是否可以基于子域创建ASP.NET MVC路由？

Question

是否可以使用ASP.NET MVC路由使用子域信息来确定其路由？例如:

• user1 .domain.com去了一个地方
• user2 .domain.com转到另一个？

或者,我可以这样做,所以这两个都与username参数进入相同的控制器/动作？

Answer 1

您可以通过创建新路由并将其添加到global.asax中RegisterRoutes中的routes集合来实现.以下是自定义Route的一个非常简单的示例:

public class ExampleRoute : RouteBase
{

    public override RouteData GetRouteData(HttpContextBase httpContext)
    {
        var url = httpContext.Request.Headers["HOST"];
        var index = url.IndexOf(".");

        if (index < 0)
            return null;

        var subDomain = url.Substring(0, index);

        if (subDomain == "user1")
        {
            var routeData = new RouteData(this, new MvcRouteHandler());
            routeData.Values.Add("controller", "User1"); //Goes to the User1Controller class
            routeData.Values.Add("action", "Index"); //Goes to the Index action on the User1Controller

            return routeData;
        }

        if (subDomain == "user2")
        {
            var routeData = new RouteData(this, new MvcRouteHandler());
            routeData.Values.Add("controller", "User2"); //Goes to the User2Controller class
            routeData.Values.Add("action", "Index"); //Goes to the Index action on the User2Controller

            return routeData;
        }

        return null;
    }

    public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values)
    {
        //Implement your formating Url formating here
        return null;
    }
}

Answer 2

要在保留标准MVC5路由功能的同时捕获子域,请使用以下SubdomainRoute派生的类Route.

此外,SubdomainRoute允许子域可选地指定为查询参数,制作sub.example.com/foo/bar和example.com/foo/bar?subdomain=sub等效.这允许您在配置DNS子域之前进行测试.查询参数(在使用时)通过由Url.Action等生成的新链接传播.

query参数还允许使用Visual Studio 2013进行本地调试,而无需使用netsh进行配置或以管理员身份运行.默认情况下,IIS Express仅在未提升时绑定到localhost ; 它不会绑定到sub.localtest.me这样的同义主机名.

class SubdomainRoute : Route
{
    public SubdomainRoute(string url) : base(url, new MvcRouteHandler()) {}

    public override RouteData GetRouteData(HttpContextBase httpContext)
    {
        var routeData = base.GetRouteData(httpContext);
        if (routeData == null) return null; // Only look at the subdomain if this route matches in the first place.
        string subdomain = httpContext.Request.Params["subdomain"]; // A subdomain specified as a query parameter takes precedence over the hostname.
        if (subdomain == null) {
            string host = httpContext.Request.Headers["Host"];
            int index = host.IndexOf('.');
            if (index >= 0)
                subdomain = host.Substring(0, index);
        }
        if (subdomain != null)
            routeData.Values["subdomain"] = subdomain;
        return routeData;
    }

    public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values)
    {
        object subdomainParam = requestContext.HttpContext.Request.Params["subdomain"];
        if (subdomainParam != null)
            values["subdomain"] = subdomainParam;
        return base.GetVirtualPath(requestContext, values);
    }
}

为方便起见,请按照MapSubdomainRoute您的RegisterRoutes方法调用以下方法MapRoute:

static void MapSubdomainRoute(this RouteCollection routes, string name, string url, object defaults = null, object constraints = null)
{
    routes.Add(name, new SubdomainRoute(url) {
        Defaults = new RouteValueDictionary(defaults),
        Constraints = new RouteValueDictionary(constraints),
        DataTokens = new RouteValueDictionary()
    });
}

最后,为了方便地访问子域(来自真正的子域或查询参数),使用此Subdomain属性创建Controller基类是有帮助的:

protected string Subdomain
{
    get { return (string)Request.RequestContext.RouteData.Values["subdomain"]; }
}

Answer 3

这不是我的工作,但我必须在这个答案上添加它.

这是一个很好的解决方案.Maartin Balliauw编写的代码创建了一个DomainRoute类,可以与普通路由非常相似地使用.

http://blog.maartenballiauw.be/post/2009/05/20/ASPNET-MVC-Domain-Routing.aspx

样品使用就像这样......

routes.Add("DomainRoute", new DomainRoute( 
    "{customer}.example.com", // Domain with parameters 
    "{action}/{id}",    // URL with parameters 
    new { controller = "Home", action = "Index", id = "" }  // Parameter defaults 
))

;