退款bug修复

common/src/main/java/com/jpsoft/bus/modules/pay/service/impl/WechatServiceImpl.java

@@ -121,6 +121,9 @@ public class WechatServiceImpl implements WechatService {
 
         MergeOrderInfo mergeOrderInfo = mergeOrderInfoService.get(orderInfo.getMergeOrderId());
 
+        PaymentInfo paymentInfo = paymentInfoService.get(mergeOrderInfo.getPaymentId());
+
+
         List<OrderInfo> orderInfoList = orderInfoService.findByMergeOrderId(mergeOrderInfo.getId());
         BigDecimal totalDecimal = BigDecimal.ZERO;
         if (orderInfoList.size()>0){
@@ -139,7 +142,7 @@ public class WechatServiceImpl implements WechatService {
         Map<String, String> params = RefundModel.builder()
                 .appid(wxJpsoftConfig.getAppId())
                 .mch_id(wxJpsoftConfig.getMchId())
-                .sub_mch_id(wxJpsoftConfig.getSubMchId())
+                .sub_mch_id(paymentInfo.getSubMchId())
                 .nonce_str(WxPayKit.generateStr())
                 .transaction_id(orderInfo.getTransactionId())
                 .out_trade_no(mergeOrderInfo.getOutOrderNo())