public async Task <string> WxPayNotify()
{
var logger = _loggerFactory.CreateLogger <NotifyController>();
try
{
var wxPayConfig = _orderService.GetWxPayConfig();
WxPayData notifyData = await WxPayApi.GetNotifyData(wxPayConfig, HttpContext.Request.Body);
//检查支付结果中transaction_id是否存在
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
WxPayData res = new WxPayData();
res.SetValue("return_code", "FAIL");
res.SetValue("return_msg", "支付结果中微信订单号不存在");
logger.LogError("The Pay result is error : " + res.ToXml());
return(res.ToXml());
}
string transaction_id = notifyData.GetValue("transaction_id").ToString();
//查询订单，判断订单真实性
if (!WxPayHelper.QueryOrder(wxPayConfig, transaction_id))
{
//若订单查询失败，则立即返回结果给微信支付后台
WxPayData res = new WxPayData();
res.SetValue("return_code", "FAIL");
res.SetValue("return_msg", "订单查询失败");
logger.LogError("Order query failure : " + res.ToXml());
return(res.ToXml());
}
//查询订单成功
else
{
var result_code = notifyData.GetValue("result_code").ToString();
var total_fee = int.Parse(notifyData.GetValue("total_fee").ToString());
var out_trade_no = notifyData.GetValue("out_trade_no").ToString();
var time_end = notifyData.GetValue("time_end").ToString();
WxPayData res = new WxPayData();
//处理已支付
var order = _orderService.GetPayOrder(out_trade_no);
if (order == null || order.PayStatus == 2)
{
res.SetValue("return_code", "SUCCESS");
res.SetValue("return_msg", "OK");
return(res.ToXml());
}
////设置成功或失败
var status = result_code == "SUCCESS" ? 2 : 3;
if (status == 1 && total_fee != (int)(order.Amount * 100))
{
res.SetValue("return_code", "FAIL");
res.SetValue("return_msg", "订单金额不正确");
logger.LogError("Order query failure[订单金额不正确] : " + res.ToXml());
return(res.ToXml());
}
_orderService.SetPay(order.Id, status,
DateTime.ParseExact(time_end, "yyyyMMddHHmmss", CultureInfo.CurrentCulture));
//成功后根据订单类型处理不同的逻辑
_orderService.DealPayOK(order);
res.SetValue("return_code", "SUCCESS");
res.SetValue("return_msg", "OK");
logger.LogInformation("order query success : " + res.ToXml());
return(res.ToXml());
}
}
catch (Exception exp)
{
WxPayData res = new WxPayData();
res.SetValue("return_code", "FAIL");
res.SetValue("return_msg", exp.Message);
logger.LogError("order query success : " + res.ToXml());
return(res.ToXml());
}
}