.Net獲取小程序用戶UnionID

第一次寫博客，寫的不好多多海涵！

    小程序獲取UnionID的流程，用code去換取session_key，然后去解密小程序獲取到的那串字符，目前小程序還沒提供.net 解密案例，在這里貼出來，互相學習一下！

這里就不多說了，獲取原理大家都懂得！

 直接上代碼

 

備注：以下代碼只供參考，不考慮代碼穩健性！！！！！！

 

  public string GetMiniAppUserUnionID(string code, string userInfo, string iv)
  {
            Dictionary<string, string> parames = new Dictionary<string, string>();
            parames.Add("appid", "");
            parames.Add("secret", "");
            parames.Add("js_code", code);
            parames.Add("grant_type", "authorization_code");
            string res = HttpWebResponseHelper.Get("https://api.weixin.qq.com/sns/jscode2session", parames);
            var obj = Parse(res);
               string unionid="";
            if (!res.Contains("errcode"))
            {
                userJson = AESDecrypt(userInfo, obj.session_key, iv);
                var userobj = Parse(userJson);
                unionid = userobj.unionId;
               }

               return unionid ;

 } 

AESDecrypt解密算法

        /// <summary>
        /// AES解密
        /// </summary>
        /// <param name="text"></param>
        /// <param name="password"></param>
        /// <param name="iv"></param>
        /// <returns></returns>
        public static string AESDecrypt(string text, string password, string iv)
        {
            RijndaelManaged rijndaelCipher = new RijndaelManaged();
            rijndaelCipher.Mode = CipherMode.CBC;
            rijndaelCipher.Padding = PaddingMode.PKCS7;

            byte[] encryptedData = Convert.FromBase64String(text);
            byte[] pwdBytes = Convert.FromBase64String(password);

            rijndaelCipher.Key = pwdBytes;

            if (!string.IsNullOrEmpty(iv))
            {
                byte[] ivBytes = Convert.FromBase64String(iv); 
                rijndaelCipher.IV = ivBytes;
            }
            ICryptoTransform transform = rijndaelCipher.CreateDecryptor();
            byte[] plainText = transform.TransformFinalBlock(encryptedData, 0, encryptedData.Length);

            return Encoding.UTF8.GetString(plainText);

        }

 

序列化方法

  public static dynamic Parse(string json, Encoding encoding)
        {
            using (var reader = JsonReaderWriterFactory.CreateJsonReader(encoding.GetBytes(json), XmlDictionaryReaderQuotas.Max))
            {
                return ToValue(XElement.Load(reader));
            }
        }

 

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