public static string getStrAccess(string para_API_key, string para_API_secret_key)

        {

            //方法参数说明:

            //para_API_key:API_key(你的KEY)

            //para_API_secret_key(你的SECRRET_KEY)

            //方法返回值说明:

            //百度认证口令码,access_token

            string access_html = null;

            string access_token = null;

            string getAccessUrl = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials" +

           "&client_id=" + para_API_key + "&client_secret=" + para_API_secret_key;

            try

            {

                HttpWebRequest getAccessRequest = WebRequest.Create(getAccessUrl) as HttpWebRequest;

                //getAccessRequest.Proxy = null;

                getAccessRequest.ContentType = "multipart/form-data";

                getAccessRequest.Accept = "*/*";

                getAccessRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)";

                getAccessRequest.Timeout = ;//30秒连接不成功就中断

                getAccessRequest.Method = "post";

                HttpWebResponse response = getAccessRequest.GetResponse() as HttpWebResponse;

                using (StreamReader strHttpComback = new StreamReader(response.GetResponseStream(), Encoding.UTF8))

                {

                    access_html = strHttpComback.ReadToEnd();

                }

            }

            catch (WebException ex)

            {

                Console.Write(ex.Message);

                Console.ReadLine();

            }

            JObject jo = JObject.Parse(access_html);

            access_token = jo["access_token"].ToString();//得到返回的toke

            return access_token;

        }

        public static string getStrText(string para_API_id, string para_API_access_token, string para_API_language, string para_API_record, string para_format, string para_Hz)

        {

            string strJSON = "";

            //方法参数说明:

            //该方法返回值:

            //该方法执行正确返回值是语音翻译的文本,错误是错误号,可以去看百度语音文档,查看对应错误

            string strText = null;

            string error = null;

            FileInfo fi = new FileInfo(para_API_record);

            FileStream fs = new FileStream(para_API_record, FileMode.Open);

            byte[] voice = new byte[fs.Length];

            fs.Read(voice, , voice.Length);

            fs.Close();

            string getTextUrl = "http://vop.baidu.com/server_api?lan=" + para_API_language + "&cuid=" + para_API_id + "&token=" + para_API_access_token;

            HttpWebRequest getTextRequst = WebRequest.Create(getTextUrl) as HttpWebRequest;

            /* getTextRequst.Proxy = null;

             getTextRequst.ServicePoint.Expect100Continue = false;

             getTextRequst.ServicePoint.UseNagleAlgorithm = false;

             getTextRequst.ServicePoint.ConnectionLimit = 65500;

             getTextRequst.AllowWriteStreamBuffering = false;*/

            getTextRequst.ContentType = "audio /" + para_format + ";rate=" + para_Hz;

            getTextRequst.ContentLength = fi.Length;

            getTextRequst.Method = "post";

            getTextRequst.Accept = "*/*";

            getTextRequst.KeepAlive = true;

            getTextRequst.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)";

            getTextRequst.Timeout = ;//30秒连接不成功就中断

            using (Stream writeStream = getTextRequst.GetRequestStream())

            {

                writeStream.Write(voice, , voice.Length);

            }

            HttpWebResponse getTextResponse = getTextRequst.GetResponse() as HttpWebResponse;

            using (StreamReader strHttpText = new StreamReader(getTextResponse.GetResponseStream(), Encoding.UTF8))

            {

                strJSON = strHttpText.ReadToEnd();

            }

            JObject jsons = JObject.Parse(strJSON);//解析JSON

            if (jsons["err_msg"].Value<string>() == "success.")

            {

                strText = jsons["result"][].ToString();

                return strText;

            }

            else

            {

                error = jsons["err_no"].Value<string>() + jsons["err_msg"].Value<string>();

                return error;

            }

        }

  //百度公众号的两个唯一值

  string access = getStrAccess(para_API_key, para_API_secret_key);

            Console.Write(access);

            Console.ReadLine();

            string text = getStrText(GetMacByNetworkInterface()[0], access, "zh", "1.wav", "wav", "");

///<summary>
/// 通过NetworkInterface读取网卡Mac
///</summary>
///<returns></returns>
public static List<string> GetMacByNetworkInterface()
{
List<string> macs = new List<string>();
NetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface ni in interfaces)
{
macs.Add(ni.GetPhysicalAddress().ToString());
}
return macs;
}