适用场景：
- 你是前端开发人员，要开发一个小模块，需要用到线上的环境（账号、数据、跨域等），但你又没有权限往线上传文件
- 你是移动测试人员，需要将一组接口的返回结果替换为另一组，最简单的办法就是使用Fiddler修改接口返回结果
实现脚本代码：
import System; import System.Windows.Forms; import Fiddler; import System.IO; // INTRODUCTION // This is the FiddlerScript Rules file, which creates some of the menu commands and // other features of Fiddler. You can edit this file to modify or add new commands. // // The original version of this file is named SampleRules.js and it is in the // Program FilesFiddler folder. When Fiddler first starts, it creates a copy named // CustomRules.js inside your DocumentsFiddler2Scripts folder. If you make a // mistake in editing this file, simply delete the CustomRules.js file and restart // Fiddler. A fresh copy of the default rules will be created from the original // sample rules file. // GLOBALIZATION NOTE: // Be sure to save this file with UTF-8 Encoding if using any non-ASCII characters // in strings, etc. // JScript.NET Reference // http://fiddler2.com/r/?msdnjsnet // // FiddlerScript Reference // http://fiddler2.com/r/?fiddlerscriptcookbook // // FiddlerScript Editor: // http://fiddler2.com/fiddlerscript-editor /** * Fiddler 自定义脚本 * * @author frank * @email frank@mondol.info * @created 2016-08-22 */ class Handlers { /******************** 配置开始 ********************/ /* 客户端IP白名单 */ static var sClientIpWhitelist = ["127.0.0.1","192.168.11.29","192.168.11.89"]; /* * 请求URL黑名单 * 此名单采用模糊匹配，只要请求URL包含此名单中的字符串就满足条件 */ static var sUrlBacklist = ["/generate_204"]; /******************** 配置结束 ********************/ /******************** 回调开始 ********************/ /** * 开始请求前的回调 * * @return {boolean} true: 终止后面的操作 | false: 不终止 */ static function OnBeforeRequestCallback(oSession: Session) { //劫持指定路径下的所有请求 var hUrl = "www.shouxiner.com/MyHome/"; if(oSession.HTTPMethodIs("GET") && oSession.uriContains(hUrl)){ var filePath = MapUrlToFilePath(oSession.url, hUrl, "D:\MyWeb"); if(File.Exists(filePath)) { oSession.LoadResponseFromFile(filePath); return true; } } } /** * PEEK响应头的回调 * * @return {boolean} true: 终止后面的操作 | false: 不终止 */ static function OnPeekAtResponseHeadersCallback(oSession: Session) { } /** * 返回响应头前的回调 * * @return {boolean} true: 终止后面的操作 | false: 不终止 */ static function OnBeforeResponseCallback(oSession: Session) { } /******************** 回调结束 ********************/ /******************** 列配置开始 ********************/ // The following snippet demonstrates a custom-bound column for the Web Sessions list. // See http://fiddler2.com/r/?fiddlercolumns for more info public static BindUIColumn("Method", 60) function FillMethodColumn(oS: Session): String { return oS.RequestMethod; } public static BindUIColumn("ClientIP", 120) function FillClientIPColumn(oS: Session): String { return oS.clientIP; } /******************** 列配置结束 ********************/ // The following snippet demonstrates how to create a custom tab that shows simple text /* public BindUITab("Flags") static function FlagsReport(arrSess: Session[]):String { var oSB: System.Text.StringBuilder = new System.Text.StringBuilder(); for (var i:int = 0; i<arrSess.Length; i++) { oSB.AppendLine("SESSION FLAGS"); oSB.AppendFormat("{0}: {1} ", arrSess[i].id, arrSess[i].fullUrl); for(var sFlag in arrSess[i].oFlags) { oSB.AppendFormat(" {0}: {1} ", sFlag.Key, sFlag.Value); } } return oSB.ToString(); } */ public static RulesOption("Hide 304s") BindPref("fiddlerscript.rules.Hide304s") var m_Hide304s: boolean = false; // Cause Fiddler to override the Accept-Language header with one of the defined values public static RulesOption("Request &Japanese Content") var m_Japanese: boolean = false; // Automatic Authentication public static RulesOption("&Automatically Authenticate") BindPref("fiddlerscript.rules.AutoAuth") var m_AutoAuth: boolean = false; // Cause Fiddler to override the User-Agent header with one of the defined values RulesString("&User-Agents", true) BindPref("fiddlerscript.ephemeral.UserAgentString") RulesStringValue(0,"Netscape &3", "Mozilla/3.0 (Win95; I)") RulesStringValue(1,"WinPhone7", "Mozilla/4.0 (compatible: MSIE 7.0; Windows Phone OS 7.0; Trident/3.1; IEMobile/7.0; SAMSUNG; SGH-i917)") RulesStringValue(2,"WinPhone8.1", "Mozilla/5.0 (Mobile; Windows Phone 8.1; Android 4.0; ARM; Trident/7.0; Touch; rv:11.0; IEMobile/11.0; NOKIA; Lumia 520) like iPhone OS 7_0_3 Mac OS X AppleWebKit/537 (KHTML, like Gecko) Mobile Safari/537") RulesStringValue(3,"&Safari5 (Win7)", "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.21.1 (KHTML, like Gecko) Version/5.0.5 Safari/533.21.1") RulesStringValue(4,"Safari7 (Mac)", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9) AppleWebKit/537.71 (KHTML, like Gecko) Version/7.0 Safari/537.71") RulesStringValue(5,"iPad", "Mozilla/5.0 (iPad; CPU OS 8_1_2 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12B440 Safari/600.1.4") RulesStringValue(6,"iPhone6", "Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A405 Safari/8536.25") RulesStringValue(7,"IE &6 (XPSP2)", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)") RulesStringValue(8,"IE &7 (Vista)", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1)") RulesStringValue(9,"IE 8 (Win2k3 x64)", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; WOW64; Trident/4.0)") RulesStringValue(10,"IE &8 (Win7)", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)") RulesStringValue(11,"IE 9 (Win7)", "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)") RulesStringValue(12,"IE 10 (Win8)", "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)") RulesStringValue(13,"IE 11 (Surface2)", "Mozilla/5.0 (Windows NT 6.3; ARM; Trident/7.0; Touch; rv:11.0) like Gecko") RulesStringValue(14,"IE 11 (Win8.1)", "Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko") RulesStringValue(15,"IE 12 (Win10)", "Mozilla/5.0 (Windows NT 6.4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.143 Safari/537.36 Edge/12.0") RulesStringValue(16,"&Opera", "Opera/9.80 (Windows NT 6.2; WOW64) Presto/2.12.388 Version/12.17") RulesStringValue(17,"&Firefox 3.6", "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.7) Gecko/20100625 Firefox/3.6.7") RulesStringValue(18,"&Firefox 36", "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0") RulesStringValue(19,"&Firefox Phone", "Mozilla/5.0 (Mobile; rv:18.0) Gecko/18.0 Firefox/18.0") RulesStringValue(20,"&Firefox (Mac)", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Firefox/24.0") RulesStringValue(21,"Chrome", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.39 Safari/537.36") RulesStringValue(22,"ChromeBook", "Mozilla/5.0 (X11; CrOS x86_64 6680.52.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.74 Safari/537.36") RulesStringValue(23,"GoogleBot Crawler", "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)") RulesStringValue(24,"Kindle Fire (Silk)", "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_3; en-us; Silk/1.0.22.79_10013310) AppleWebKit/533.16 (KHTML, like Gecko) Version/5.0 Safari/533.16 Silk-Accelerated=true") RulesStringValue(25,"&Custom...", "%CUSTOM%") public static var sUA: String = null; // Cause Fiddler to delay HTTP traffic to simulate typical 56k modem conditions public static RulesOption("Simulate &Modem Speeds", "Per&formance") var m_SimulateModem: boolean = false; // Removes HTTP-caching related headers and specifies "no-cache" on requests and responses public static RulesOption("&Disable Caching", "Per&formance") var m_DisableCaching: boolean = false; public static RulesOption("Cache Always &Fresh", "Per&formance") var m_AlwaysFresh: boolean = false; // Force a manual reload of the script file. Resets all // RulesOption variables to their defaults. public static ToolsAction("Reset Script") function DoManualReload() { FiddlerObject.ReloadScript(); } public static ContextAction("Decode Selected Sessions") function DoRemoveEncoding(oSessions: Session[]) { for (var x:int = 0; x < oSessions.Length; x++){ oSessions[x].utilDecodeRequest(); oSessions[x].utilDecodeResponse(); } UI.actUpdateInspector(true,true); } static function OnBoot() { // MessageBox.Show("Fiddler has finished booting"); // System.Diagnostics.Process.Start("iexplore.exe"); // UI.ActivateRequestInspector("HEADERS"); // UI.ActivateResponseInspector("HEADERS"); } static function OnShutdown() { // MessageBox.Show("Fiddler has shutdown"); } static function OnAttach() { // MessageBox.Show("Fiddler is now the system proxy"); } static function OnDetach() { // MessageBox.Show("Fiddler is no longer the system proxy"); } static function OnBeforeRequest(oSession: Session) { if(OnBeforeRequestCallback(oSession)) return; /** 关闭缓存 **/ if (m_DisableCache && m_EnableCustomRule) { oSession.oRequest.headers.Remove("If-None-Match"); oSession.oRequest.headers.Remove("If-Modified-Since"); oSession.oRequest["Pragma"] = "no-cache"; } /** 隐藏URL黑名单中的请求 **/ if(m_HideByUrlBacklist && m_EnableCustomRule){ for(var x in sUrlBacklist){ if(oSession.uriContains(sUrlBacklist[x])){ oSession.Ignore(); break; } } } /** 阻止白名单之外的客户端使用代理 **/ if(m_DenyWithoutIpWhitelist && m_EnableCustomRule){ var bOk = false; for(var x in sClientIpWhitelist){ if(oSession.clientIP.EndsWith(sClientIpWhitelist[x])){ bOk = true; break; } } if(!bOk){ SetResponse(oSession, 200, "请不要蹭网哦~~！<br/>请检查并关闭你的WiFi代理...<br/><br/> By Frank",null); oSession.Ignore(); } } /** 隐藏所有来源请求 **/ if(m_HideAllRequest){ oSession.Ignore(); } // Sample Rule: Color ASPX requests in RED // if (oSession.uriContains(".aspx")) { oSession["ui-color"] = "red"; } // Sample Rule: Flag POSTs to fiddler2.com in italics // if (oSession.HostnameIs("www.fiddler2.com") && oSession.HTTPMethodIs("POST")) { oSession["ui-italic"] = "yup"; } // Sample Rule: Break requests for URLs containing "/sandbox/" // if (oSession.uriContains("/sandbox/")) { // oSession.oFlags["x-breakrequest"] = "yup"; // Existence of the x-breakrequest flag creates a breakpoint; the "yup" value is unimportant. // } if ((null != gs_ReplaceToken) && (oSession.url.indexOf(gs_ReplaceToken)>-1)) { // Case sensitive oSession.url = oSession.url.Replace(gs_ReplaceToken, gs_ReplaceTokenWith); } if ((null != gs_OverridenHost) && (oSession.host.toLowerCase() == gs_OverridenHost)) { oSession["x-overridehost"] = gs_OverrideHostWith; } if ((null!=bpRequestURI) && oSession.uriContains(bpRequestURI)) { oSession["x-breakrequest"]="uri"; } if ((null!=bpMethod) && (oSession.HTTPMethodIs(bpMethod))) { oSession["x-breakrequest"]="method"; } if ((null!=uiBoldURI) && oSession.uriContains(uiBoldURI)) { oSession["ui-bold"]="QuickExec"; } if (m_SimulateModem) { // Delay sends by 300ms per KB uploaded. oSession["request-trickle-delay"] = "300"; // Delay receives by 150ms per KB downloaded. oSession["response-trickle-delay"] = "150"; } // User-Agent Overrides if (null != sUA) { oSession.oRequest["User-Agent"] = sUA; } if (m_Japanese) { oSession.oRequest["Accept-Language"] = "ja"; } if (m_AutoAuth) { // Automatically respond to any authentication challenges using the // current Fiddler user's credentials. You can change (default) // to a domain\username:password string if preferred. // // WARNING: This setting poses a security risk if remote // connections are permitted! oSession["X-AutoAuth"] = "(default)"; } if (m_AlwaysFresh && (oSession.oRequest.headers.Exists("If-Modified-Since") || oSession.oRequest.headers.Exists("If-None-Match"))) { oSession.utilCreateResponseAndBypassServer(); oSession.responseCode = 304; oSession["ui-backcolor"] = "Lavender"; } } // This function is called immediately after a set of request headers has // been read from the client. This is typically too early to do much useful // work, since the body hasn't yet been read, but sometimes it may be useful. // // For instance, see // http://blogs.msdn.com/b/fiddler/archive/2011/11/05/http-expect-continue-delays-transmitting-post-bodies-by-up-to-350-milliseconds.aspx // for one useful thing you can do with this handler. // // Note: oSession.requestBodyBytes is not available within this function! // static function OnPeekAtRequestHeaders(oSession: Session) { // } // // If a given session has response streaming enabled, then the OnBeforeResponse function // is actually called AFTER the response was returned to the client. // // In contrast, this OnPeekAtResponseHeaders function is called before the response headers are // sent to the client (and before the body is read from the server). Hence this is an opportune time // to disable streaming (oSession.bBufferResponse = true) if there is something in the response headers // which suggests that tampering with the response body is necessary. // // Note: oSession.responseBodyBytes is not available within this function! // static function OnPeekAtResponseHeaders(oSession: Session) { if(OnPeekAtResponseHeadersCallback(oSession)) return; /** 隐藏指定类型的文件 **/ if(m_HideOtherRequest && m_EnableCustomRule && oSession.oResponse != null){ var headers = oSession.oResponse.headers; if(headers.ExistsAndContains("Content-Type", "text/css")) oSession.Ignore(); else if(headers.ExistsAndContains("Content-Type", "image")) oSession.Ignore(); else if(headers.ExistsAndContains("Content-Type", "script")) oSession.Ignore(); else if(headers.ExistsAndContains("Content-Type", "x-shockwave-flash")) oSession.Ignore(); } //FiddlerApplication.Log.LogFormat("Session {0}: Response header peek shows status is {1}", oSession.id, oSession.responseCode); if (m_DisableCaching) { oSession.oResponse.headers.Remove("Expires"); oSession.oResponse["Cache-Control"] = "no-cache"; } if ((bpStatus>0) && (oSession.responseCode == bpStatus)) { oSession["x-breakresponse"]="status"; oSession.bBufferResponse = true; } if ((null!=bpResponseURI) && oSession.uriContains(bpResponseURI)) { oSession["x-breakresponse"]="uri"; oSession.bBufferResponse = true; } } static function OnBeforeResponse(oSession: Session) { if(OnBeforeResponseCallback(oSession)) return; if (m_Hide304s && oSession.responseCode == 304) { oSession["ui-hide"] = "true"; } } /* // This function executes just before Fiddler returns an error that it has // itself generated (e.g. "DNS Lookup failure") to the client application. // These responses will not run through the OnBeforeResponse function above. static function OnReturningError(oSession: Session) { } */ /* // This function executes after Fiddler finishes processing a Session, regardless // of whether it succeeded or failed. Note that this typically runs AFTER the last // update of the Web Sessions UI listitem, so you must manually refresh the Session's // UI if you intend to change it. static function OnDone(oSession: Session) { } */ // The Main() function runs everytime your FiddlerScript compiles static function Main() { var today: Date = new Date(); FiddlerObject.StatusText = " CustomRules.js was loaded at: " + today; // Uncomment to add a "Server" column containing the response "Server" header, if present // UI.lvSessions.AddBoundColumn("Server", 50, "@response.server"); // Uncomment to add a global hotkey (Win+G) that invokes the ExecAction method below... // UI.RegisterCustomHotkey(HotkeyModifiers.Windows, Keys.G, "screenshot"); } // These static variables are used for simple breakpointing & other QuickExec rules BindPref("fiddlerscript.ephemeral.bpRequestURI") public static var bpRequestURI:String = null; BindPref("fiddlerscript.ephemeral.bpResponseURI") public static var bpResponseURI:String = null; BindPref("fiddlerscript.ephemeral.bpMethod") public static var bpMethod: String = null; static var bpStatus:int = -1; static var uiBoldURI: String = null; static var gs_ReplaceToken: String = null; static var gs_ReplaceTokenWith: String = null; static var gs_OverridenHost: String = null; static var gs_OverrideHostWith: String = null; // The OnExecAction function is called by either the QuickExec box in the Fiddler window, // or by the ExecAction.exe command line utility. static function OnExecAction(sParams: String[]): Boolean { FiddlerObject.StatusText = "ExecAction: " + sParams[0]; var sAction = sParams[0].toLowerCase(); switch (sAction) { case "bold": if (sParams.Length<2) {uiBoldURI=null; FiddlerObject.StatusText="Bolding cleared"; return false;} uiBoldURI = sParams[1]; FiddlerObject.StatusText="Bolding requests for " + uiBoldURI; return true; case "bp": FiddlerObject.alert("bpu = breakpoint request for uri bpm = breakpoint request method bps=breakpoint response status bpafter = breakpoint response for URI"); return true; case "bps": if (sParams.Length<2) {bpStatus=-1; FiddlerObject.StatusText="Response Status breakpoint cleared"; return false;} bpStatus = parseInt(sParams[1]); FiddlerObject.StatusText="Response status breakpoint for " + sParams[1]; return true; case "bpv": case "bpm": if (sParams.Length<2) {bpMethod=null; FiddlerObject.StatusText="Request Method breakpoint cleared"; return false;} bpMethod = sParams[1].toUpperCase(); FiddlerObject.StatusText="Request Method breakpoint for " + bpMethod; return true; case "bpu": if (sParams.Length<2) {bpRequestURI=null; FiddlerObject.StatusText="RequestURI breakpoint cleared"; return false;} bpRequestURI = sParams[1]; FiddlerObject.StatusText="RequestURI breakpoint for "+sParams[1]; return true; case "bpa": case "bpafter": if (sParams.Length<2) {bpResponseURI=null; FiddlerObject.StatusText="ResponseURI breakpoint cleared"; return false;} bpResponseURI = sParams[1]; FiddlerObject.StatusText="ResponseURI breakpoint for "+sParams[1]; return true; case "overridehost": if (sParams.Length<3) {gs_OverridenHost=null; FiddlerObject.StatusText="Host Override cleared"; return false;} gs_OverridenHost = sParams[1].toLowerCase(); gs_OverrideHostWith = sParams[2]; FiddlerObject.StatusText="Connecting to [" + gs_OverrideHostWith + "] for requests to [" + gs_OverridenHost + "]"; return true; case "urlreplace": if (sParams.Length<3) {gs_ReplaceToken=null; FiddlerObject.StatusText="URL Replacement cleared"; return false;} gs_ReplaceToken = sParams[1]; gs_ReplaceTokenWith = sParams[2].Replace(" ", "%20"); // Simple helper FiddlerObject.StatusText="Replacing [" + gs_ReplaceToken + "] in URIs with [" + gs_ReplaceTokenWith + "]"; return true; case "allbut": case "keeponly": if (sParams.Length<2) { FiddlerObject.StatusText="Please specify Content-Type to retain during wipe."; return false;} UI.actSelectSessionsWithResponseHeaderValue("Content-Type", sParams[1]); UI.actRemoveUnselectedSessions(); UI.lvSessions.SelectedItems.Clear(); FiddlerObject.StatusText="Removed all but Content-Type: " + sParams[1]; return true; case "stop": UI.actDetachProxy(); return true; case "start": UI.actAttachProxy(); return true; case "cls": case "clear": UI.actRemoveAllSessions(); return true; case "g": case "go": UI.actResumeAllSessions(); return true; case "goto": if (sParams.Length != 2) return false; Utilities.LaunchHyperlink("http://www.google.com/search?hl=en&btnI=I%27m+Feeling+Lucky&q=" + Utilities.UrlEncode(sParams[1])); return true; case "help": Utilities.LaunchHyperlink("http://fiddler2.com/r/?quickexec"); return true; case "hide": UI.actMinimizeToTray(); return true; case "log": FiddlerApplication.Log.LogString((sParams.Length<2) ? "User couldn't think of anything to say..." : sParams[1]); return true; case "nuke": UI.actClearWinINETCache(); UI.actClearWinINETCookies(); return true; case "screenshot": UI.actCaptureScreenshot(false); return true; case "show": UI.actRestoreWindow(); return true; case "tail": if (sParams.Length<2) { FiddlerObject.StatusText="Please specify # of sessions to trim the session list to."; return false;} UI.TrimSessionList(int.Parse(sParams[1])); return true; case "quit": UI.actExit(); return true; case "dump": UI.actSelectAll(); UI.actSaveSessionsToZip(CONFIG.GetPath("Captures") + "dump.saz"); UI.actRemoveAllSessions(); FiddlerObject.StatusText = "Dumped all sessions to " + CONFIG.GetPath("Captures") + "dump.saz"; return true; default: if (sAction.StartsWith("http") || sAction.StartsWith("www.")) { System.Diagnostics.Process.Start(sParams[0]); return true; } else { FiddlerObject.StatusText = "Requested ExecAction: '" + sAction + "' not found. Type HELP to learn more."; return false; } } } static function SetResponse(oSession: Session, statusCode: Int32, body: String, contentType: String) { oSession.utilCreateResponseAndBypassServer(); oSession.oResponse.headers.SetStatus(statusCode, "By Fiddler"); if(contentType==null) contentType="text/html"; contentType=contentType+"; charset=utf-8"; oSession.oResponse["Content-Type"] = contentType; oSession.oResponse["Date"] = DateTime.Now.ToUniversalTime().ToString("r"); oSession.utilSetResponseBody(body); } public static RulesOption("启用自定义规则", "自定义规则") var m_EnableCustomRule: boolean = true; /** 隐藏不相关请求（如css、image等） **/ public static RulesOption("隐藏CSS/image等请求", "自定义规则") var m_HideOtherRequest: boolean = false; public static RulesOption("强制关闭缓存", "自定义规则") var m_DisableCache: boolean = false; public static RulesOption("隐藏URL黑名单的请求", "自定义规则") var m_HideByUrlBacklist: boolean = true; public static RulesOption("仅接受IP白名单的请求", "自定义规则") var m_DenyWithoutIpWhitelist: boolean = false; public static RulesOption("隐藏所有来源请求") var m_HideAllRequest: boolean = false; static function MapUrlToFilePath(url: String, rootUrl: String, rootDir: String) { var idx = url.indexOf(rootUrl); if(idx < 0) throw new Error("参数错误：" + rootUrl); var idxArgs = url.indexOf("?"); var relatPath = url.substring(idx + rootUrl.length, idxArgs > 0 ? idxArgs: undefined); relatPath = relatPath.replace("/", "\"); var pSp = relatPath[0] == "\" ? "" : "\"; return rootDir + pSp + relatPath; } }
说明：
将OnBeforeRequestCallback方法中的hUrl替换为要劫持的URL路径（可以是部分），将D:\MyWeb替换为本地文件夹路径。
以代码中路径为例：将来访问http://www.shouxiner.com/MyHome/index.html时，就会转向访问D:MyWebindex.html文件里的内容
使用方法：
下载FiddlerScript插件并安装，将以上代码粘贴入FiddlerScript保存即可