C# 百度TTS，文本轉語音，RestAPI之Get請求

因為用得到，所以作個記錄：

代碼如下：

public class BaiduTTSService : IBaiduTTSService
    {
        public string tok = GetBaiduToken();
        private const string lan = "zh";//語言
        private const string per = "4";//發音人選擇 0位女  1位男  默認 女0為女聲，1為男聲，3為情感合成-度逍遙，4為情感合成-度丫丫，默認為普通女聲
        private const string ctp = "1";//客戶端類型選擇 web端為1  
        private const string spd = "3";//范圍0~9  默認 5   語速
        private const string pit = "4";//范圍0~9  默認 5   音調
        private const string vol = "5";//范圍0~9  默認 5   音量
        private string cuid = Computer.GetMacAddress();//機器Mak地址
        private const string rest = "tex={0}&lan={1}&per={2}&ctp={3}&cuid={4}&tok={5}&spd={6}&pit={7}&vol={8}";

        /// <summary>
        /// tex 即：被轉化的文本  可以是中英文結合體，如：hello 陳卧龍
        /// </summary>
        /// <param name="tex"></param>
        /// <returns></returns>
        public string GetBaiduUri(string tex)
        {
            string Uri = "http://tsn.baidu.com/text2audio?" + string.Format(rest, tex, lan, per, ctp, cuid, tok, spd, pit, vol);
            return Uri;
        }

        /// <summary>
        /// 獲取百度Token  百度Token有效請為30天 
        /// </summary>
        /// <returns></returns>
        public static string GetBaiduToken()
        {
            //string Uri = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials&client_id=你的client_id&client_secret=你的client_secret";
            //string page = GetPage(Uri, "");
            //string Token = GetJsonValue(page, "access_token");
            return "24.926b57f9665a644fa7b38c76c021834d.2592000.1496304195.282335-9593280";
        }

        #region 獲取網絡資源
        /// <summary>
        /// 獲取網絡資源  
        /// </summary>
        /// <param name="posturl">請求的URL</param>
        /// <param name="postData">發送的數據</param>
        /// <returns>json格式的字符串</returns>
        public static string GetPage(string posturl, string postData)
        {
            //WX_SendNews news = new WX_SendNews(); 
            //posturl： news.Posturl;
            //postData：news.PostData;
            System.IO.Stream outstream = null;
            Stream instream = null;
            StreamReader sr = null;
            HttpWebResponse response = null;
            HttpWebRequest request = null;
            Encoding encoding = Encoding.UTF8;
            byte[] data = encoding.GetBytes(postData);
            // 准備請求...  
            try
            {
                // 設置參數  
                request = WebRequest.Create(posturl) as HttpWebRequest;
                CookieContainer cookieContainer = new CookieContainer();
                request.CookieContainer = cookieContainer;
                request.AllowAutoRedirect = true;
                request.Method = "POST";
                request.ContentType = "application/x-www-form-urlencoded";
                request.ContentLength = data.Length;
                outstream = request.GetRequestStream();
                outstream.Write(data, 0, data.Length);
                outstream.Close();
                //發送請求並獲取相應回應數據  
                response = request.GetResponse() as HttpWebResponse;
                //直到request.GetResponse()程序才開始向目標網頁發送Post請求  
                instream = response.GetResponseStream();
                sr = new StreamReader(instream, encoding);
                //返回結果網頁（html）代碼  
                string content = sr.ReadToEnd();
                string err = string.Empty;

                return content;
            }
            catch (Exception ex)
            {
                string err = ex.Message;
                return string.Empty;
            }
        }
        #endregion

        #region 獲取Json字符串某節點的值
        /// <summary>
        /// 獲取Json字符串某節點的值
        /// </summary>
        public static string GetJsonValue(string jsonStr, string key)
        {
            string result = string.Empty;
            if (!string.IsNullOrEmpty(jsonStr))
            {
                key = "\"" + key.Trim('"') + "\"";
                int index = jsonStr.IndexOf(key) + key.Length + 1;
                if (index > key.Length + 1)
                {
                    //先截逗號，若是最后一個，截“｝”號，取最小值
                    int end = jsonStr.IndexOf(',', index);
                    if (end == -1)
                    {
                        end = jsonStr.IndexOf('}', index);
                    }

                    result = jsonStr.Substring(index, end - index);
                    result = result.Trim(new char[] { '"', ' ', '\'' }); //過濾引號或空格
                }
            }
            return result;
        }
        #endregion

       
    }

詳情請參考百度TTS API：網址：http://yuyin.baidu.com/docs/tts/133