补充添加接口描述

src/main/java/com/ycwl/basic/mapper/pc/OrderMapper.java

@@ -22,6 +22,11 @@ public interface OrderMapper {
 //    int deleteById(Long id);
     int update(OrderAddOrUpdateReq order);
 
+    /**
+     * 添加订单明细
+     * @param orderItems
+     * @return
+     */
     int addOrderItems(List<OrderItemEntity> orderItems);
 
 }