以前使用RouteMonitor.dll進行MVC路由檢測URL路徑的映射匹配情況。由於公司電腦沒有此組件，所以上網搜了下，結果才發現RouteMonitor.dll已經將名稱改為了RouteDebug.dll 。具體參閱 官方網站。 ：http://files.cnblogs.com/Capricornus/RouteDebug-Binary.zip
使用方法:
1. 在MVC項目中添加引用此組件
2. 在全域應用程式類Global.asax.cs中設定代碼
protected void Application_Start() { RegisterRoutes(RouteTable.Routes); RouteDebug.RouteDebugger.RewriteRoutesForTesting(RouteTable.Routes); //以前RouteMonitor方式 //RouteMonitor.RouteDebugger.RewriteRoutesForTesting(RouteTable.Routes); }
3.匹配路由如:
我們可以使用Reflector反編譯這個RouteDebugger.dll組件，查看一下原理。
RouteDebug中包含了DebugHttpHandler、DebugRoute、DebugRouteHandler、RouteDebugger這4個類。
首先從我們調用RouteDebug.RouteDebugger.RewriteRoutesForTesting的著手。
RouteDebugger類：
public static class RouteDebugger{ // Methods public static void RewriteRoutesForTesting(RouteCollection routes) { using (routes.GetReadLock()) { bool flag = false; foreach (RouteBase base2 in routes) { Route route = base2 as Route; if (route != null) { route.RouteHandler = new DebugRouteHandler(); } if (route == DebugRoute.Singleton) { flag = true; } } if (!flag) { routes.Add(DebugRoute.Singleton); } } }}
首先，整個代碼是使用System.Web.Routing命名空間下的RouteCollection.GetReadLock()鎖定的，提供一個對象，用於管理在從集合中檢索對象時的執行緒安全性;然後遍曆我們傳過來的路由集合參數。用RouteDebug中的DebugRouteHandler去替換原有RouteHandler，以便改變Http處理常式的方向，接著將Singletion屬性的值添加到路由結合中。
DebugRoute類:
public class DebugRoute : Route{ private static DebugRoute singleton = new DebugRoute(); private DebugRoute() : base("{*catchall}", new DebugRouteHandler()) { } public static DebugRoute Singleton { get { return singleton; } }}
DebugRoute繼承與Route類,建構函式實現了構造可捕獲所有URL地址的Route。
DebugRouteHandler路由處理常式類:
public class DebugRouteHandler : IRouteHandler{ // Methods public IHttpHandler GetHttpHandler(RequestContext requestContext) { DebugHttpHandler handler = new DebugHttpHandler(); handler.RequestContext = requestContext; return handler; }}
實現IHttpHanlder介面的執行個體化對象,傳入了一個RequestContext對象執行個體。
DebugHttpHandler類：
public class DebugHttpHandler : IHttpHandler{ [CompilerGenerated] private RequestContext <RequestContext>k__BackingField; private static string FormatRouteValueDictionary(RouteValueDictionary values) { if ((values == null) || (values.Count == 0)) { return "(null)"; } string str = string.Empty; foreach (string str2 in values.Keys) { str = str + string.Format("{0} = {1}, ", str2, values[str2]); } if (str.EndsWith(", ")) { str = str.Substring(0, str.Length - 2); } return str; } public void ProcessRequest(HttpContext context) { string str = string.Empty; if (context.Request.QueryString.Count > 0) { RouteValueDictionary dictionary = new RouteValueDictionary(); foreach (string str2 in context.Request.QueryString.Keys) { dictionary.Add(str2, context.Request.QueryString[str2]); } VirtualPathData virtualPath = RouteTable.Routes.GetVirtualPath(this.RequestContext, dictionary); if (virtualPath != null) { str = "<p><label>Generated URL</label>: "; str = str + "<strong style=\"color: #00a;\">" + virtualPath.VirtualPath + "</strong>"; Route route = virtualPath.Route as Route; if (route != null) { str = str + " using the route \"" + route.Url + "\"</p>"; } } } 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>"; string str4 = string.Empty; //RouteData類包含所請求路由的相關值 RouteData routeData = this.RequestContext.RouteData; //獲得路由的URL參數值和預設值的集合 RouteValueDictionary values = routeData.Values; //擷取路由的對象 RouteBase base2 = routeData.Route; string str5 = string.Empty; using (RouteTable.Routes.GetReadLock()) { foreach (RouteBase base3 in RouteTable.Routes) { //返回有關集合中與指定值匹配的路由的資訊，如果為空白，說明不匹配 bool flag = base3.GetRouteData(this.RequestContext.HttpContext) != null; string str6 = string.Format("<span class=\"{0}\">{0}</span>", flag); string url = "n/a"; string str8 = "n/a"; string str9 = "n/a"; string str10 = "n/a"; Route route2 = base3 as Route; if (route2 != null) { //如果路由不為空白，得到匹配的Url路由 url = route2.Url; //得到預設的Url匹配規則資訊 str8 = FormatRouteValueDictionary(route2.Defaults); //得到約束的Url匹配規則資訊 str9 = FormatRouteValueDictionary(route2.Constraints); //得到命名空間的Url匹配規則資訊 str10 = FormatRouteValueDictionary(route2.DataTokens); } 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 }); } } string str11 = "n/a"; string str12 = ""; //如果只被{@cacheall}捕獲時，提示不匹配 if (base2 is DebugRoute) { str11 = "<strong class=\"false\">NO MATCH!</strong>"; } else { //匹配的路由資訊 foreach (string str2 in values.Keys) { str4 = str4 + string.Format("\t<tr><td>{0}</td><td>{1} </td></tr>", str2, values[str2]); } foreach (string str2 in routeData.DataTokens.Keys) { str12 = str12 + string.Format("\t<tr><td>{0}</td><td>{1} </td></tr>", str2, routeData.DataTokens[str2]); } Route route3 = base2 as Route; if (route3 != null) { str11 = route3.Url; } } context.Response.Write(string.Format(format, new object[] { str4, str11, str5, context.Request.AppRelativeCurrentExecutionFilePath, str12, str })); } public bool IsReusable { get { return true; } } public RequestContext RequestContext { [CompilerGenerated] get { return this.<RequestContext>k__BackingField; } [CompilerGenerated] set { this.<RequestContext>k__BackingField = value; } }}
通過ProcessRequest方法來處理請求,最後呈現在路由檢測的頁面上。
首先從RequestContext.RouteData可以得到RouteData類，RouteData類包含所請求路由的相關值。從RouteData.Values擷取路由的URL參數值和預設值集合,在從RouteData.Route擷取路由的對象,在擷取有關集合中與指定值匹配的路由資訊.
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