", Host: api.mch.weixin.qq.com, Connection: Keep-Alive, User-Agent: WechatPay-Apache-HttpClient/null (Mac OS X/10.14.6) Java/1.8.0_333, Accept-Encoding: gzip,deflate]] download failed,resp code=404,body={"code":"RESOURCE_NOT_EXISTS","message":"无可用的平台证书，请在商户平台-API安全申请使用微信支付公钥。可查看指引https://pay.weixin.qq.com/doc/v3/merchant/4012153196"} java.io.IOException: request failed

看微信支付相关API有V2 V3版本，我使用的是微信小程序云开发SDK，属于哪个版本的API？ 如何排查签名问题？

平台证书  怎么拿，要实现定期  向代理商已经发起提现申请的商户， 定时支付

[图片]

生成的head： Authorization:WECHATPAY2-SHA256-RSA2048 mchid="171***12",nonce_str="9d2640bee3dc439e877cbe0181e0b569",signature="jFKNe+YM/UmNkwRpXnodrJuqbHZl74DKPhUgkRuowSitPH6k91SVkWP4YeQ8PP9kfzgzLFlbOn8K0XQ2AQIqzsvGVDAvneTuqg/oAuXdUSFyvNLzRlyftoqILFx0lwSEhWWST62RUS7OK+y8CXdJ7OdnKsol66UgrvKEArZ+u9l/Nk7sz5ti1cmpMYiEHsr55Iri7yw3JnA8esy1CM2eHmG3XaYduVDHQMeHwALJb+gVyNK6ZjT/6dKgY08YYMnlooKbK22qfQ4w2pJw5aI+LfTkLDjyHUI7jxL2Z4HD/CuYgK/rWEE3s6hO3s4oW2k9np8cweSkdWqdH9P9Gq8SFg==",timestamp="1751437716",serial_no="5D1E3AA427034E38F36A7D75B81F4EDE420E65B9";Wechatpay-Serial:5D1E3AA***5B9;Accept:application/json;User-Agent:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;);Content-Type:application/json; 调试过过程中，httpWebResponse = (HttpWebResponse)httpRequest.GetResponse(); 返回 ：微信支付 商家转帐 请确认待处理的消息是否为加密后的密文 responseText = {"code":"PARAM_ERROR","message":"请确认待处理的消息是否为加密后的密文"} 请问哪里需要 加密。aasp.net4.5 使用什么方法 进行加密？ 代码参考：https://developers.weixin.qq.com/community/develop/article/doc/00082cf0934a106b420a678d45b013 { string requestBody =" {\"appid\":\"wx48e923d9886gh\",\"out_bill_no\":\"preub15\",\"transfer_scene_id\":\"1000\",\"transfer_remark\":\"0\",\"openid\":\"oyQFh*******jBsdiwys6jt6tu4\",\"transfer_amount\":\"120\",\"total_num\":\"1\",\"user_name\":\"**堂\",\"user_recv_perception\":\"现金奖励\",\"transfer_scene_report_infos\":[{\"info_type\":\"佣金报酬\",\"info_content\":\"佣金提现报酬\"}]}"; string physicalApplicationPath =  HttpContext.Current.Request.PhysicalApplicationPath; string pemPath = physicalApplicationPath + "config/apiclient_key.pem"; var pemContent = File.ReadAllText(pemPath)                 .Replace("-----BEGIN PRIVATE KEY-----", "")                 .Replace("-----END PRIVATE KEY-----", "") .Replace("\n", ""); string method = "POST"; string timestamp = Convert.ToInt64((DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0)).TotalSeconds).ToString(); string nonce = Guid.NewGuid().ToString("N"); string url = "/v3/fund-app/mch-transfer/transfer-bills"; string message = $"{method}\n{url}\n{timestamp}\n{nonce}\n{requestBody}\n"; string signature = Sign( message,  pemContent);              string CertSerialNo = "5D1E3AA**********81F0E65B9"; string token = $"WECHATPAY2-SHA256-RSA2048 " +                            $"mchid=\"{this.mchid}\"," +                            $"nonce_str=\"{nonce}\"," +                            $"signature=\"{signature}\"," +                            $"timestamp=\"{timestamp}\"," +                            $"serial_no=\"{CertSerialNo}\""; string Gateway = "https://api.mch.weixin.qq.com/v3/fund-app/mch-transfer/transfer-bills";                 // 3. 发送请求                 HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(Gateway); httpRequest.Method = "POST"; httpRequest.Headers.Add("Authorization", token); httpRequest.Headers.Add("Wechatpay-Serial", CertSerialNo); httpRequest.Accept = "application/json"; httpRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)"; httpRequest.ContentType = "application/json";                 HttpWebResponse httpWebResponse = null;             // 写入请求体 Stream stream = null; byte[] data = Encoding.UTF8.GetBytes(requestBody); stream = httpRequest.GetRequestStream(); stream.Write(data, 0, data.Length); stream.Close();           // 4. 获取响应 httpWebResponse = (HttpWebResponse)httpRequest.GetResponse(); StreamReader streamReader = new StreamReader(httpWebResponse.GetResponseStream(), Encoding.UTF8);                 string text = streamReader.ReadToEnd().Trim(); streamReader.Close(); }         protected string Sign(string message, string privateKey)         {             // SHA256withRSA             //根据需要加签时的哈希算法转化成对应的hash字符节             //byte[] bt = Encoding.GetEncoding("utf-8").GetBytes(str);             byte[] bt =Encoding.UTF8.GetBytes(message);             var sha256 = new SHA256CryptoServiceProvider();             byte[] rgbHash = sha256.ComputeHash(bt);             RSACryptoServiceProvider key = new RSACryptoServiceProvider();             var _privateKey = RSAKeyConvert.RSAPrivateKeyJava2DotNet(privateKey);             key.FromXmlString(_privateKey);             RSAPKCS1SignatureFormatter formatter = new RSAPKCS1SignatureFormatter(key);             formatter.SetHashAlgorithm("SHA256");//此处是你需要加签的hash算法，需要和上边你计算的hash值的算法一致，不然会报错。             byte[] inArray = formatter.CreateSignature(rgbHash);             return Convert.ToBase64String(inArray);         } protected string RSAPrivateKeyJava2DotNet(string privateKey) { RsaPrivateCrtKeyParameters privateKeyParam = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(Convert.FromBase64String(privateKey)); return string.Format("<RSAKeyValue><Modulus>{0}</Modulus><Exponent>{1}</Exponent><P>{2}</P><Q>{3}</Q><DP>{4}</DP><DQ>{5}</DQ><InverseQ>{6}</InverseQ><D>{7}</D></RSAKeyValue>", Convert.ToBase64String(privateKeyParam.Modulus.ToByteArrayUnsigned()), Convert.ToBase64String(privateKeyParam.PublicExponent.ToByteArrayUnsigned()), Convert.ToBase64String(privateKeyParam.P.ToByteArrayUnsigned()), Convert.ToBase64String(privateKeyParam.Q.ToByteArrayUnsigned()), Convert.ToBase64String(privateKeyParam.DP.ToByteArrayUnsigned()), Convert.ToBase64String(privateKeyParam.DQ.ToByteArrayUnsigned()), Convert.ToBase64String(privateKeyParam.QInv.ToByteArrayUnsigned()), Convert.ToBase64String(privateKeyParam.Exponent.ToByteArrayUnsigned())); }

为什么微信支付平台的下载平台证书的网页，现在连接 不上呢？证书下载工具的链接，也是打开 失败，是什么原因

RSAPublicKeyConfig config = new RSAPublicKeyConfig.Builder() .merchantId(ehisPayInfo.getMerchantId()) .publicKey(ehisPayInfo.getPublicKey()) .publicKeyId(ehisPayInfo.getPublicKeyId()) .privateKey(ehisPayInfo.getPrivateKey()) .merchantSerialNumber(ehisPayInfo.getMchSerialNo()) .apiV3Key(ehisPayInfo.getApiV3Key()) .build(); // 构建service JsapiService service = new JsapiService.Builder().config(config).build(); PrepayResponse response = service.prepay(request); [图片]

还差两个月，微信支付的平台证书就要过期了。为什么还看不到灰度的按钮。之前有个另外的号，是自动给我开启了新旧证书

[图片] 平台证书要到期了，找不到更换的链接。求指导，谢谢！

目前开发的软件微信支付全是v2的接口，平台证书是五年前申请的。现在快过期了，找不到更换按钮。这种情况怎么更换呢。全是v2的接口需要切换到支付公钥吗？