = "Index"},
            new { hostname = new hostnameConstraint("webhost1.com") }
        );

routes.MapRoute(
            "ImageGallery", "{controller}/{action}",
            new { controller = "Home", action = "Index"},
            new { hostname = new hostnameConstraint("webhost2.com") }
        );

和等等，等等。我不知道你的路由是如何奠定的，但问题是，现在你可以有一个主机名独立路线。这应该让你做什么你了。

and so on and so forth. I don't know how your routes are layed out, but the point is that now you can have seperate routes for the hostnames. Which should enable you to do what you're after.

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