1.代客下单 商品数量减少增加打印退单票据

src/main/java/com/chaozhanggui/system/cashierservice/mybatis/MpPrintMachineMapper.java

@@ -0,0 +1,8 @@
+package com.chaozhanggui.system.cashierservice.mybatis;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.chaozhanggui.system.cashierservice.entity.TbCashierCart;
+import com.chaozhanggui.system.cashierservice.entity.TbPrintMachine;
+
+public interface MpPrintMachineMapper extends BaseMapper<TbPrintMachine> {
+}