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183 rindas
6.7 KiB
183 rindas
6.7 KiB
using System;
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using System.Collections.Generic;
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using System.Web;
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using System.Threading;
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namespace WxPayAPI
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{
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public class MicroPay
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{
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/**
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* 刷卡支付完整业务流程逻辑
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* @param body 商品描述
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* @param total_fee 总金额
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* @param auth_code 支付授权码
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* @throws WxPayException
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* @return 刷卡支付结果
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*/
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public static string Run(string body, string total_fee, string auth_code)
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{
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Log.Info("MicroPay", "Micropay is processing...");
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WxPayData data = new WxPayData();
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data.SetValue("auth_code", auth_code);//授权码
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data.SetValue("body", body);//商品描述
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data.SetValue("total_fee", int.Parse(total_fee));//总金额
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data.SetValue("out_trade_no", WxPayApi.GenerateOutTradeNo());//产生随机的商户订单号
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WxPayData result = WxPayApi.Micropay(data, 10); //提交被扫支付，接收返回结果
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//如果提交被扫支付接口调用失败，则抛异常
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if (!result.IsSet("return_code") || result.GetValue("return_code").ToString() == "FAIL")
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{
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string returnMsg = result.IsSet("return_msg") ? result.GetValue("return_msg").ToString() : "";
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Log.Error("MicroPay", "Micropay API interface call failure, result : " + result.ToXml());
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throw new WxPayException("Micropay API interface call failure, return_msg : " + returnMsg);
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}
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//签名验证
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result.CheckSign();
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Log.Debug("MicroPay", "Micropay response check sign success");
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//刷卡支付直接成功
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if(result.GetValue("return_code").ToString() == "SUCCESS" &&
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result.GetValue("result_code").ToString() == "SUCCESS")
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{
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Log.Debug("MicroPay", "Micropay business success, result : " + result.ToXml());
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return result.ToPrintStr();
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}
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/******************************************************************
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* 剩下的都是接口调用成功，业务失败的情况
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* ****************************************************************/
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//1）业务结果明确失败
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if(result.GetValue("err_code").ToString() != "USERPAYING" &&
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result.GetValue("err_code").ToString() != "SYSTEMERROR")
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{
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Log.Error("MicroPay", "micropay API interface call success, business failure, result : " + result.ToXml());
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return result.ToPrintStr();
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}
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//2）不能确定是否失败，需查单
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//用商户订单号去查单
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string out_trade_no = data.GetValue("out_trade_no").ToString();
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//确认支付是否成功,每隔一段时间查询一次订单，共查询10次
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int queryTimes = 10;//查询次数计数器
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while(queryTimes-- > 0)
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{
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int succResult = 0;//查询结果
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WxPayData queryResult = Query(out_trade_no, out succResult);
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//如果需要继续查询，则等待2s后继续
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if(succResult == 2)
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{
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Thread.Sleep(2000);
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continue;
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}
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//查询成功,返回订单查询接口返回的数据
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else if(succResult == 1)
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{
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Log.Debug("MicroPay", "Mircopay success, return order query result : " + queryResult.ToXml());
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return queryResult.ToPrintStr();
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}
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//订单交易失败，直接返回刷卡支付接口返回的结果，失败原因会在err_code中描述
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else
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{
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Log.Error("MicroPay", "Micropay failure, return micropay result : " + result.ToXml());
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return result.ToPrintStr();
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}
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}
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//确认失败，则撤销订单
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Log.Error("MicroPay", "Micropay failure, Reverse order is processing...");
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if(!Cancel(out_trade_no))
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{
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Log.Error("MicroPay", "Reverse order failure");
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throw new WxPayException("Reverse order failure！");
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}
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return result.ToPrintStr();
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}
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/**
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*
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* 查询订单情况
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* @param string out_trade_no 商户订单号
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* @param int succCode 查询订单结果：0表示订单不成功，1表示订单成功，2表示继续查询
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* @return 订单查询接口返回的数据，参见协议接口
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*/
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public static WxPayData Query(string out_trade_no, out int succCode)
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{
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WxPayData queryOrderInput = new WxPayData();
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queryOrderInput.SetValue("out_trade_no",out_trade_no);
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WxPayData result = WxPayApi.OrderQuery(queryOrderInput);
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if(result.GetValue("return_code").ToString() == "SUCCESS"
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&& result.GetValue("result_code").ToString() == "SUCCESS")
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{
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//支付成功
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if(result.GetValue("trade_state").ToString() == "SUCCESS")
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{
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succCode = 1;
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return result;
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}
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//用户支付中，需要继续查询
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else if(result.GetValue("trade_state").ToString() == "USERPAYING")
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{
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succCode = 2;
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return result;
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}
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}
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//如果返回错误码为“此交易订单号不存在”则直接认定失败
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if(result.GetValue("err_code").ToString() == "ORDERNOTEXIST")
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{
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succCode = 0;
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}
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else
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{
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//如果是系统错误，则后续继续
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succCode = 2;
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}
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return result;
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}
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/**
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*
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* 撤销订单，如果失败会重复调用10次
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* @param string out_trade_no 商户订单号
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* @param depth 调用次数，这里用递归深度表示
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* @return false表示撤销失败，true表示撤销成功
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*/
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public static bool Cancel(string out_trade_no, int depth = 0)
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{
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if(depth > 10)
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{
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return false;
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}
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WxPayData reverseInput = new WxPayData();
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reverseInput.SetValue("out_trade_no",out_trade_no);
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WxPayData result = WxPayApi.Reverse(reverseInput);
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//接口调用失败
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if(result.GetValue("return_code").ToString() != "SUCCESS")
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{
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return false;
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}
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//如果结果为success且不需要重新调用撤销，则表示撤销成功
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if(result.GetValue("result_code").ToString() != "SUCCESS" && result.GetValue("recall").ToString() == "N")
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{
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return true;
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}
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else if(result.GetValue("recall").ToString() == "Y")
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{
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return Cancel(out_trade_no, ++depth);
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}
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return false;
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}
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}
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}
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