private string GetDataFromServerApi(string url, string body)
        {
            string str = "";
            try
            {
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                request.Method = "POST";
                request.Timeout = 1500;
                if (!string.IsNullOrEmpty(body))
                {
                    byte[] data = Encoding.UTF8.GetBytes(body);
                    using (Stream stream = request.GetRequestStream())
                    {
                        stream.Write(data, 0, data.Length);
                    }
                    request.ContentLength = data.Length;
                }
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
                {
                    str = reader.ReadToEnd();
                }
            }
            catch (Exception ex)
            {
                _logger.Error("获取API异常 exception:" + ex);
            }
            return str;

        }