c#发起微信支付

蔚落 2023-10-04 07:53 31阅读 0赞

1.项目引用 Senparc.Weixin.TenPay v1.6.400版本

2.服务端代码

using Senparc.Weixin.TenPay;
    using Senparc.Weixin.TenPay.V3;
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.Mvc;
    
    namespace zzzili
    {    
        public class WXPay
        {
            /// <summary>
            /// 
            /// </summary>
            /// <param name="appId">appid</param>
            /// <param name="mchId">商户id</param>
            /// <param name="body">商品描述</param>
            /// <param name="outTradeNo">第三方订单号</param>
            /// <param name="totalFee">总金额分</param>
            /// <param name="spbillCreateIp">客户端ip</param>
            /// <param name="notifyUrl">通知地址</param>
            /// <param name="openid">用户openid</param>
            /// <param name="key">商户API密钥</param>
            /// <returns></returns>
            public static Dictionary<string, object> startPay(string appId, string mchId, string body, string outTradeNo, int totalFee, string spbillCreateIp, string notifyUrl, string openid, string key)
            {
                var timeStamp = TenPayV3Util.GetTimestamp();//时间戳
                var nonceStr = TenPayV3Util.GetNoncestr();//随机字符串           
                TenPayV3UnifiedorderRequestData tenPayV3 = new TenPayV3UnifiedorderRequestData(appId, mchId, body, outTradeNo, totalFee, spbillCreateIp, notifyUrl, Senparc.Weixin.TenPay.TenPayV3Type.JSAPI, openid, key, nonceStr);
                //提交支付接口
                UnifiedorderResult result = TenPayV3.Unifiedorder(tenPayV3);
    
                string package = "prepay_id=" + result.prepay_id;
                Dictionary<string, object> payEntity = new Dictionary<string, object>();
                payEntity.Add("timeStamp", timeStamp);
                payEntity.Add("nonceStr", nonceStr);
                payEntity.Add("package", package);
                payEntity.Add("signType", "MD5");
                payEntity.Add("paySign", TenPayV3.GetJsPaySign(appId, timeStamp, nonceStr, package, key, "MD5"));
                
                return payEntity;
            }
        }
    }

3.小程序端代码

wx.requestPayment({
    								"timeStamp": res.data.Data.timeStamp,
    								"nonceStr": res.data.Data.nonceStr,
    								"package": res.data.Data.package,
    								"signType": res.data.Data.signType,
    								"paySign": res.data.Data.paySign,
    								"success": function(res) {
    									console.log(res);
    								},
    								"fail": function(res) {
    									console.log(res);
    								},
    								"complete": function(res) {
    									console.log(res);
    								}
    							});

3.支付结果通知

[HttpGet]
            [HttpPost]
            public string paynotify()
            {
                try
                {
                    YFLog.logInfo("PayNotify==========================start");
                    ResponseHandler resHandler = new ResponseHandler(HttpContext.Current);
                    string return_code = resHandler.GetParameter("return_code");
                    string return_msg = resHandler.GetParameter("return_msg");
                    resHandler.SetKey(wx_key);//商户APIkey
                    if (resHandler.IsTenpaySign() && return_code.ToUpper() == "SUCCESS")
                    {
                        //直到这里，才能认为交易真正成功了，可以进行数据库操作，但是别忘了返回规定格式的消息！
                        string out_trade_no = resHandler.GetParameter("out_trade_no");
                        string transaction_id = resHandler.GetParameter("transaction_id");
                        string total_fee = resHandler.GetParameter("total_fee");
                        YFLog.logInfo("PayNotifyUrl回调", "支付成功");
                    }
                    else
                    {
                        YFLog.logInfo("PayNotifyUrl回调", "支付失败");
                    }
                    return string.Format(@"<xml><return_code><![CDATA[{0}]]></return_code><return_msg><![CDATA[{1}]]></return_msg></xml>", return_code, return_msg);
                }
                catch (Exception ex)
                {
                    YFLog.logInfo(ex.Message);
                    throw;
                }
            }