手动修改fiddle的请求和响应
Rules->Custon Rules，或按Ctrl+R键，编辑 CustomRules.js 代码文件，在OnBeforeRequest函数里修改代码：
添加请求 header（头）
oSession.oRequest["NewHeaderName"] = "New header（头） value";
删除响应 header（头）
oSession.oResponse.headers.Remove("Set-Cookie");
改变请求参数
if (oSession.PathAndQuery=="/version1.css") { oSession.PathAndQuery="/version2.css"; }
替换请求url指向
if (oSession.HostnameIs("www.baidu.com")) { oSession.hostname="www.google.com"; }
替换请求url指向和端口
if (oSession.host=="www.baidu.com:8080") { oSession.host="test.baidu.com:9090"; }
替换请求url指向包含HTTPS tunnels
if (oSession.HTTPMethodIs("CONNECT") && (oSession.PathAndQuery == "www.example.com:443")) {
oSession.PathAndQuery = "beta.example.com:443";
}
if (oSession.HostnameIs("www.example.com")) oSession.hostname = "beta.example.com";
替换网页和静态文件
if (oSession.url=="www.example.com/live.js") { oSession.url = "dev.example.com/workinprogress.js"; }
阻止上载HTTP Cookie
oSession.oRequest.headers.Remove("Cookie");
解压缩并取消解压HTTP响应
// Remove any compression or chunking from the response in order to make it easier to manipulate oSession.utilDecodeResponse();
在HTML中搜索和替换
if (oSession.HostnameIs("www.baidu.com") && oSession.oResponse.headers.ExistsAndContains("Content-Type","text/html")){ oSession.utilDecodeResponse(); oSession.utilReplaceInResponse('<b>','<u>'); }
响应HTML的不区分大小写搜索.
if (oSession.oResponse.headers.ExistsAndContains("Content-Type", "text/html") && oSession.utilFindInResponse("searchfor", false)>-1){ oSession["ui-color"] = "red"; }
删除所有DIV标记（以及DIV标记内的内容）
// If content-type is HTML, then remove all DIV tags if (oSession.oResponse.headers.ExistsAndContains("Content-Type", "html")){ // Remove any compression or chunking oSession.utilDecodeResponse(); var oBody = System.Text.Encoding.UTF8.GetString(oSession.responseBodyBytes); // Replace all instances of the DIV tag with an empty string var oRegEx = /<div[^>]*>(.*?)</div>/gi; oBody = oBody.replace(oRegEx, ""); // Set the response body to the div-less string oSession.utilSetResponseBody(oBody); }
模拟HTTP基本身份验证（要求用户在显示web内容之前输入密码。）
if ((oSession.HostnameIs("www.example.com")) && !oSession.oRequest.headers.Exists("Authorization")) { // Prevent IE's "Friendly Errors Messages" from hiding the error message by making response body longer than 512 chars. var oBody = "<html><body>[Fiddler] Authentication Required.<BR>".PadRight(512, ' ') + "</body></html>"; oSession.utilSetResponseBody(oBody); // Build up the headers oSession.oResponse.headers.HTTPResponseCode = 401; oSession.oResponse.headers.HTTPResponseStatus = "401 Auth Required"; oSession.oResponse["WWW-Authenticate"] = "Basic realm="Fiddler (just hit Ok)""; oResponse.headers.add("Content-Type", "text/html"); }