/// <summary>
/// 统一下单
/// </summary>
/// <param name="unifiedOrderInfo"></param>
/// <param name="errMessage"></param>
/// <returns></returns>
public JsAPIParameter UnifiedOrder(UnifiedOrderInfo unifiedOrderInfo, out string errMessage)
{
if (unifiedOrderInfo == null)
{
errMessage = "下单数据为空";
return null;
}
if (!unifiedOrderInfo.CheckRequired(out errMessage))
{
return null;
}
var paymentInfoRepository = DependencyManager.Resolve<IPaymentInfoRepository>();
//判断当前订单号是否存在
var orderInfo = paymentInfoRepository.GetPaymentInfoBySysOrderNo(unifiedOrderInfo.PayModuleName,
unifiedOrderInfo.OutTradeNo);
if (orderInfo != null && orderInfo.Status != 0 && orderInfo.OpenId.Equals(unifiedOrderInfo.Openid))
//0表示尚未支付
{
errMessage = "系统异常，请重新下单操作";
return null;
}
//调用微信统一下单接口
var appInfo = DependencyManager.Resolve<IAppInfoRepository>().GetAppInfo(unifiedOrderInfo.AppId);
var payment =
DependencyManager.Resolve<Weixin.Repository.IPaymentInfoRepository>()
.GetModelByAppId(unifiedOrderInfo.AppId);
if (string.IsNullOrEmpty(appInfo.AppId) || string.IsNullOrEmpty(payment.MchId) ||
string.IsNullOrEmpty(payment.Paykey))
{
errMessage = "当前公众号支付配置不完整";
return null;
}
var packageReqHandler = new RequestHandler(default(HttpContext));
//初始化
packageReqHandler.Init();
var nonceStr = TenPayV3Util.GetNoncestr();
//设置package订单参数
packageReqHandler.SetParameter("appid", appInfo.AppId); //公众账号ID
packageReqHandler.SetParameter("mch_id", payment.MchId); //商户号
packageReqHandler.SetParameter("nonce_str", nonceStr); //随机字符串
packageReqHandler.SetParameter("body", unifiedOrderInfo.Body); //商品描述
packageReqHandler.SetParameter("attach", unifiedOrderInfo.PayModuleName); //向微信传递系统支付模块ID
packageReqHandler.SetParameter("out_trade_no", unifiedOrderInfo.OutTradeNo); //商家订单号
//debug模式下，单位为
packageReqHandler.SetParameter("total_fee", PayHelper.IsDebug
? (unifiedOrderInfo.TotalFee / 100).ToString()
: (unifiedOrderInfo.TotalFee * 100).ToString());
packageReqHandler.SetParameter("spbill_create_ip", "1.1.1.1"); //用户的公网ip，不是商户服务器IP
packageReqHandler.SetParameter("notify_url", PayHelper.GetPayNotifyUrl()); //接收财付通通知的URL
packageReqHandler.SetParameter("trade_type", TenPayV3Type.JSAPI.ToString()); //交易类型
packageReqHandler.SetParameter("openid", unifiedOrderInfo.Openid); //用户的openId
var sign = packageReqHandler.CreateMd5Sign("key", payment.Paykey);
packageReqHandler.SetParameter("sign", sign); //签名
var data = packageReqHandler.ParseXML();
//同意下单，获取到预付订单号
var unifiedOrderResult = TenPayV3Helper.Unifiedorder(data);
var rtnUnifiedOrderResult = new UnifiedOrderResponse(unifiedOrderResult);
//下单成功，保存下单对象
if (rtnUnifiedOrderResult.IsSuccess)
{
var paymentInfo = new PaymentInfo
{
PaymentId = Guid.NewGuid(),
AppId = unifiedOrderInfo.AppId,
CreateTime = DateTime.Now,
Description = "无",
Body = unifiedOrderInfo.Body,
ModuleName = unifiedOrderInfo.PayModuleName,
OrderCode = unifiedOrderInfo.OutTradeNo,
OrderId = unifiedOrderInfo.OrderId,
OpenId = unifiedOrderInfo.Openid,
PayAmount = unifiedOrderInfo.TotalFee,
WxOrderCode = rtnUnifiedOrderResult.prepay_id,
ModifyTime = DateTime.Now,
Status = 0
};
paymentInfoRepository.Add(paymentInfo);
var jsApiParameters = rtnUnifiedOrderResult.GetJsApiParameters(payment.Paykey);
return jsApiParameters;
}
errMessage = "下单失败";
return null;
}