fix:新增微信退款接口

zhengyuxuan

2025-03-18 5ce19e37621a1c5a5d1e92280f560be97786594e

fix:新增微信退款接口

 LifePayment/LifePayment.Application/LifePay/LifePayService.cs

@@ -993,6 +993,9 @@
            throw new UserFriendlyException("当前订单状态无法退款");
        }

        /// TODO 退款请求完成后如何操作
        /// var refundResult = await WxPayDomesticRefunds(order.OrderNo, order.RefundApplyRemark, Convert.ToInt32(order.PayAmount * 100), Convert.ToInt32(order.PayAmount * 100));

        order.PayStatus = LifePayStatusEnum.已退款;
        order.LifePayOrderStatus = LifePayOrderStatusEnum.已退款;
        order.RefundCredentialsImgUrl = input.RefundCredentialsImgUrl;
@@ -1043,6 +1046,26 @@
        await _lifePayOrderRepository.UpdateAsync(order);
    }

    public async Task<WxPayDomesticRefundsReponse> WxPayDomesticRefunds(string outTradeNo, string reason, int refund, int total, string currency = "CNY")
    {
        WxPayDomesticRefundsRequest req = new WxPayDomesticRefundsRequest
        {
            OutTradeNo = outTradeNo,
            OutRefundNo = CreateRefundOrderNo(),
            Reason = reason,
            Amount = new Model_WxPayDomesticRefunds_Amount
            {
                Refund = refund,
                Total = total,
                Currency = "CNY"
            },
            NotifyUrl = $"{_wxPayOptions.NotifyUrl}{LifePaymentConstant.WxPayDomesticRefundsNotifySectionUrl}",
        };

        var res = await _wxPayApi.WxPayDomesticRefunds(req);
        return res;
    }

    public async Task<int> AddUpdateUserAccount(AddUpdateUserAccountInput input)
    {
        if (input.Id.HasValue)
@@ -1064,7 +1087,6 @@
        }
        else
        {

            var repeatAccountContent = await _lifePayAccount.Where(x => x.UserId == input.UserId && x.LifePayType == input.LifePayType && x.Content == input.Content)
                                            .FirstOrDefaultAsync();
            CheckExtensions.IfTrueThrowUserFriendlyException(repeatAccountContent != null, "户号已存在");
@@ -1240,6 +1262,11 @@
        return "JF" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + GlobalRandom.GetRandomNum(4);
    }

    private string CreateRefundOrderNo()
    {
        return "JFTK" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + GlobalRandom.GetRandomNum(4);
    }

    private (decimal PayAmont, decimal DiscountAmount, decimal RechargeAmount) CalculateAmount(decimal amount, decimal rate)
    {
        /// 正常支付

 LifePayment/LifePayment.Domain.Shared/Enum/LifePay/LifePayEnum.cs

@@ -59,6 +59,25 @@
    退款失败 = 60,
}

public enum LifePayRefundStatusEnum
{
    [Description("无需退款")]
    无需退款 = 0,

    [Description("待退款")]
    待退款 = 10,

    [Description("退款中")]
    退款中 = 20,

    [Description("已退款")]
    已退款 = 30,

    [Description("退款驳回")]
    退款驳回 = 40,

}

public enum LifePayRateTypeEnum
{ 
    默认话费折扣=10,

 LifePayment/LifePayment.Domain.Shared/LifePaymentConstant.cs

@@ -53,7 +53,11 @@

        public const string PayTransactionsH5 = "/v3/pay/transactions/h5";

        public const string WxPayDomesticRefunds = "/v3/refund/domestic/refunds";

        public const string WxRechargeNotifySectionUrl = "/api/WxPayNotify/WxRechargeNotify";

        public const string WxPayDomesticRefundsNotifySectionUrl = "/api/WxPayNotify/WxPayDomesticRefundsNotify";

        public const string AliRechargeNotifySectionUrl = "/api/AliPayNotify/AliRechargeNotify";

@@ -423,6 +427,18 @@

            public const string 支付成功 = "SUCCESS";
        }

        public static class WxPayRefundStatus
        {
            public const string 退款成功 = "SUCCESS";

            public const string 退款关闭 = "CLOSED";

            public const string 退款处理中 = "PROCESSING";

            public const string 退款异常 = "ABNORMAL";

        }
        public static class ThumbsUpStatus
        {
            public const int 取消 = 0;

 LifePayment/LifePayment.Domain.Shared/WeChat/WxPayPostBaseModel.cs

@@ -594,4 +594,182 @@

        public string Attach { get; set; }
    }

    /// <summary>
    /// 申请退款
    /// </summary>
    public class WxPayDomesticRefundsRequest
    {
        /// <summary>
        /// 微信支付订单号 和out_trade_no必须二选一进行传参
        /// </summary>
        [JsonProperty("transaction_id")]
        public string TransactionId { get; set; }

        /// <summary>
        /// 商户订单号 和out_trade_no必须二选一进行传参
        /// </summary>
        [JsonProperty("out_trade_no")]
        public string OutTradeNo { get; set; }

        /// <summary>
        /// 商户退款单号 必填
        /// </summary>
        [JsonProperty("out_refund_no")]
        public string OutRefundNo { get; set; }

        /// <summary>
        ///  退款原因
        /// </summary>
        [JsonProperty("reason")]
        public string Reason { get; set; }

        /// <summary>
        /// 退款结果回调url
        /// </summary>
        [JsonProperty("notify_url")]
        public string NotifyUrl { get; set; }

        /// <summary>
        /// 退款资金来源
        /// </summary>
        [JsonProperty("funds_account")]
        public string FundsAccount { get; set; }

        /// <summary>
        /// 金额信息 必填
        /// </summary>
        [JsonProperty("amount")]
        public Model_WxPayDomesticRefunds_Amount Amount { get; set; }
    }
    public class Model_WxPayDomesticRefunds_Amount
    {
        /// <summary>
        /// 退款金额，单位为分，只能为整数
        /// </summary>
        [JsonProperty("refund")]
        public int Refund { get; set; }

        /// <summary>
        /// 原订单金额
        /// </summary>
        [JsonProperty("total")]
        public int Total { get; set; }

        /// <summary>
        /// 退款币种
        /// </summary>
        [JsonProperty("currency")]
        public string Currency { get; set; } = "CNY";
    }

    public class WxPayDomesticRefundsReponse
    {
        /// <summary>
        /// 微信支付退款单号
        /// </summary>
        [JsonProperty("refund_id")]
        public string RefundId { get; set; }

        /// <summary>
        /// 商户退款单号
        /// </summary>
        [JsonProperty("out_refund_no")]
        public string OutRefundNo { get; set; }

        /// <summary>
        /// 微信支付订单号
        /// </summary>
        [JsonProperty("transaction_id")]
        public string TransactionId { get; set; }

        /// <summary>
        /// 商户订单号
        /// </summary>
        [JsonProperty("out_trade_no")]
        public string OutTradeNo { get; set; }

        /// <summary>
        /// 退款渠道 ORIGINAL: 原路退款 BALANCE: 退回到余额 OTHER_BALANCE: 原账户异常退到其他余额账户 OTHER_BANKCARD: 原银行卡异常退到其他银行卡(发起异常退款成功后返回)
        /// </summary>
        [JsonProperty("channel")]
        public string Channel {  get; set; }

        /// <summary>
        /// 退款入账账户
        /// </summary>
        [JsonProperty("user_received_account")]
        public string UserReceivedAccount { get; set; }

        /// <summary>
        /// 退款成功时间
        /// </summary>
        [JsonProperty("success_time")]
        public string SuccessTime { get; set; }

        /// <summary>
        /// 退款创建时间
        /// </summary>
        [JsonProperty("create_time")]
        public string CreateTime { get; set; }

        /// <summary>
        /// 退款状态
        /// </summary>
        [JsonProperty("status")]
        public string Status { get; set; }

        /// <summary>
        /// 资金账户
        /// </summary>
        [JsonProperty("funds_account")]
        public string FundsAccount { get; set; }

        /// <summary>
        /// 金额信息
        /// </summary>
        [JsonProperty("amount")]
        public Model_WxPayRetuenDomesticRefunds_Amount Amount { get; set; }

    }

    public class Model_WxPayRetuenDomesticRefunds_Amount: Model_WxPayDomesticRefunds_Amount
    {
        /// <summary>
        /// 用户实际支付金额
        /// </summary>
        [JsonProperty("payer_total")]
        public int PayerTotal { get; set; }

        /// <summary>
        /// 用户退款金额
        /// </summary>
        [JsonProperty("payer_refund")]
        public int PayerRefund { get; set; }

        /// <summary>
        /// 应结退款金额
        /// </summary>
        [JsonProperty("settlement_refund")]
        public int SettlementRefund { get; set; }

        /// <summary>
        /// 应结订单金额
        /// </summary>
        [JsonProperty("settlement_total")]
        public int SettlementTotal { get; set; }

        /// <summary>
        /// 优惠退款金额
        /// </summary>
        [JsonProperty("discount_refund")]
        public int DiscountRefund { get; set; }

        /// <summary>
        /// 手续费退款金额
        /// </summary>
        [JsonProperty("refund_fee")]
        public int RefundFee { get; set; }

    }
}

 LifePayment/LifePayment.Domain/WeChat/IWxPayApi.cs

@@ -21,6 +21,7 @@
        Task<ModelPayPrePayId> PayTransactionsJsAPI(ModelMiniPayRequest input);

        string GeneratePaySignByKey(string message);
      

        Task<WxPayDomesticRefundsReponse> WxPayDomesticRefunds(WxPayDomesticRefundsRequest input);
    }
}

 LifePayment/LifePayment.Domain/WeChat/WxClient.cs

@@ -35,7 +35,18 @@
            AddAuthHeader(client, BuildAuth(body, function));
            var data = new StringContent(body, Encoding.UTF8, "application/json");
            var responseMessage = await client.PostAsync($"{Options.Url}{function}", data);
            
            var str = await responseMessage.Content.ReadAsStringAsync();
            var result = JsonConvert.DeserializeObject<TResult>(str);
            return result;
        }

        public async Task<TResult> RefundsPostAsync<TInput, TResult>(TInput input, string function)
        {
            var client = HttpClientFactory.CreateClient(LifePaymentConstant.WxPayHttpClientName);
            var body = JsonConvert.SerializeObject(input);
            AddAuthHeader(client, BuildAuth(body, function));
            var data = new StringContent(body, Encoding.UTF8, "application/json");
            var responseMessage = await client.PostAsync($"{Options.Url}{function}", data);
            var str = await responseMessage.Content.ReadAsStringAsync();
            var result = JsonConvert.DeserializeObject<TResult>(str);
            return result;
@@ -129,9 +140,9 @@
            gcmBlockCipher.DoFinal(plaintext, length);
            return Encoding.UTF8.GetString(plaintext);
        }

        public string GeneratePaySignByKey(string message)
        {
           
            return WxPayRsaHelper.Sign(message);
        }

@@ -148,8 +159,5 @@
            string signature = WxPayRsaHelper.Sign(message);
            return $"mchid=\"{Options.Mchid}\",nonce_str=\"{nonce}\",timestamp=\"{timestamp}\",serial_no=\"{Options.SerialNo}\",signature=\"{signature}\"";
        }



    }
}

 LifePayment/LifePayment.Domain/WeChat/WxPayApi.cs

@@ -29,6 +29,10 @@
            return result;
        }


        public async Task<WxPayDomesticRefundsReponse> WxPayDomesticRefunds(WxPayDomesticRefundsRequest input)
        {
            var result = await RefundsPostAsync<WxPayDomesticRefundsRequest, WxPayDomesticRefundsReponse>(input, LifePaymentConstant.WxPayDomesticRefunds);
            return result;
        }
    }
}