废话不多说直接上代码： 不清楚的加群：群 ：191065815

  private void Form1_Load(object sender, EventArgs e)
        {
            try
            {

                //更改设置浏览器语言
                CefSettings settings = new CefSettings();
                settings.Locale = "zh-CN";
                settings.AcceptLanguageList = "zh-CN";
                Cef.Initialize(settings);

                var re = new request();

                //接收和发送的http消息
                re.msg += Re_msg;
                re.msg2 += Re_msg2;    ... 这里是使用

     private void Re_msg(string obj)
        {   //可打印Obj 内容即可看到 }

 public class request : IRequestHandler
    {
        public event Action<string> msg;
        public event Action<string,object> msg2;
        public event Action<string> msgGetuser;
        public bool GetAuthCredentials(IWebBrowser browserControl, IBrowser browser, IFrame frame, bool isProxy,
            string host, int port, string realm, string scheme, IAuthCallback callback)
        {

            return false;
        }

        public IResponseFilter GetResourceResponseFilter(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response)
        {

            if (response.MimeType.ToLower().IndexOf("text") > -1 || response.MimeType.ToLower().IndexOf("json") > -1)
            {

                var filter = new AppendResponseFilter(request.Url, response.MimeType);

                filter.VOIDFUN += Filter_VOIDFUN;
                return filter;
                //var filter2 = FilterManager.CreateFilter(request.Identifier.ToString());

                //return filter2;

            }

            return null;

            //var filter1 = FilterManager.CreateFilter(request.Identifier.ToString());

            //return filter1;

        }
        private void Filter_VOIDFUN(string arg1, string arg2, string arg3, long arg4)
        {    
            msg2?.Invoke(arg1,arg2);
        }


        public bool OnBeforeBrowse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request,
            bool isRedirect)
        {

            var m = request.Method;
            msg?.Invoke(request.Url);
            msg?.Invoke(m);
            if (request.Method == "POST")
            {
                using (var postData = request.PostData)
                {
                    if (postData != null)
                    {
                        var elements = postData.Elements;

                        var charSet = request.GetCharSet();

                        foreach (var element in elements)
                        {
                            if (element.Type == PostDataElementType.Bytes)
                            {
                                var body = element.GetBody(charSet);
                                msg?.Invoke(body);
                            }
                        }
                    }
                }
            }

            return false;
        }

        public CefReturnValue OnBeforeResourceLoad(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IRequestCallback callback)
        {
            var m = request.Method;
            msg?.Invoke(request.Url);
            msg?.Invoke(m);
            if (request.Method == "POST")
            {
                using (var postData = request.PostData)
                {
                    if (postData != null)
                    {
                        var elements = postData.Elements;

                        var charSet = request.GetCharSet();

                        foreach (var element in elements)
                        {
                            if (element.Type == PostDataElementType.Bytes)
                            {
                                var body = element.GetBody(charSet);
                                msg?.Invoke(body);
                            }
                        }
                    }
                }
            }
           
            return CefReturnValue.Continue;
        }

        public bool OnCertificateError(IWebBrowser browserControl, IBrowser browser, CefErrorCode errorCode, string requestUrl, ISslInfo sslInfo, IRequestCallback callback)
        {
            return true;
        }

        public bool OnOpenUrlFromTab(IWebBrowser browserControl, IBrowser browser, IFrame frame, string targetUrl, WindowOpenDisposition targetDisposition, bool userGesture)
        {
            return false;
        }

        public void OnPluginCrashed(IWebBrowser browserControl, IBrowser browser, string pluginPath)
        {

        }

        public bool OnProtocolExecution(IWebBrowser browserControl, IBrowser browser, string url)
        {
            return false;
        }

        public bool OnQuotaRequest(IWebBrowser browserControl, IBrowser browser, string originUrl, long newSize, IRequestCallback callback)
        {
            return false;
        }

        public void OnRenderProcessTerminated(IWebBrowser browserControl, IBrowser browser, CefTerminationStatus status)
        {

        }

        public void OnRenderViewReady(IWebBrowser browserControl, IBrowser browser)
        {

        }

        public void OnResourceLoadComplete(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response, UrlRequestStatus status, long receivedContentLength)
        {
            //if (request.Url.Contains("https://wx2.qq.com/cgi-bin/mmwebwx-bin/webwxgetcontact?") || request.Url.Contains("https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxgetcontact?"))
            //{
            //    //if (!response.ResponseHeaders["Content-Type"].Contains("application/json"))
            //    //{
            //    //    return;
            //    //}
            //    var filter1 = FilterManager.GetFileter(request.Identifier.ToString()) as AppendResponseFilter;

            //    if (filter1 != null)
            //        Console.WriteLine(filter1.DataAll);
            //    byte[] bys = filter1.DataAll.ToArray();
            //    string s1 = System.Text.Encoding.UTF8.GetString(bys);

            //    msgGetuser.Invoke(s1);
            //}

        }

        public void OnResourceRedirect(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, ref string newUrl)
        {

        }

        public void OnResourceRedirect(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response, ref string newUrl)
        {

        }

        public bool OnResourceResponse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response)
        {
            return false; ;

        }

        public bool OnSelectClientCertificate(IWebBrowser browserControl, IBrowser browser, bool isProxy, string host, int port, X509Certificate2Collection certificates, ISelectClientCertificateCallback callback)
        {
            return true;
        }
    }