C#基於百度AI實現機器翻譯功能

/// <summary>
        /// post請求方式
        /// </summary>
        /// <param name="url">請求路徑</param>
        /// <param name="parms">傳入的值，格式為：{city:"上海"，city2:"重慶"}</param>
        /// <param name="token"></param>
        /// <param name="ContentType"></param>
        /// <returns></returns>
        public string HttpPost(string url, string parms, string token,string ContentType= "application/json")
        {
            string result = string.Empty;
            try
            {
                if (url.StartsWith("https:"))
                {
                    //要調用https的API接口，一定要加這句
                    ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;
                }

                Encoding encoding = Encoding.UTF8;  //轉譯編碼
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);//創建
                request.Method = "POST";   //post請求的一些標準參數配置
                request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
                request.ContentType = ContentType;

                //自定義頭部內容
                if (!string.IsNullOrEmpty(token))
                {
                    request.Headers.Add(HttpRequestHeader.Authorization, token);  //添加token
                }

                byte[] buffer = encoding.GetBytes(parms);  //譯編傳入的值格式化為可識別
                request.ContentLength = buffer.Length;  //post傳值參數標配
                request.GetRequestStream().Write(buffer, 0, buffer.Length);
                HttpWebResponse response = (HttpWebResponse)request.GetResponse(); //嘗試獲得要請求的URL的返回消息
                using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
                {
                    result = reader.ReadToEnd();
                }
            }
            catch (Exception ex)
            {
                result = "";
            }
            return result;
        }

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

namespace TranslateProject
{
    class Program
    {
        // 百度雲中開通對應服務應用的 API Key 建議開通應用的時候多選服務(百度雲應用的AK)
        private static String clientId = "qNldYXXtIr2pKBQsv242369Y";
        // 百度雲中開通對應服務應用的 Secret Key(百度雲應用的SK)
        private static String clientSecret = "L6gemOD3pM2PmafyQUBnXpCGEemk18mR";
        static void Main(string[] args)
        {
            try
            {
                #region 文本翻譯-通用版

                //獲取Token：詳細見 https://ai.baidu.com/ai-doc/REFERENCE/Ck3dwjhhu
                string TokenJson = getAccessToken();
                if (!string.IsNullOrEmpty(TokenJson))
                {
                    AccessToken TokenEntity = JsonConvert.DeserializeObject<AccessToken>(TokenJson);
                    if (!string.IsNullOrEmpty(TokenEntity.error))
                    {
                        if (TokenEntity.error == "invalid_client" && TokenEntity.error_description == "unknown client id")
                            Console.WriteLine("API Key不正確");
                        else if (TokenEntity.error == "invalid_client" && TokenEntity.error_description == "Client authentication failed")
                            Console.WriteLine("Secret Key不正確");
                        else
                            Console.WriteLine("未知錯誤：獲取Token失敗");
                        Console.ReadKey();
                        return;
                    }

                    string URL = "https://aip.baidubce.com/rpc/2.0/mt/texttrans/v1?access_token="+ TokenEntity.access_token;
                    string q = "文本翻譯是百度翻譯依托領先的自然語言處理技術推出的在線文本翻譯服務，可支持中、英、日、韓等200+語言互譯，100+語種自動檢測。";
                    string parms = "{ \"q\":\"" + q + "\",\"from\":\"zh\",\"to\":\"en\"}"; //from：翻譯源語言     to：翻譯目標語言     q：請求翻譯內容

                    HttpTool httppost = new HttpTool();
                    var strJson = httppost.HttpPost(URL, parms, "", "application/json;charset=utf-8");
                    Console.WriteLine(strJson);
                    Console.ReadKey();
                }

                #endregion
            }
            catch (Exception ex)
            {
                Console.WriteLine("翻譯失敗：" + ex.Message);
            }
        }

        //調用getAccessToken()獲取的 access_token建議根據expires_in 時間 設置緩存
        public static String getAccessToken()
        {
            try
            {
                String authHost = "https://aip.baidubce.com/oauth/2.0/token";
                HttpClient client = new HttpClient();
                List<KeyValuePair<String, String>> paraList = new List<KeyValuePair<string, string>>();
                paraList.Add(new KeyValuePair<string, string>("grant_type", "client_credentials"));
                paraList.Add(new KeyValuePair<string, string>("client_id", clientId));
                paraList.Add(new KeyValuePair<string, string>("client_secret", clientSecret));

                HttpResponseMessage response = client.PostAsync(authHost, new FormUrlEncodedContent(paraList)).Result;
                String result = response.Content.ReadAsStringAsync().Result;
                return result;
            }
            catch (Exception ex)
            {
                return "";
            }
            
        }
                
        public class AccessToken
        {
            public string refresh_token { get; set; }
            public int expires_in { get; set; }
            public string scope { get; set; }
            public string session_key { get; set; }
            public string access_token { get; set; }
            public string session_secret { get; set; }
            public string error { get; set; }
            public string error_description { get; set; }

        }
    }
}