.net 小程序获取用户UnionID

第一次写博客，写的不好多多海涵！

小程序获取UnionID的流程，用code去换取session_key，然后去解密小程序获取到的那串字符，目前小程序还没提供.net 解密案例，在这里贴出来，互相学习一下！

这里就不多说了，获取原理大家都懂得！

直接上代码

备注：以下代码只供参考，不考虑代码稳健性！！！！！！

   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, , 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));
             }
         }

打个广告：       晨风电影    https://www.chenfengdy.top/