/// 执行Put请求,获取返回的html
        public string PutForString()
        {
            var str = EasyHttpUtils.ReadAllAsString(ExecutForStream(Method.PUT), _responseEncoding);

            LogHtml(str);
            return(str);
        }
        /// 执行GET请求,获取返回的html
        public string GetForString()
        {
            var    stream = ExecutForStream(Method.GET);
            string str    = EasyHttpUtils.ReadAllAsString(stream, _responseEncoding);

            LogHtml(str);
            return(str);
        }
        /// 用指定的post内容执行post请求
        public string PostForString(string postData)
        {
            _customePostData = postData;
            var str = EasyHttpUtils.ReadAllAsString(ExecutForStream(Method.POST), _responseEncoding);

            LogHtml(str);
            return(str);
        }
        //用_request 提交异步请求
        private async void submitRequestAsyc(HttpWebRequest request)
        {
            if (_request == null)
            {
                return;
            }
            HttpStatusCode statusCode = HttpStatusCode.NotFound;

            try {
                _response = (await request.GetResponseAsync()) as HttpWebResponse;
                Stream responseStream = _response.GetResponseStream();
                if (_response.ContentEncoding.ToLower().Contains("gzip"))
                {
                    responseStream = new GZipStream(responseStream, CompressionMode.Decompress);
                }
                else if (_response.ContentEncoding.ToLower().Contains("deflate"))
                {
                    responseStream = new DeflateStream(responseStream, CompressionMode.Decompress);
                }

                var str = EasyHttpUtils.ReadAllAsString(responseStream, _responseEncoding);
                statusCode = _response.StatusCode;
                _cookieContainer.Add(_response.Cookies);
                _response.Close();
                LogHtml(str);
                if (OnDataReturn != null)
                {
                    OnDataReturn.Invoke(this, new DataReturn("0", EasyHttpUtils.UnicodeDencode(str)));    //TODO
                }
            }
            catch (WebException ex)
            {
                _response = ex.Response as HttpWebResponse;
                if (_response != null)
                {
                    var str = EasyHttpUtils.ReadAllAsString(_response.GetResponseStream(), _responseEncoding);
                    statusCode = (ex.Response as HttpWebResponse).StatusCode;
                    LogHtml(str);
                    if (OnDataReturn != null)
                    {
                        OnDataReturn.Invoke(this, new DataReturn("0", EasyHttpUtils.UnicodeDencode(str)));    //TODO
                    }
                }
            }

            if (_logLevel != EasyHttpLogLevel.None)
            {
                try
                {
                    LogRequet();
                    LogRespose();
                }
                catch (Exception e)
                {
                    Console.WriteLine("\nsubmitRequestAsyc error:" + e.Message);
                }
            }
        }
 /// 执行DELETE请求,获取返回的html
 public string DeleteForString()
 {
     return(EasyHttpUtils.ReadAllAsString(ExecutForStream(Method.DELETE), _responseEncoding));
 }