public async Task <IActionResult> ReceivePayResult()
        {
            if (!Request.Headers.TryGetValue("Wechatpay-Nonce", out var nonce) ||
                !Request.Headers.TryGetValue("Wechatpay-Signature", out var signature) ||
                !Request.Headers.TryGetValue("Wechatpay-Timestamp", out var timestamp) ||
                !Request.Headers.TryGetValue("Wechatpay-Serial", out var serial))
            {
                return(Content("非合法的微信通知请求!"));
            }

            string strContent;

            using (var reader = new StreamReader(Request.Body))
            {
                strContent = await reader.ReadToEndAsync();
            }

            var res = await WechatPayHelper.Verify(WechatPayHelper.pay_config, signature.ToString(), serial.ToString(),
                                                   nonce.ToString(), timestamp.ToString().ToInt64(), strContent);

            // 签名正确
            if (res.IsSuccess())
            {
                var encryptResult = JsonSerializer.Deserialize <NotifyPayEncryptResult>(strContent);
                // 获取真实的结果
                var result = encryptResult?.resource.DecrytToPayResult(WechatPayHelper.pay_config.api_v3_key);

                //  do something big
            }
            return(new JsonResult(new { code = "SUCCESS" }));
        }
        /// <summary>
        ///   转化为微信通知的实体(包含验证签名
        /// </summary>
        /// <param name="receiver"></param>
        /// <returns></returns>
        public static async Task <WechatNotifyEncryptResult> ToNotifyEncryptResult(this WechatNotifyReceiver receiver)
        {
            var config = WechatPayHelper.pay_config;

            if (!receiver.header_dics.TryGetValue("Wechatpay-Nonce", out var nonce) ||
                !receiver.header_dics.TryGetValue("Wechatpay-Signature", out var signature) ||
                !receiver.header_dics.TryGetValue("Wechatpay-Timestamp", out var timestamp) ||
                !receiver.header_dics.TryGetValue("Wechatpay-Serial", out var serial))
            {
                return(new WechatNotifyEncryptResult().WithResp(RespCodes.ParaError, "微信支付通知头部参数异常!"));
            }

            var checkRes = await WechatPayHelper.Verify(config, signature, serial, nonce, timestamp.ToInt64(), receiver.body);

            // 签名正确
            if (checkRes.IsSuccess())
            {
                var wRes = JsonSerializer.Deserialize <WechatNotifyEncryptResult>(receiver.body);
                return(wRes ?? new WechatNotifyEncryptResult().WithResp(RespCodes.OperateFailed, "微信支付通知内容异常!"));
            }
            return(new WechatNotifyEncryptResult().WithResp(checkRes));
        }