你好，
HttpWebResponse response = (HttpWebResponse)webRequest2.GetResponse();
Stream myResponseStream = response.GetResponseStream();
StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("UTF-8"));
string retString = myStreamReader.ReadToEnd();
myStreamReader.Close();
myResponseStream.Close();
//返回：服务器响应流
return retString;
试试这个。
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