MVC自定义路由子域

2018-06-12 20:54:00

我正在尝试构建一个连接到MVC区域的“租户”子域路由。在这种情况下，我有一个名为“Tenant”的区域，它有两个控制器; 公共和管理员。我的自定义路由用于抓取子域，如果它匹配然后路由到适当的控制器行动区。

这个项目的基础来自以下http://www.matrichard.com/post/asp.net-mvc-5-routing-with-subdomain

我遇到的问题是在自定义子域路由中。当我点击Public/Index Route时， routeData返回null，我看到下面的错误。虽然如果路由是/admin它将返回正确的routeData 。

'/'应用程序中的服务器错误。

匹配的路线不包含“控制器”路线值，这是必需的。

它似乎也总是使用RouteDebugger工具进行匹配，这是我的问题的线索吗？

示例路线：

控制器=公共行动=指数，面积=租户

http://tenant1.mydomain.com:8080/

http://tenant1.mydomain.com:8080/logon

controller = Admin action = Index，area = Tenant

http://tenant1.mydomain.com:8080/admin

http://tenant1.mydomain.com:8080/admin/edit

SubdomainRouteP.cs

public class SubdomainRouteP : Route
{
    public string Domain { get; set; }

    public SubdomainRouteP(string domain, string url, RouteValueDictionary defaults): this(domain, url, defaults, new MvcRouteHandler())
    {
    }

    public SubdomainRouteP(string domain, string url, object defaults): this(domain, url, new RouteValueDictionary(defaults), new MvcRouteHandler())
    {
    }

    public SubdomainRouteP(string domain, string url, object defaults, IRouteHandler routeHandler): this(domain, url, new RouteValueDictionary(defaults), routeHandler)
    {
    }

    public SubdomainRouteP(string domain, string url, RouteValueDictionary defaults, IRouteHandler routeHandler): base(url, defaults, routeHandler)
    {
        this.Domain = domain;
    }

    public override RouteData GetRouteData(HttpContextBase httpContext)
    {
        // 
        // routeData object returns null in some cases 
        // 
        var routeData = base.GetRouteData(httpContext);

        var subdomain = httpContext.Request.Url.Host.Split('.').First();

        string[] blacklist = { "www", "mydomain", "localhost" };

        // This will ignore anything that is not a client tenant prefix
        if (blacklist.Contains(subdomain))
        {
            return null; // Continue to the next route
        }

        // Why is this NULL?
        if (routeData == null)
        {

            routeData = new RouteData(this, new MvcRouteHandler());

        }

        routeData.DataTokens["Area"] = "Tenant";
        routeData.DataTokens["UseNamespaceFallback"] = bool.FalseString;
        routeData.Values.Add("subdomain", subdomain);

        // IMPORTANT: Always return null if there is no match.
        // This tells .NET routing to check the next route that is registered.
        return routeData;
    }

}

RouteConfig.cs

        routes.Add("Admin_Subdomain", new SubdomainRouteP(
            "{client}.mydomain.com", //of course this should represent the real intent…like I said throwaway demo project in local IIS
            "admin/{action}/{id}",
            new { controller = "Admin", action = "Index", id = UrlParameter.Optional }));

        routes.Add("Public_Subdomain", new SubdomainRouteP(
            "{client}.mydomain.com", //of course this should represent the real intent…like I said throwaway demo project in local IIS
            "{controller}/{action}/{id}",
            new { controller = "Public", action = "Index", id = UrlParameter.Optional }));

        // This is the MVC default Route
        routes.MapRoute(
            "Default",
            "{controller}/{action}/{id}",
            new { controller = "Home", action = "Index", id = UrlParameter.Optional });

下面的Url给了我RouteDebugger的以下结果。在测试1和2期间，路由仍然匹配/ admin。

测试失败1： http://tenant.mydomain.com/ ： http://tenant.mydomain.com/

测试2失败： http://tenant.mydomain.com/logon ： http://tenant.mydomain.com/logon

成功3： http://tenant.mydomain.com/admin : http://tenant.mydomain.com/admin

匹配Url默认值

真正的 admin/{action}/{id} controller = Admin, action = Index

True {controller}/{action}/{id} controller = Public, action = Index

您链接的帖子有一个错误：当约束或URL不匹配时， base.GetRouteData方法将返回null 。在这种情况下，将子域名添加到路由字典显然会引发异常。在该行之前应该有一个空警戒条款。

public override RouteData GetRouteData(HttpContextBase httpContext)
{
    var routeData = base.GetRouteData(httpContext);
    if (routeData != null)
    {
        routeData.Values.Add("client", httpContext.Request.Url.Host.Split('.').First());
    }
    return routeData;
}

你的路线应该如此。您需要确保在基类返回null（表示URL或约束不匹配，并且我们需要跳过处理此路由）的情况下返回null。

另外，我不确定它是否与将数据直接添加到DataTokens什么不同，但是MVC框架具有IRouteWithArea ，可以实现该IRouteWithArea以配置路由适用的区域。

public class SubdomainRouteP : Route, IRouteWithArea
{
    public string Area { get; private set; }

    public SubdomainRouteP(string area, string url, RouteValueDictionary defaults): this(area, url, defaults, new MvcRouteHandler())
    {
    }

    public SubdomainRouteP(string area, string url, object defaults): this(area, url, new RouteValueDictionary(defaults), new MvcRouteHandler())
    {
    }

    public SubdomainRouteP(string area, string url, object defaults, IRouteHandler routeHandler): this(area, url, new RouteValueDictionary(defaults), routeHandler)
    {
    }

    public SubdomainRouteP(string area, string url, RouteValueDictionary defaults, IRouteHandler routeHandler): base(url, defaults, routeHandler)
    {
        this.Area = area;
    }

    public override RouteData GetRouteData(HttpContextBase httpContext)
    {
        var routeData = base.GetRouteData(httpContext);

        // This will ignore anything where the URL or a constraint doesn't match
        // in the call to base.GetRouteData().
        if (routeData != null)
        {
            var subdomain = httpContext.Request.Url.Host.Split('.').First();

            string[] blacklist = { "www", "mydomain", "localhost" };

            // This will ignore anything that is not a client tenant prefix
            if (blacklist.Contains(subdomain))
            {
                return null; // Continue to the next route
            }

            routeData.DataTokens["UseNamespaceFallback"] = bool.FalseString;
            routeData.Values.Add("subdomain", subdomain);
        }

        // IMPORTANT: Always return null if there is no match.
        // This tells .NET routing to check the next route that is registered.
        return routeData;
    }

}

我无法弄清楚你想用domain参数做什么。该网址很可能会返回域名。因此，您似乎应该在第一个"{controller}/{action}/{id}"路线中有一个约束，否则您将永远不会有通过默认路由的情况。或者，您可以在网址中使用明确的细分，以便区分它（与您的管理路线相同）。

routes.Add("Admin_Subdomain", new SubdomainRouteP(
    "Tenant",
    "admin/{action}/{id}",
    new { controller = "Admin", action = "Index", id = UrlParameter.Optional }));

routes.Add("Public_Subdomain", new SubdomainRouteP(
    "Tenant",
    "public/{action}/{id}",
    new { controller = "Public", action = "Index", id = UrlParameter.Optional }));

// This is the MVC default Route
routes.MapRoute(
    "Default",
    "{controller}/{action}/{id}",
    new { controller = "Home", action = "Index", id = UrlParameter.Optional });

另一个选择是添加另一个构造函数参数，以传递一个显式的有效域列表来检查。

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