modified:   main/java/com/flyhz/shop/dto/ProductDto.java
	modified:   main/java/com/flyhz/shop/service/ShoppingCartService.java
	modified:   main/java/com/flyhz/shop/service/impl/ProductServiceImpl.java
	modified:   main/java/com/flyhz/shop/service/impl/ShoopingCartServiceImpl.java
	modified:   main/java/com/flyhz/shop/web/controller/UserController.java
	modified:   main/resources/mybatis/sqlmap/CartItemMapper.xml