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Fiddler自定义规则保存图片和提示The system proxy was changed自动重连

news 2026/5/31 11:59:22

1、打开Fiddler ,找到规则(Rules)-> 自定义规则(Customize Rules) 打开规则代码。

	static function OnDone(oSession: Session) {if (oSession.uriContains("https://www.xxx.com/xxxx")==false){return;}//检查Content-Type if (oSession.ResponseHeaders["Content-Type"]!=null || oSession.ResponseHeaders["content-type"]!=null){//避免不规范标头var contentType=oSession.ResponseHeaders["Content-Type"];if (String.IsNullOrEmpty(contentType) )contentType=oSession.ResponseHeaders["content-type"];//判定请求是否图片if (contentType.Contains("image")){//确定文件名（保存用）var fileName="";var fileIndex =    oSession.RequestHeaders.RequestPath.LastIndexOf ("/");if (fileIndex>0)fileName =    oSession.RequestHeaders.RequestPath.Substring (fileIndex+1);//如果文件名非法（名称含非法字符）if(fileName.IndexOf('?')>0 || fileName.IndexOf('&') )fileName=String.Empty;//输出日志（在Fiddler 主窗口，日志处输出）//FiddlerObject.log("Content-Type:"+ contentType +" RequestPath:"+oSession.RequestHeaders.RequestPath);//如果文件名为Null,自行创建一个文件名（Guid）if (String.IsNullOrEmpty( fileName)){fileName=Guid.NewGuid().ToString();var extName=    contentType.Replace("image/","");fileName=fileName+"."+extName;}//太小的图片不要，比如站位图片（自行调节）if (oSession.ResponseBody.Length>100){//指定保存位置var saveDir="D:\\fiddlerimage\\";//不存在则创建文件夹if (!System.IO.Directory.Exists(saveDir))System.IO.Directory.CreateDirectory(saveDir);//保存响应流oSession.SaveResponseBody(saveDir+fileName);//写日志FiddlerObject.log("[文件保存]:"+fileName)}}}}

Fiddler一直提示The system proxy was changed，click to reenable fiddler capture

解决办法：进入到Fiddler-->Rules-->Customize Rules

1.在main()方法上方添加:

static function DoReattach(o: Object, ea: EventArgs)
{
ScheduledTasks.ScheduleWork("reattach", 1000, innerReattach);
}

static function innerReattach()
{
FiddlerApplication.UI.actAttachProxy();
}

static function OnRetire()
{
FiddlerApplication.oProxy.remove_DetachedUnexpectedly(DoReattach);
}

2.在main()方法中添加:

FiddlerApplication.oProxy.add_DetachedUnexpectedly(DoReattach);