添加微信支付模块

Yi.Framework.Net6/Yi.Framework.WeChatPay/Core/Notify/AbstractNotify.cs

@@ -0,0 +1,72 @@
+using Microsoft.AspNetCore.Http;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Yi.Framework.WeChatPay.Exceptions;
+
+namespace Yi.Framework.WeChatPay.Core
+{
+    public abstract class AbstractNotify
+    {
+        protected HttpContext _httpContext;
+
+        public AbstractNotify(IHttpContextAccessor httpContextAccessor)
+        {
+            this._httpContext = httpContextAccessor.HttpContext;
+        }
+
+        /// <summary>
+        /// 从请求对象中获取信息
+        /// </summary>
+        /// <param name="request"></param>
+        /// <param name="encoding"></param>
+        /// <returns></returns>
+        private async Task<string> GetRawBodyStringAsync(HttpRequest request, Encoding encoding = null)
+        {
+            if (encoding is null)
+            {
+                encoding = Encoding.UTF8;
+            }
+            var stream = new MemoryStream();
+            await request.Body.CopyToAsync(stream);
+            stream.Seek(0, 0);
+            using (var reader = new StreamReader(stream, encoding))
+            {
+                var result = await reader.ReadToEndAsync();
+                return result;
+            }
+        }
+
+        /// <summary>
+        /// 接收从微信支付后台发送过来的数据并验证签名
+        /// </summary>
+        /// <returns>微信支付后台返回的数据</returns>
+        public PayData GetNotifyData()
+        {
+            //接收从微信后台POST过来的数据
+            string content = GetRawBodyStringAsync(_httpContext.Request).Result;
+            Console.WriteLine(this.GetType().ToString(), "Receive data from WeChat : " + content);
+
+            //转换数据格式并验证签名
+            PayData data = new PayData();
+            try
+            {
+                data.FromXml(content);
+            }
+            catch (PayException ex)
+            {
+                throw new Exception("验签失败", ex);
+            }
+
+            Console.WriteLine(this.GetType().ToString(), "Check sign success");
+            return data;
+        }
+
+        //派生类需要重写这个方法，进行不同的回调处理
+        public abstract PayData ProcessNotify();
+
+    }
+}

Yi.Framework.Net6/Yi.Framework.WeChatPay/Core/Notify/ResultNotify.cs

@@ -0,0 +1,101 @@
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Logging;
+
+namespace Yi.Framework.WeChatPay.Core
+{
+    public class ResultNotify : AbstractNotify
+    {
+        private readonly PayApi _PayApi;
+        private readonly ILogger<ResultNotify> _logger;
+        public ResultNotify(PayApi PayApi,ILogger<ResultNotify> logger, IHttpContextAccessor httpContextAccessor) :base(httpContextAccessor)
+        {
+            this._PayApi = PayApi;
+            this._logger = logger;
+        }
+
+        /// <summary>
+        /// 处理支付回调
+        /// </summary>
+        /// <returns></returns>
+        public override PayData ProcessNotify()
+        {
+            PayData notifyData = GetNotifyData();
+            //解析数据
+            string totalFee = notifyData.GetValue("total_fee").ToString();  //订单金额
+            string outTradeNo = notifyData.GetValue("out_trade_no").ToString();  //订单编号
+            string transactionId = notifyData.GetValue("transaction_id").ToString();  //商户订单号
+            string bankType = notifyData.GetValue("bank_type").ToString();  //银行类型
+
+            _logger.LogInformation($"======支付回调参数：{totalFee}=={outTradeNo}=={transactionId}=={bankType}");
+            if (totalFee.Equals("") || outTradeNo.Equals("") || transactionId.Equals("") || bankType.Equals(""))
+            {
+                PayData res = new();
+                res.SetValue("return_code", "FAIL");
+                res.SetValue("return_msg", "支付回调返回数据不正确");
+                _logger.LogInformation("支付错误结果 : " + res.ToXml());
+                return res;
+            }
+
+            //检查支付结果中transaction_id是否存在--流水号
+            if (!notifyData.IsSet("transaction_id"))
+            {
+                //若transaction_id不存在，则立即返回结果给微信支付后台
+                PayData res = new();
+                res.SetValue("return_code", "FAIL");
+                res.SetValue("return_msg", "支付结果中微信订单号不存在");
+                _logger.LogInformation("支付错误结果 : " + res.ToXml());
+
+                return res;
+            }
+
+            //查询订单，判断订单真实性
+            if (!QueryOrder(transactionId))
+            {
+                //若订单查询失败，则立即返回结果给微信支付后台
+                PayData res = new();
+                res.SetValue("return_code", "FAIL");
+                res.SetValue("return_msg", "订单查询失败");
+                _logger.LogInformation("订单查询失败 : " + res.ToXml());
+
+                return res;
+            }
+            //查询订单成功
+            else
+            {
+                // 打印结果 （仅打印）
+                PayData res = new PayData();
+                res.SetValue("return_code", "SUCCESS");
+                res.SetValue("return_msg", "OK");
+                res.SetValue("transaction_id", transactionId);
+                _logger.LogInformation("订单查成功: " + res.ToXml());
+
+                // 设置返回响应结果
+                notifyData.SetValue("return_code", "SUCCESS");
+                notifyData.SetValue("return_msg", "OK");
+
+                return notifyData;
+            }
+        }
+
+        /// <summary>
+        /// 根据流水号查询订单信息
+        /// </summary>
+        /// <param name="transaction_id"></param>
+        /// <returns></returns>
+        private bool QueryOrder(string transaction_id)
+        {
+            PayData req = new PayData();
+            req.SetValue("transaction_id", transaction_id);
+            PayData res = this._PayApi.OrderQuery(req, _httpContext);
+            if (res.GetValue("return_code").ToString() == "SUCCESS" &&
+                res.GetValue("result_code").ToString() == "SUCCESS")
+            {
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+    }
+}