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标题: C#发送http请求,调用百度语音识别API [打印本页]

作者: qq530371069 时间: 2015-4-15 23:26
标题: C#发送http请求,调用百度语音识别API
      public string API_id = "你的ID";
      public string API_record = null;
      public string API_record_format = null;
      public string API_record_HZ = null;
      public string API_key = "你的KEY";
      public string API_secret_key = "你的SECRRET_KEY";
      public string API_language = null;
      public string API_access_token=null;
      public string strJSON = "";

public 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 = 30000;//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)
         {
            MessageBox.Show(ex.ToString());
         }

         JObject jo = JObject.Parse(access_html);
         access_token = jo["access_token"].ToString();//得到返回的toke
         return access_token;
      }

public 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)
      {
//方法参数说明:
para_API_id: API_id (你的ID)
para_API_access_token (getStrAccess(...)方法得到的access_token口令)
para_API_language (你要识别的语言,zh,en,ct)
para_API_record(语音文件的路径)
para_format(语音文件的格式)
para_Hz(语音文件的采样率 16000或者8000)

//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, 0, 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;
         serverreq.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)";
         getTextRequst.Timeout = 30000;//30秒连接不成功就中断
         using (Stream writeStream = getTextRequst.GetRequestStream())
         {
            writeStream.Write(voice, 0, 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"][0].ToString();
                  return strText;
            }
            else
            {
                  error = jsons["err_no"].Value<string>() + jsons["err_msg"].Value<string>();
                  return error;
            }

      }

作者: 站长苏飞 时间: 2015-4-16 12:04
我只是路过打酱油的。

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