fix 余额支付失败返还余额

mec-biz/src/main/java/com/ym/mec/biz/service/impl/StudentRegistrationServiceImpl.java

@@ -439,6 +439,9 @@ public class StudentRegistrationServiceImpl extends BaseServiceImpl<Long, Studen
         //关闭老订单
         oldOrder.setStatus(DealStatusEnum.CLOSE);
         studentPaymentOrderService.update(oldOrder);
+        if(oldOrder.getBalancePaymentAmount() != null && oldOrder.getBalancePaymentAmount().compareTo(BigDecimal.ZERO) >0 ){
+            sysUserCashAccountService.updateBalance(oldOrder.getUserId(), oldOrder.getBalancePaymentAmount(),PlatformCashAccountDetailTypeEnum.REFUNDS,"关闭订单");
+        }
         Date date = new Date();
         StudentPaymentOrder studentPaymentOrder = new StudentPaymentOrder();
         studentPaymentOrder.setUserId(userId);