[转载]ASP.NET MVC路由匹配检测组件RouteDebug.dll – Capricornus – 博客园.
以前使用RouteMonitor.dll进行MVC路由检测URL路径的映射匹配情况。由于公司电脑没有此组件，所以上网搜了下，结果才发现RouteMonitor.dll已经将名称改为了RouteDebug.dll 。具体参阅 官方网站。 下载地址：http://files.cnblogs.com/Capricornus/RouteDebug-Binary.zip
使用方法:
1. 在MVC项目中添加引用此组件
2. 在全局应用程序类Global.asax.cs中设置代码
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protected void Application_Start() |
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RegisterRoutes(RouteTable.Routes); |
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RouteDebug.RouteDebugger.RewriteRoutesForTesting(RouteTable.Routes); |
3.匹配路由如下图:
我们可以使用Reflector反编译这个RouteDebugger.dll组件，查看一下原理。如图：
RouteDebug中包含了DebugHttpHandler、DebugRoute、DebugRouteHandler、RouteDebugger这4个类。
首先从我们调用RouteDebug.RouteDebugger.RewriteRoutesForTesting的着手。
RouteDebugger类：
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public static class RouteDebugger |
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public static void RewriteRoutesForTesting(RouteCollection routes) |
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using (routes.GetReadLock()) |
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foreach (RouteBase base2 in routes) |
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Route route = base2 as Route; |
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route.RouteHandler = new DebugRouteHandler(); |
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if (route == DebugRoute.Singleton) |
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routes.Add(DebugRoute.Singleton); |
首先，整个代码是使用System.Web.Routing命名空间下的RouteCollection.GetReadLock()锁定的，提供 一个对象，用于管理在从集合中检索对象时的线程安全性;然后遍历我们传过来的路由集合参数。用RouteDebug中的 DebugRouteHandler去替换原有RouteHandler，以便改变Http处理程序的方向，接着将Singletion属性的值添加到路 由结合中。
DebugRoute类:
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public class DebugRoute : Route |
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private static DebugRoute singleton = new DebugRoute(); |
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private DebugRoute() : base("{*catchall}", new DebugRouteHandler()) |
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public static DebugRoute Singleton |
DebugRoute继承与Route类,构造函数实现了构造可捕获所有URL地址的Route。
DebugRouteHandler路由处理程序类:
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public class DebugRouteHandler : IRouteHandler |
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public IHttpHandler GetHttpHandler(RequestContext requestContext) |
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DebugHttpHandler handler = new DebugHttpHandler(); |
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handler.RequestContext = requestContext; |
实现IHttpHanlder接口的实例化对象,传入了一个RequestContext对象实例。
DebugHttpHandler类：
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public class DebugHttpHandler : IHttpHandler |
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private RequestContext <RequestContext>k__BackingField; |
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private static string FormatRouteValueDictionary(RouteValueDictionary values) |
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if ((values == null) || (values.Count == 0)) |
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string str = string.Empty; |
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foreach (string str2 in values.Keys) |
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str = str + string.Format("{0} = {1}, ", str2, values[str2]); |
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if (str.EndsWith(", ")) |
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str = str.Substring(0, str.Length - 2); |
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public void ProcessRequest(HttpContext context) |
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string str = string.Empty; |
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if (context.Request.QueryString.Count > 0) |
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RouteValueDictionary dictionary = new RouteValueDictionary(); |
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foreach (string str2 in context.Request.QueryString.Keys) |
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dictionary.Add(str2, context.Request.QueryString[str2]); |
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VirtualPathData virtualPath = RouteTable.Routes.GetVirtualPath(this.RequestContext, dictionary); |
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if (virtualPath != null) |
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str = "<p><label>Generated URL</label>: "; |
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str = str + "<strong style=\"color: #00a;\">" + virtualPath.VirtualPath + "</strong>"; |
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Route route = virtualPath.Route as Route; |
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str = str + " using the route \"" + route.Url + "\"</p>"; |
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string format = "<html>\r\n<head>\r\n <title>Route Tester</title>\r\n <style>\r\n body, td, th {{font-family: verdana; font-size: small;}}\r\n .message {{font-size: .9em;}}\r\n caption {{font-weight: bold;}}\r\n tr.header {{background-color: #ffc;}}\r\n label {{font-weight: bold; font-size: 1.1em;}}\r\n .false {{color: #c00;}}\r\n .true {{color: #0c0;}}\r\n </style>\r\n</head>\r\n<body>\r\n<h1>Route Tester</h1>\r\n<div id=\"main\">\r\n <p class=\"message\">\r\n Type in a url in the address bar to see which defined routes match it. \r\n A {{*catchall}} route is added to the list of routes automatically in \r\n case none of your routes match.\r\n </p>\r\n <p class=\"message\">\r\n To generate URLs using routing, supply route values via the query string. example: <code>http://localhost:14230/?id=123</code>\r\n </p>\r\n <p><label>Matched Route</label>: {1}</p>\r\n {5}\r\n <div style=\"float: left;\">\r\n <table border=\"1\" cellpadding=\"3\" cellspacing=\"0\" width=\"300\">\r\n <caption>Route Data</caption>\r\n <tr class=\"header\"><th>Key</th><th>Value</th></tr>\r\n {0}\r\n </table>\r\n </div>\r\n <div style=\"float: left; margin-left: 10px;\">\r\n <table border=\"1\" cellpadding=\"3\" cellspacing=\"0\" width=\"300\">\r\n <caption>Data Tokens</caption>\r\n <tr class=\"header\"><th>Key</th><th>Value</th></tr>\r\n {4}\r\n </table>\r\n </div>\r\n <hr style=\"clear: both;\" />\r\n <table border=\"1\" cellpadding=\"3\" cellspacing=\"0\">\r\n <caption>All Routes</caption>\r\n <tr class=\"header\">\r\n <th>Matches Current Request</th>\r\n <th>Url</th>\r\n <th>Defaults</th>\r\n <th>Constraints</th>\r\n <th>DataTokens</th>\r\n </tr>\r\n {2}\r\n </table>\r\n <hr />\r\n <h3>Current Request Info</h3>\r\n <p>\r\n AppRelativeCurrentExecutionFilePath is the portion of the request that Routing acts on.\r\n </p>\r\n <p><strong>AppRelativeCurrentExecutionFilePath</strong>: {3}</p>\r\n</div>\r\n</body>\r\n</html>"; |
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string str4 = string.Empty; |
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RouteData routeData = this.RequestContext.RouteData; |
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RouteValueDictionary values = routeData.Values; |
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RouteBase base2 = routeData.Route; |
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string str5 = string.Empty; |
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using (RouteTable.Routes.GetReadLock()) |
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foreach (RouteBase base3 in RouteTable.Routes) |
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bool flag = base3.GetRouteData(this.RequestContext.HttpContext) != null; |
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string str6 = string.Format("<span class=\"{0}\">{0}</span>", flag); |
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string str10 = "n/a"; |
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Route route2 = base3 as Route; |
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str8 = FormatRouteValueDictionary(route2.Defaults); |
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str9 = FormatRouteValueDictionary(route2.Constraints); |
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str10 = FormatRouteValueDictionary(route2.DataTokens); |
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str5 = str5 + string.Format("<tr><td>{0}</td><td>{1}</td><td>{2}</td><td>{3}</td><td>{4}</td></tr>", new object[] { str6, url, str8, str9, str10 }); |
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string str11 = "n/a"; |
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if (base2 is DebugRoute) |
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str11 = "<strong class=\"false\">NO MATCH!</strong>"; |
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foreach (string str2 in values.Keys) |
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str4 = str4 + string.Format("\t<tr><td>{0}</td><td>{1} </td></tr>", str2, values[str2]); |
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foreach (string str2 in routeData.DataTokens.Keys) |
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str12 = str12 + string.Format("\t<tr><td>{0}</td><td>{1} </td></tr>", str2, routeData.DataTokens[str2]); |
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Route route3 = base2 as Route; |
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context.Response.Write(string.Format(format, new object[] { str4, str11, str5, context.Request.AppRelativeCurrentExecutionFilePath, str12, str })); |
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public bool IsReusable |
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public RequestContext RequestContext |
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return this.<RequestContext>k__BackingField; |
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this.<RequestContext>k__BackingField = value; |
通过ProcessRequest方法来处理请求,最后呈现在路由检测的页面上。
首先从RequestContext.RouteData可以得到RouteData类，RouteData类包含所请求路由的相关值。从 RouteData.Values获取路由的URL参数值和默认值集合,在从RouteData.Route获取路由的对象,在获取有关集合中与指定值匹 配的路由信息.
Mikel
