/// <summary>
/// 根据商户订单号查询订单接口，参考：https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_2
/// 该接口提供所有微信支付订单的查询，商户可以通过该接口主动查询订单状态，完成下一步的业务逻辑。
/// </summary>
/// <param name="out_trade_no"></param>
/// <returns></returns>
public static WeChatPayData OrderQueryByOutTradeNo(string out_trade_no)
{
if (string.IsNullOrEmpty(out_trade_no))
{
throw new ArgumentNullException("查询订单，缺少out_trade_no");
}
//微信支付消息发送报文
WeChatPayData sendPayData = new WeChatPayData();
//微信支付消息接收报文
WeChatPayData recvPayData = new WeChatPayData();
try
{
string url = "https://api.mch.weixin.qq.com/pay/orderquery";
sendPayData.SetValue("appid", Config.APPID); //公众账号ID
sendPayData.SetValue("mch_id", Config.MCHID); //商户号
sendPayData.SetValue("out_trade_no", out_trade_no); //商户订单号
sendPayData.SetValue("nonce_str", WeChatPayData.MakeNonceStr()); //随机字符串
sendPayData.SetValue("sign", sendPayData.MakeSign()); //签名
string sendMsg = sendPayData.ToXml();
var start = DateTime.Now;
Log.Debug("JsApiPay", "OrderQuery request : " + sendMsg);
string recvMsg = HttpService.Post(sendMsg, url, false, Config.WeChatAPITimeout);//调用HTTP通信接口提交数据
Log.Debug("JsApiPay", "OrderQuery response : " + recvMsg);
var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);//获得接口耗时
Log.Debug("JsApiPay", "OrderQuery 接口耗时 : " + timeCost);
//将xml格式的数据转化为对象以返回
recvPayData.FromXml(recvMsg);
//校验微信接口返回值return_code和result_code
if (recvPayData.IsSet("return_code") && recvPayData.GetValue("return_code").ToString().ToUpper() == "SUCCESS")
{
if (!recvPayData.CheckSign())
{
throw new Exception("微信“按out_trade_no查询订单”消息sign签名校验错误");
}
//return_code和result_code同时为SUCCESS，且sign签名正确，则返回此消息数据
if (recvPayData.IsSet("result_code") && recvPayData.GetValue("result_code").ToString().ToUpper() == "SUCCESS")
{
return(recvPayData);
}
else //result_code返回FAIL，可能微信支付中此订单号不存在、微信支付系统异常
{
if (recvPayData.IsSet("err_code") && recvPayData.IsSet("err_code_des"))
{
throw new Exception(recvPayData.GetValue("err_code").ToString() + ":" + recvPayData.GetValue("err_code_des").ToString());
}
}
}
else //return_code返回FAIL，可能签名失败、参数格式校验错误
{
if (recvPayData.IsSet("return_msg"))
{
throw new Exception(recvPayData.GetValue("return_msg").ToString());
}
}
}
catch (Exception ex)
{
Log.Error("WxPayAPI", ex.Message);
throw ex;
}
return(null);
}
/// <summary>
/// 微信支付，关闭订单接口
/// 以下情况需要调用关单接口：商户订单支付失败需要生成新单号重新发起支付，要对原订单号调用关单，避免重复支付；系统下单后，用户支付超时，系统退出不再受理，避免用户继续，请调用关单接口。
/// 注意：订单生成后不能马上调用关单接口，最短调用时间间隔为5分钟。
/// API接口参考：https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_3
/// </summary>
/// <param name="orderID"></param>
/// <returns></returns>
public static WeChatPayData CloseOrder(string orderID)
{
if (string.IsNullOrEmpty(orderID))
{
throw new ArgumentNullException("orderID不能为空");
}
//微信支付消息发送报文
WeChatPayData sendPayData = new WeChatPayData();
//微信支付消息接收报文
WeChatPayData recvPayData = new WeChatPayData();
try
{
string url = "https://api.mch.weixin.qq.com/pay/closeorder";
sendPayData.SetValue("appid", Config.APPID); //公众账号ID
sendPayData.SetValue("mch_id", Config.MCHID); //商户号
sendPayData.SetValue("nonce_str", WeChatPayData.MakeNonceStr()); //随机字符串
sendPayData.SetValue("out_trade_no", orderID); //商户订单号
sendPayData.SetValue("sign", sendPayData.MakeSign()); //签名
string sendMsg = sendPayData.ToXml();
string recvMsg = HttpService.Post(sendMsg, url, false, Config.WeChatAPITimeout);
recvPayData.FromXml(recvMsg);
//校验返回状态码
if (recvPayData.IsSet("return_code") && recvPayData.GetValue("return_code").ToString().ToUpper() == "SUCCESS")
{
//当return_code为SUCCESS，才有sign参数返回
if (!recvPayData.CheckSign())
{
throw new Exception("sign签名校验错误");
}
//return_code和result_code同时为SUCCESS，且sign签名正确，则返回此消息数据
if (recvPayData.IsSet("result_code") && recvPayData.GetValue("result_code").ToString().ToUpper() == "SUCCESS")
{
return(recvPayData);
}
else //result_code返回FAIL，可能微信支付中此订单号不存在、微信支付系统异常
{
if (recvPayData.IsSet("err_code") && recvPayData.IsSet("err_code_des"))
{
throw new Exception(recvPayData.GetValue("err_code").ToString() + ":" + recvPayData.GetValue("err_code_des").ToString());
}
}
}
else //return_code返回FAIL，可能签名失败、参数格式校验错误
{
if (recvPayData.IsSet("return_msg"))
{
throw new Exception(recvPayData.GetValue("return_msg").ToString());
}
}
}
catch (Exception ex)
{
Log.Error("WxPayAPI", ex.Message);
}
return(recvPayData);
}
/// <summary>
/// 微信支付统一下单，接口参考：https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1
/// 除被扫支付场景以外，商户系统先调用该接口在微信支付服务后台生成预支付交易单，返回正确的预支付交易回话标识prepay_id，有效期2小时，再按扫码、JSAPI、APP等不同场景生成交易串调起支付。
/// </summary>
/// <param name="po"></param>
/// <param name="jStateCode"></param>
/// <returns>正常返回prepay_id，jStateCode为空；如果有错误发生，则prepay_id为空，jStateCode有值</returns>
public static string CallUnifiedOrderAPI(ProductOrder po, out WeChatPayData stateCode)
{
string prepayID = string.Empty;
//统一下单API返回的状态码
stateCode = new WeChatPayData();
try
{
WeChatPayData sendPayData;
WeChatPayData recvPayData;
//生成统一下单接口报文
string url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
sendPayData = new WeChatPayData();
sendPayData.SetValue("appid", Config.APPID); //必填
sendPayData.SetValue("mch_id", Config.MCHID); //必填
sendPayData.SetValue("device_info", "WEB");
sendPayData.SetValue("nonce_str", WeChatPayData.MakeNonceStr()); //必填
sendPayData.SetValue("body", po.ProductNames); //必填
sendPayData.SetValue("detail", po.OrderDetails);
sendPayData.SetValue("attach", "订单自定义数据");
sendPayData.SetValue("out_trade_no", po.OrderID); //必填
sendPayData.SetValue("fee_type", "CNY");
sendPayData.SetValue("total_fee", (po.OrderPrice * 100).ToString("F0")); //必填，单位为【分】
sendPayData.SetValue("spbill_create_ip", po.ClientIP); //必填
sendPayData.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));
sendPayData.SetValue("time_expire", DateTime.Now.AddMinutes(Config.WeChatOrderExpire).ToString("yyyyMMddHHmmss")); //最短失效时间间隔必须大于5分钟，可为空，默认2小时，也即prepay_id有效期
sendPayData.SetValue("goods_tag", "商品标记，代金券或立减优惠功能的参数");
sendPayData.SetValue("notify_url", Config.PayNotifyUrl); //必填，微信支付成功后异步通知url
sendPayData.SetValue("trade_type", "JSAPI"); //必填
sendPayData.SetValue("openid", po.Purchaser.OpenID); //trade_type = JSAPI，此参数必传
//生成报文签名
sendPayData.SetValue("sign", sendPayData.MakeSign()); //必填
//生成接口所需的XML报文格式
string sendMsg = sendPayData.ToXml();
var start = DateTime.Now;
Log.Debug("JsApiPay", "UnfiedOrder request" + sendMsg);
//调用微信支付统一下单接口，并获取返回报文
string recvMsg = HttpService.Post(sendMsg, url, false, Config.WeChatAPITimeout);
Log.Debug("JsApiPay", "UnfiedOrder response" + recvMsg);
var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);
Log.Debug("JsApiPay", "UnfiedOrder time cost" + timeCost.ToString());
//recvMsg = "<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg><appid><![CDATA[wxa1ce5cd8d4bc5b3f]]></appid><mch_id><![CDATA[1296478401]]></mch_id><device_info><![CDATA[WEB]]></device_info><nonce_str><![CDATA[vjqH6K12oBv9iEyW]]></nonce_str><sign><![CDATA[42916A4F50AAD1AA1B9A3D222371EBAE]]></sign><result_code><![CDATA[SUCCESS]]></result_code><prepay_id><![CDATA[wx20151223230752785abc1a610183113624]]></prepay_id><trade_type><![CDATA[JSAPI]]></trade_type></xml>";
if (string.IsNullOrEmpty(recvMsg))
{
Log.Error("JsApiPay", "UnfiedOrder接口没有返回数据");
throw new Exception("UnfiedOrder接口没有返回数据");
}
recvPayData = new WeChatPayData();
//根据XML返回报文生成返回报文对象
recvPayData.FromXml(recvMsg);
//校验通信标示
if (recvPayData.IsSet("return_code") && recvPayData.GetValue("return_code").ToString().ToUpper() == "SUCCESS")
{
//当return_code为SUCCESS，才有sign参数返回，校验对方报文签名
if (!recvPayData.CheckSign())
{
stateCode.SetValue("return_code", "FAIL");
stateCode.SetValue("return_msg", "微信支付返回的签名错误，请在安全的网络环境中进行支付！");
Log.Error("CallUnifiedOrderAPI::SIGN签名错误", recvPayData.GetValue("sign").ToString());
}
else
{
//校验业务结果result_code也是SUCCESS，才有prepay_id返回
if (recvPayData.IsSet("result_code") && recvPayData.GetValue("result_code").ToString().ToUpper() == "SUCCESS" && recvPayData.IsSet("prepay_id"))
{
//获取prepay_id
prepayID = recvPayData.GetValue("prepay_id").ToString();
}
else //可能是订单已支付、已关闭、订单号重复等错误原因
{
stateCode.SetValue("result_code", "FAIL");
stateCode.SetValue("err_code", recvPayData.GetValue("err_code").ToString());
stateCode.SetValue("err_code_des", recvPayData.GetValue("err_code_des").ToString());
Log.Error("CallUnifiedOrderAPI", stateCode.ToJson());
}
}
}
else //可能为我方报文sign签名错误或参数格式错误
{
stateCode.SetValue("return_code", "FAIL");
stateCode.SetValue("return_msg", recvPayData.GetValue("return_msg").ToString());
Log.Error("CallUnifiedOrderAPI", stateCode.ToJson());
}
}
catch (Exception ex)
{
Log.Error("WxPayAPI", ex.Message);
throw ex;
}
return(prepayID);
}