ASP.Net 中的路由保留字

问题描述

我有一个旧 url，我希望将其映射到我的 ASP.Net MVC 应用程序中的路由

I have a legacy url that I wish to map to a route in my ASP.Net MVC application

e.g. http://my.domain.com/article/?action=detail&item=22

现在在路由创建中 action 有一个特殊的意义，所以我要创建这条路由?控制器是一个 RedirectController，动作是 Item.

Now in route creation action has a special meaning so my to create this route? The controller is a RedirectController and the action is Item.

routes.MapRoute(
            name: "Redirect",
            url: "article",
            defaults:new { controller = "redirect", action = "item"}
            );

所以我的问题是查询字符串中的 action 被 defaults 中的 action 覆盖.有没有办法解决这个问题?

So my problem is that action in the query string gets overwritten by the action in the defaults. Is there a way to get around this?

推荐答案

我已经成功地使用自定义 ModelBinder 破解了它.我创建了一个名为 QueryString

I have managed to crack it using a custom ModelBinder. I create a basic class called QueryString

    public class QueryString
    {
            private readonly IDictionary<string,string> _pairs;

            public QueryString()
            {
                    _pairs = new Dictionary<string, string>();
            }

            public void Add(string key, string value)
            {
                    _pairs.Add(key.ToUpper(), value);
            }

            public string Get(string key)
            {
                    return _pairs[key.ToUpper()];
            }

            public bool Contains(string key)
            {
                    return _pairs.ContainsKey(key.ToUpper());
            }
    }

然后我为此创建我的自定义活页夹:-

Then I create my custom binder for that:-

    public class QueryStringModelBinder : IModelBinder
    {
            public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
            {
                    var queryString = new QueryString();
                    var keys = controllerContext.HttpContext.Request.QueryString.AllKeys;

                    foreach (var key in keys)
                    {
                            queryString.Add(key, controllerContext.HttpContext.Request.QueryString[key]);
                    }

                    return queryString;
            }
    }

在我的 Global.asax 中注册:-

In my Global.asax I register it:-

ModelBinders.Binders.Add(typeof(QueryString), new QueryStringModelBinder());

现在我可以在我的 RedirectController 中使用它:-

Now I can use that in my RedirectController:-

public RedirectToRouteResult Item(QueryString queryString)
{
    // user QueryString object to get what I need
    // e.g. queryString.Get("action");
}

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