键 - 值对任意数量的ASP.NET路由 - 这可能吗？ [英] ASP.NET route with arbitrary number of key-value pairs - is it possible?

问题描述

我想处理的URL是这样的：

I'd like to handle URLs like this:

/Id/Key1/Value1/Key2/Value2/Key3/Value3/

现在，我已经建立了一条规则是这样的：

Right now, I have set up a rule like this:

/{id}/{*parameters}

的参数对象是作为一个单一的字符串来所有参与形成响应的动作传递。这并不工作，但我有这几个问题：

The parameters object is passed as a single string to all the actions that are involved in forming the response. This does work, but I have a few problems with it:

1. 每个动作必须解决的字符串本身。我，当然，取得了转动字符串到词典℃的扩展方法;字符串，字符串＆GT; ，但我preFER，如果调度机制，给我的方法词典＆LT;字符串，字符串＆GT; 直接 - 或更好，但实际对作为独立参数。


2. 动作链接仍然可以添加使用传统的格式参数（？键1 =值）。我想我可以写专门的助手跟我想要的格式，但我preFER，如果有一种方法，使现有的重载按照上面的路由规则。

1. Each action must resolve the string for itself. I've, of course, made an extension method that turns the string to a Dictionary<string, string>, but I'd prefer it if the dispatching mechanism gave my methods a Dictionary<string, string> directly - or, better yet, the actual pairs as separate arguments.
2. Action links will still add parameters using the traditional format (?Key1=Value1). I guess I could write specialized helpers with my desired format, but I'd prefer it if there was a way to make the existing overloads follow the above routing rule.

有没有办法做上述？

推荐答案

您可以编写一个定制路线：

You could write a custom route:

public class MyRoute : Route
{
    public MyRoute()
        : base(
            "{controller}/{action}/id/{*parameters}",
            new MvcRouteHandler()
        )
    {
    }

    public override RouteData GetRouteData(HttpContextBase httpContext)
    {
        var rd = base.GetRouteData(httpContext);
        if (rd == null)
        {
            return null;
        }

        string parameters = rd.GetRequiredString("parameters");
        IDictionary<string, string> parsedParameters = YourExtensionMethodThatYouAlreadyWrote(parameters);
        rd.Values["parameters"] = parsedParameters;
        return rd;
    }

    public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values)
    {
        object parameters;
        if (values.TryGetValue("parameters", out parameters))
        {
            var routeParameters = parameters as IDictionary<string, object>;
            if (routeParameters != null)
            {
                string result = string.Join(
                    "/", 
                    routeParameters.Select(x => string.Concat(x.Key, "/", x.Value))
                );
                values["parameters"] = result;
            }
        }
        return base.GetVirtualPath(requestContext, values);
    }
}

这可能是注册这样的：

which could be registered like that:

public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

    routes.Add("my-route", new MyRoute());

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

现在你的控制器动作可以采取以下参数：

and now your controller actions could take the following parameters:

public ActionResult SomeAction(IDictionary<string, string> parameters)
{
    ...
}

至于按照这种模式产生环节而言，它是那样简单：

As far as generating links following this pattern is concerned, it's as simple as:

@Html.RouteLink(
    "Go", 
    "my-route", 
    new {
        controller = "Foo",
        action = "Bar",
        parameters = new RouteValueDictionary(new { 
            key1 = "value1", 
            key2 = "value2",
        }) 
    }
)

或者如果你想要一个＆LT;形式为GT; ：

@using (Html.BeginRouteForm("my-route", new { controller = "Foo", action = "Bar", parameters = new RouteValueDictionary(new { key1 = "value1", key2 = "value2" }) }))
{
    ...    
}

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