苍岛外卖 实现添加新菜品及其口味的界面

        DishController

package com.sky.controller.admin;

import com.sky.dto.DishDTO;
import com.sky.result.Result;
import com.sky.service.DishService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * 菜品管理
 *
 */
@RestController
@RequestMapping("/admin/dish")
@Api(tags = "菜品相关接口")
@Slf4j
public class DishController {

    @Autowired
    private 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);
        return Result.success();
    }
}

        DishService

package com.sky.service;

import com.sky.dto.DishDTO;

public interface DishService {

    /**
     * 新增菜品和对应的口味
     *
     * @param dishDTO
     */
    public void saveWithFlavor(DishDTO dishDTO);
}

package com.sky.service.impl;

import com.sky.dto.DishDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.function.Consumer;

@Service
@Slf4j
public class DishServiceImp implements DishService {
    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private DishFlavorMapper dishFlavorMapper;

    /**
     * 新增菜品和对应的口味
     *
     * @param dishDTO
     */
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        // 将DTO转换为对应的实体对象
        BeanUtils.copyProperties(dishDTO, dish);

        // 向菜品表中插入1条数据
        dishMapper.insert(dish);

        // 获取insert语句生成的主键值
        Long dishId = dish.getId();

        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && !flavors.isEmpty()) {
            flavors.forEach(new Consumer<DishFlavor>() {
                @Override
                public void accept(DishFlavor dishFlavor) {
                    dishFlavor.setDishId(dishId);
                }
            });
            // 向口味表中插入n条数据
            dishFlavorMapper.insertBatch(flavors);
        }
    }

}

        DishMapper

package com.sky.mapper;

import com.sky.annotation.AutoFill;
import com.sky.entity.Dish;
import com.sky.enumeration.OperationType;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface DishMapper {

    /**
     * 查询对应分类关联的菜品数量
     *
     * @param id
     * @return
     */
    Integer countDishByCategory(Long id);

    /**
     * 新增菜品和对应口味
     *
     * @param dish
     */
    @AutoFill(value = OperationType.INSERT)
    void insert(Dish dish);
}

        XML文件

<?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">
    <select id="countDishByCategory" resultType="Integer">
        select count(*)
        from dish
        where category_id = #{id}
    </select>

    <insert id="insert" useGeneratedKeys="true" keyProperty="id">
        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

package com.sky.mapper;

import com.sky.entity.DishFlavor;
import org.apache.ibatis.annotations.Mapper;

import java.util.List;

@Mapper
public interface DishFlavorMapper {

    /**
     * 批量插入口味数据
     *
     * @param flavors
     */
    void insertBatch(List<DishFlavor> flavors);
}

         XML配置文件

<?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="dishFlavor" separator=",">
            (#{dishFlavor.dishId},#{dishFlavor.name},#{dishFlavor.value})
        </foreach>
    </insert>
</mapper>