在使用商户转帐到零钱时 发起商户转帐 低于2000 不使用 “收款用户姓名 user_name” 可以正常转帐成功，使用 敏感信息加密后出错 400， 用户姓名加密程序如下： 公钥用的是 证书文件中的 apiclient_cert.pem byte[] publicKey = Encoding.UTF8.GetBytes(证书文件);  public static string RSAEncrypt(string text, byte[] publicKey)         {             using (var x509 = new X509Certificate2(publicKey))             {                 using (var rsa = (RSACryptoServiceProvider)x509.PublicKey.Key)                 {                     var buff = rsa.Encrypt(Encoding.UTF8.GetBytes(text), true);                      return Convert.ToBase64String(buff);                 }             }         } API接口请求程序如下： public static string send(string authorization, string str, string UserAgent)         {             try             {                 HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://api.mch.weixin.qq.com/v3/transfer/batches");                 request.UserAgent = UserAgent;                 request.Method = "POST";                 request.Accept = "application/json";                 request.ContentType = "application/json";                 request.Headers.Add("Authorization", authorization);                 request.Headers.Add("Wechatpay-Serial", WxPayConfig.CERTIFICATE);                 Stream requestStream = request.GetRequestStream();                 StreamWriter streamWriter = new StreamWriter(requestStream);                 streamWriter.Write(str);                 streamWriter.Flush();                 HttpWebResponse response = (HttpWebResponse)request.GetResponse();                 Stream responseStream = response.GetResponseStream();                 StreamReader streamReader = new StreamReader(responseStream);                 str = streamReader.ReadToEnd();                 streamWriter.Close();                 streamReader.Close();             }             catch (Exception e)             {                 Log.Info("出错信息：", e.ToString());             }             return str;         } 具体不知道什么原因，把姓名加入后就不能成功转帐 POST 请求 JSON数据如下： {     "appid": "wx4c00359c0c0ca000",     "out_batch_no": "DP202209170022066342",     "batch_name": "测试转帐",     "batch_remark": "测试商户转帐到零钱",     "total_amount": 100,     "total_num": 1,     "transfer_detail_list": [         {             "out_detail_no": "UD202209170022066343",             "transfer_amount": 100,             "transfer_remark": "测试转帐",             "openid": "oA_LG610T2AOBSJbOC414141xt_8F4",             "user_name": "jAkxHab9eU2SvrD7udOX//s3l+uXzsfEAaMJwKXDhQyMVzLwth2uj/4mILmSTsonqusfvYEagwUU9zYXHZCTETnH0SudYyaVjKA6/hUCkkuS7uxGm3HpwOwpv6sdIXyLk6aBr4A6XZblSTzUhNZG1WweJHL4F7ztuBx43V2E+ksg3D+TFHSqSNN1CSkVJ23jFHxjvKw4NrIKKywkILbODtpIPa6uW6oenyJCIruHr+3sR5Wrb6nZFxBoplrkwe1mUliikPRu8XIq6Qj0/Y0Yggdam/oh1gyPs3jHItJ2hAXGInct/GTCZamyGbyka/7kCrTEYGI92ADMOwoNM/be3w=="         }     ] }