如何确定是否任意URL定义路由匹配

本文介绍了如何确定是否任意URL定义路由匹配的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我如何判断一个字符串特定命名路由匹配？

我有一个这样的路线：

  routes.MapRoute（
    FindYourNewRental
    发现 - 你的新租赁/ {市场} / {}社区的.html
    新{控制器=FindYourNewRental，行动=社区}
    ）;字符串的URL =http://www.website.com/find-your-new-rental/northerncalifornia/sacramento.html

我如何编程告诉如果URL的字符串，路由匹配？事情是这样的：

  //与指定路线FindYourNewRental匹配的网址
如果（IsRouteMatch（URL，FindYourNewRental））
{
    // 做一点事
}公共BOOL IsRouteMatch（URL字符串，字符串routeName）
{
     //我如何code这个功能
}

解决方案

我解决了这个通过添加创建一个新的HttpContext与所提供的网址和应用程序的路径，并使用它来获取基础上的RouteData实例的定制RouteInfo类新的HttpContext对象。那么我可以评估控制器和动作值，看看哪条路线被匹配。我有这样的接线对Uri类的扩展方法。这感觉有点hackish，我希望有一个更清洁的方式做到这一点，所以我会离开的问题，以防有人开放的人有一个更好的解决方案。

ROUTEINFO CLASS：

 公共类RouteInfo
    {
        公共RouteInfo（数据的RouteData）
        {
            的RouteData =数据;
        }        公共RouteInfo（URI URI，串applicationPath）
        {
            的RouteData = RouteTable.Routes.GetRouteData（新InternalHttpContext（URI，applicationPath））;
        }        公众的RouteData的RouteData {搞定;私人集; }        私有类InternalHttpContext：HttpContextBase
        {
            私人只读型Htt prequestBase _REQUEST;            公共InternalHttpContext（URI URI，字符串applicationPath）：基地（）
            {
                _request =新InternalRequestContext（URI，applicationPath）;
            }            公共覆盖的Htt prequestBase请求{{返回_request; }}
        }        私有类InternalRequestContext：Htt的prequestBase
        {
            私人只读字符串_ap prelativePath;
            私人只读字符串_pathInfo;            公共InternalRequestContext（URI URI，字符串applicationPath）：基地（）
            {
                _pathInfo =; //uri.Query; （这是造成问题，看评论 - 斯图尔特）                如果（String.IsNullOrEmpty（applicationPath）||！uri.AbsolutePath.StartsWith（applicationPath，StringComparison.OrdinalIgnoreCase））
                    _ap prelativePath = uri.AbsolutePath;
                其他
                    _ap prelativePath = uri.AbsolutePath.Substring（applicationPath.Length）;
            }            公共重写字符串鸭$ P $ {plativeCurrentExecutionFilePath获得{返回String.Concat（〜，_ap prelativePath）; }}
            公众覆盖字符串PATHINFO {{返回_pathInfo; }}
        }
    }

URI扩展方法：

  ///＆LT;总结＆gt;
    ///为Uri类扩展方法
    ///＆LT; /总结＆gt;
    公共静态类UriExtensions
    {
        ///＆LT;总结＆gt;
        ///表示提供的URL是否基于在Global.asax中定义的MVC路由表中指定的控制器和动作值相匹配。
        ///＆LT; /总结＆gt;
        ///＆LT; PARAM NAME =URI获得包含的URL来评价474上的Uri对象; /参数＆GT;
        ///＆LT; PARAM NAME =controllerName＆gt;该控制器类的匹配LT的名称和/参数＆GT;
        ///＆LT; PARAM NAME =actionName＆gt;在操作方法的名称匹配＆LT; /参数＆GT;
        ///＆LT;退货和GT;真如果提供的URL映射到所提供的控制器类和动作方法，否则为false＆LT; /回报＆GT;
        公共静态布尔IsRouteMatch（此URI URI，串controllerName，串actionName）
        {
            RouteInfo routeInfo =新RouteInfo（URI，HttpContext.Current.Request.ApplicationPath）;
            回报（routeInfo.RouteData.Values [控制器]的ToString（）== controllerName和放大器;＆安培; routeInfo.RouteData.Values [行动]的ToString（）== actionName）;
        }
    }

用法：

 乌里URL =新的URI（http://www.website.com/find-your-new-rental/northerncalifornia/sacramento.html）;如果（url.IsRouteMatch（FindYourNewRental，社区））
{
    // 做一点事
}

或

 如果（Request.Url.IsRouteMatch（FindYourNewRental，社区））
    {
        // 做一点事
    }

好处：由于RouteInfo类给我回的RouteData的一个实例，我可以访问路径参数也是如此。这导致了另一种创造开放的扩展方法：

 公共静态字符串GetRouteParameterValue（此URI URI，串paramaterName）
        {
            RouteInfo routeInfo =新RouteInfo（URI，HttpContext.Current.Request.ApplicationPath）;
            返回routeInfo.RouteData.Values [paramaterName]！= NULL？ routeInfo.RouteData.Values [paramaterName]的ToString（）：空;
        }

现在哪些可以用于像这样：

 字符串someValue中= url.GetRouteParameterValue（参数名称）;

How can I tell if a string matches a particular named route?

I have a route like this:

routes.MapRoute(
    "FindYourNewRental",
    "find-your-new-rental/{market}/{community}.html",
    new { controller = "FindYourNewRental", action = "Community" }
    );

string url = "http://www.website.com/find-your-new-rental/northerncalifornia/sacramento.html"

How can I programmatically tell if the 'url' string matches that route? Something like this:

// matches url with the named route "FindYourNewRental"
if (IsRouteMatch(url, "FindYourNewRental"))
{
    // do something
}

public bool IsRouteMatch(string url, string routeName)
{
     // How do I code this function
}

解决方案

I solved this by adding a custom RouteInfo class which creates a new HttpContext with the supplied url and application path and uses that to obtain an instance of RouteData based on the new HttpContext object. I can then evaluate the Controller and Action values to see which route was matched. I have this wired up to an extension method on the Uri class. It feels a bit hackish and I was hoping there was a cleaner way to do this so I'll leave the question open in case someone else has a better solution.

ROUTEINFO CLASS:

public class RouteInfo
    {
        public RouteInfo(RouteData data)
        {
            RouteData = data;
        }

        public RouteInfo(Uri uri, string applicationPath)
        {
            RouteData = RouteTable.Routes.GetRouteData(new InternalHttpContext(uri, applicationPath));
        }

        public RouteData RouteData { get; private set; }

        private class InternalHttpContext : HttpContextBase
        {
            private readonly HttpRequestBase _request;

            public InternalHttpContext(Uri uri, string applicationPath) : base()
            {
                _request = new InternalRequestContext(uri, applicationPath);
            }

            public override HttpRequestBase Request { get { return _request; } }
        }

        private class InternalRequestContext : HttpRequestBase
        {
            private readonly string _appRelativePath;
            private readonly string _pathInfo;

            public InternalRequestContext(Uri uri, string applicationPath) : base()
            {
                _pathInfo = ""; //uri.Query; (this was causing problems, see comments - Stuart)

                if (String.IsNullOrEmpty(applicationPath) || !uri.AbsolutePath.StartsWith(applicationPath, StringComparison.OrdinalIgnoreCase))
                    _appRelativePath = uri.AbsolutePath;
                else
                    _appRelativePath = uri.AbsolutePath.Substring(applicationPath.Length);
            }

            public override string AppRelativeCurrentExecutionFilePath { get { return String.Concat("~", _appRelativePath); } }
            public override string PathInfo { get { return _pathInfo; } }
        }
    }

URI EXTENSION METHOD:

    /// <summary>
    /// Extension methods for the Uri class
    /// </summary>
    public static class UriExtensions
    {
        /// <summary>
        /// Indicates whether the supplied url matches the specified controller and action values based on the MVC routing table defined in global.asax.
        /// </summary>
        /// <param name="uri">A Uri object containing the url to evaluate</param>
        /// <param name="controllerName">The name of the controller class to match</param>
        /// <param name="actionName">The name of the action method to match</param>
        /// <returns>True if the supplied url is mapped to the supplied controller class and action method, false otherwise.</returns>
        public static bool IsRouteMatch(this Uri uri, string controllerName, string actionName)
        {
            RouteInfo routeInfo = new RouteInfo(uri, HttpContext.Current.Request.ApplicationPath);
            return (routeInfo.RouteData.Values["controller"].ToString() == controllerName && routeInfo.RouteData.Values["action"].ToString() == actionName);
        }
    }

USAGE:

Uri url = new Uri("http://www.website.com/find-your-new-rental/northerncalifornia/sacramento.html");

if (url.IsRouteMatch("FindYourNewRental", "Community"))
{
    // do something
}

if (Request.Url.IsRouteMatch("FindYourNewRental", "Community"))
    {
        // do something
    }

ADDED BONUS: Because the RouteInfo class gives me back an instance of RouteData, I can access the route parameters as well. This led to the creation of another Uri extension method:

public static string GetRouteParameterValue(this Uri uri, string paramaterName)
        {
            RouteInfo routeInfo = new RouteInfo(uri, HttpContext.Current.Request.ApplicationPath);
            return routeInfo.RouteData.Values[paramaterName] != null ? routeInfo.RouteData.Values[paramaterName].ToString() : null;
        }

Which can now be used like so:

string someValue = url.GetRouteParameterValue("ParameterName");

这篇关于如何确定是否任意URL定义路由匹配的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！