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