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苍穹外卖--新增菜品

news 来源：原创 2024/5/9 18:24:00

设计DTO类

在sky-pojo模块中```java
@Data
public class DishDTO implements Serializable {private Long id;//菜品名称private String name;//菜品分类idprivate Long categoryId;//菜品价格private BigDecimal price;//图片private String image;//描述信息private String description;//0 停售 1 起售private Integer status;//口味private List<DishFlavor> flavors = new ArrayList<>();
}

Controller层

进入到sky-server模块

package com.sky.controller.admin;
/*** 菜品管理*/
@RestController
@RequestMapping("/admin/dish")
@Api(tags = "菜品相关接口")
@Slf4j
public class DishController {@Autowiredprivate DishService dishService;/*** 新增菜品** @param dishDTO* @return*/@PostMapping@ApiOperation("新增菜品")public Result save(@RequestBody DishDTO dishDTO) {log.info("新增菜品：{}", dishDTO);dishService.saveWithFlavor(dishDTO);//后绪步骤开发return Result.success();}
}

Service层

 @Transactional//事务管理@Overridepublic void add(DishDTO dishDTO) {Dish dish= new Dish();BeanUtils.copyProperties(dishDTO,dish);dishMapper.addDish(dish);Long id = dish.getId();//主键返回
//        for (DishFlavor flavor : dishDTO.getFlavors()) {
//            flavor.setDishId(id);
//        }List<DishFlavor> flavors = dishDTO.getFlavors();if (flavors != null && flavors.size() > 0) {flavors.forEach(dishFlavor -> {dishFlavor.setDishId(id);});//向口味表插入n条数据dishFlavorMapper.addFlover(flavors);//后绪步骤实现}//        List<DishFlavor> dishFlavors=dishDTO.getFlavors();
//        dishFlavorMapper.addFlover(dishFlavors);}

Mapper层

  @AutoFill(value = OperationType.INSERT)void insert(Dish dish);

在/resources/mapper中创建DishMapper.xml```xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.sky.mapper.DishMapper"><insert id="insert" useGeneratedKeys="true" keyProperty="id">//主键返回insert into dish (name, category_id, price, image, description, create_time, update_time, create_user,update_user, status)values (#{name}, #{categoryId}, #{price}, #{image}, #{description}, #{createTime}, #{updateTime}, #{createUser}, #{updateUser}, #{status})</insert>
</mapper>


DishFlavorMapper.java```java
package com.sky.mapper;import com.sky.entity.DishFlavor;
import java.util.List;@Mapper
public interface DishFlavorMapper {/*** 批量插入口味数据* @param flavors*/void insertBatch(List<DishFlavor> flavors);}

在/resources/mapper中创建DishFlavorMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.sky.mapper.DishFlavorMapper"><insert id="insertBatch">insert into dish_flavor (dish_id, name, value) VALUES<foreach collection="flavors" item="df" separator=",">(#{df.dishId},#{df.name},#{df.value})</foreach></insert>
</mapper>