业务规则:
接口设计(共涉及到4个接口):
setmeal表为套餐表,用于存储套餐的信息。具体表结构如下:
字段名 | 数据类型 | 说明 | 备注 |
---|---|---|---|
id | bigint | 主键 | 自增 |
name | varchar(32) | 套餐名称 | 唯一 |
category_id | bigint | 分类id | 逻辑外键 |
price | decimal(10,2) | 套餐价格 | |
image | varchar(255) | 图片路径 | |
description | varchar(255) | 套餐描述 | |
status | int | 售卖状态 | 1起售 0停售 |
create_time | datetime | 创建时间 | |
update_time | datetime | 最后修改时间 | |
create_user | bigint | 创建人id | |
update_user | bigint | 最后修改人id |
setmeal_dish表为套餐菜品关系表,用于存储套餐和菜品的关联关系。具体表结构如下:
字段名 | 数据类型 | 说明 | 备注 |
---|---|---|---|
id | bigint | 主键 | 自增 |
setmeal_id | bigint | 套餐id | 逻辑外键 |
dish_id | bigint | 菜品id | 逻辑外键 |
name | varchar(32) | 菜品名称 | 冗余字段 |
price | decimal(10,2) | 菜品单价 | 冗余字段 |
copies | int | 菜品份数 |
/**
* 根据分类id查询菜品
* @param categoryId
* @return
*/
@GetMapping("/list")
@ApiOperation("根据分类id查询菜品")
public Result<List<Dish>> list(Long categoryId){
List<Dish> list = dishService.list(categoryId);
return Result.success(list);
}
/**
* 根据分类id查询菜品
* @param categoryId
* @return
*/
List<Dish> list(Long categoryId);
/**
* 根据分类id查询菜品
* @param categoryId
* @return
*/
public List<Dish> list(Long categoryId) {
Dish dish = Dish.builder()
.categoryId(categoryId)
.status(StatusConstant.ENABLE)
.build();
return dishMapper.list(dish);
}
/**
* 动态条件查询菜品
* @param dish
* @return
*/
List<Dish> list(Dish dish);
<select id="list" resultType="Dish" parameterType="Dish">
select * from dish
<where>
<if test="name != null">
and name like concat('%',#{name},'%')
if>
<if test="categoryId != null">
and category_id = #{categoryId}
if>
<if test="status != null">
and status = #{status}
if>
where>
order by create_time desc
select>
/**
* 套餐管理
*/
@RestController
@RequestMapping("/admin/setmeal")
@Api(tags = "套餐相关接口")
@Slf4j
public class SetmealController {
@Autowired
private SetmealService setmealService;
/**
* 新增套餐
* @param setmealDTO
* @return
*/
@PostMapping
@ApiOperation("新增套餐")
public Result save(@RequestBody SetmealDTO setmealDTO) {
setmealService.saveWithDish(setmealDTO);
return Result.success();
}
}
public interface SetmealService {
/**
* 新增套餐,同时需要保存套餐和菜品的关联关系
* @param setmealDTO
*/
void saveWithDish(SetmealDTO setmealDTO);
}
/**
* 套餐业务实现
*/
@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {
@Autowired
private SetmealMapper setmealMapper;
@Autowired
private SetmealDishMapper setmealDishMapper;
@Autowired
private DishMapper dishMapper;
/**
* 新增套餐,同时需要保存套餐和菜品的关联关系
* @param setmealDTO
*/
@Transactional
public void saveWithDish(SetmealDTO setmealDTO) {
Setmeal setmeal = new Setmeal();
BeanUtils.copyProperties(setmealDTO, setmeal);
//向套餐表插入数据
setmealMapper.insert(setmeal);
//获取生成的套餐id
Long setmealId = setmeal.getId();
List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
setmealDishes.forEach(setmealDish -> {
setmealDish.setSetmealId(setmealId);
});
//保存套餐和菜品的关联关系
setmealDishMapper.insertBatch(setmealDishes);
}
}
/**
* 新增套餐
* @param setmeal
*/
@AutoFill(OperationType.INSERT)
void insert(Setmeal setmeal);
<insert id="insert" parameterType="Setmeal" useGeneratedKeys="true" keyProperty="id">
insert into setmeal
(category_id, name, price, status, description, image, create_time, update_time, create_user, update_user)
values (#{categoryId}, #{name}, #{price}, #{status}, #{description}, #{image}, #{createTime}, #{updateTime},
#{createUser}, #{updateUser})
insert>
/**
* 批量保存套餐和菜品的关联关系
* @param setmealDishes
*/
void insertBatch(List<SetmealDish> setmealDishes);
<insert id="insertBatch" parameterType="list">
insert into setmeal_dish
(setmeal_id,dish_id,name,price,copies)
values
<foreach collection="setmealDishes" item="sd" separator=",">
(#{sd.setmealId},#{sd.dishId},#{sd.name},#{sd.price},#{sd.copies})
foreach>
insert>
业务规则:
/**
* 分页查询
* @param setmealPageQueryDTO
* @return
*/
@GetMapping("/page")
@ApiOperation("分页查询")
public Result<PageResult> page(SetmealPageQueryDTO setmealPageQueryDTO) {
PageResult pageResult = setmealService.pageQuery(setmealPageQueryDTO);
return Result.success(pageResult);
}
/**
* 分页查询
* @param setmealPageQueryDTO
* @return
*/
PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO);
/**
* 分页查询
* @param setmealPageQueryDTO
* @return
*/
public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
int pageNum = setmealPageQueryDTO.getPage();
int pageSize = setmealPageQueryDTO.getPageSize();
PageHelper.startPage(pageNum, pageSize);
Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);
return new PageResult(page.getTotal(), page.getResult());
}
/**
* 分页查询
* @param setmealPageQueryDTO
* @return
*/
Page<SetmealVO> pageQuery(SetmealPageQueryDTO setmealPageQueryDTO);
<select id="pageQuery" resultType="com.sky.vo.SetmealVO">
select
s.*,c.name categoryName
from
setmeal s
left join
category c
on
s.category_id = c.id
<where>
<if test="name != null">
and s.name like concat('%',#{name},'%')
if>
<if test="status != null">
and s.status = #{status}
if>
<if test="categoryId != null">
and s.category_id = #{categoryId}
if>
where>
order by s.create_time desc
select>
业务规则:
/**
* 批量删除套餐
* @param ids
* @return
*/
@DeleteMapping
@ApiOperation("批量删除套餐")
public Result delete(@RequestParam List<Long> ids){
setmealService.deleteBatch(ids);
return Result.success();
}
/**
* 批量删除套餐
* @param ids
*/
void deleteBatch(List<Long> ids);
/**
* 批量删除套餐
* @param ids
*/
@Transactional
public void deleteBatch(List<Long> ids) {
ids.forEach(id -> {
Setmeal setmeal = setmealMapper.getById(id);
if(StatusConstant.ENABLE == setmeal.getStatus()){
//起售中的套餐不能删除
throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
}
});
ids.forEach(setmealId -> {
//删除套餐表中的数据
setmealMapper.deleteById(setmealId);
//删除套餐菜品关系表中的数据
setmealDishMapper.deleteBySetmealId(setmealId);
});
}
/**
* 根据id查询套餐
* @param id
* @return
*/
@Select("select * from setmeal where id = #{id}")
Setmeal getById(Long id);
/**
* 根据id删除套餐
* @param setmealId
*/
@Delete("delete from setmeal where id = #{id}")
void deleteById(Long setmealId);
/**
* 根据套餐id删除套餐和菜品的关联关系
* @param setmealId
*/
@Delete("delete from setmeal_dish where setmeal_id = #{setmealId}")
void deleteBySetmealId(Long setmealId);
/**
* 根据id查询套餐,用于修改页面回显数据
*
* @param id
* @return
*/
@GetMapping("/{id}")
@ApiOperation("根据id查询套餐")
public Result<SetmealVO> getById(@PathVariable Long id) {
SetmealVO setmealVO = setmealService.getByIdWithDish(id);
return Result.success(setmealVO);
}
/**
* 修改套餐
*
* @param setmealDTO
* @return
*/
@PutMapping
@ApiOperation("修改套餐")
public Result update(@RequestBody SetmealDTO setmealDTO) {
setmealService.update(setmealDTO);
return Result.success();
}
/**
* 根据id查询套餐和关联的菜品数据
* @param id
* @return
*/
SetmealVO getByIdWithDish(Long id);
/**
* 修改套餐
* @param setmealDTO
*/
void update(SetmealDTO setmealDTO);
/**
* 根据id查询套餐和套餐菜品关系
*
* @param id
* @return
*/
public SetmealVO getByIdWithDish(Long id) {
Setmeal setmeal = setmealMapper.getById(id);
List<SetmealDish> setmealDishes = setmealDishMapper.getBySetmealId(id);
SetmealVO setmealVO = new SetmealVO();
BeanUtils.copyProperties(setmeal, setmealVO);
setmealVO.setSetmealDishes(setmealDishes);
return setmealVO;
}
/**
* 修改套餐
*
* @param setmealDTO
*/
@Transactional
public void update(SetmealDTO setmealDTO) {
Setmeal setmeal = new Setmeal();
BeanUtils.copyProperties(setmealDTO, setmeal);
//1、修改套餐表,执行update
setmealMapper.update(setmeal);
//套餐id
Long setmealId = setmealDTO.getId();
//2、删除套餐和菜品的关联关系,操作setmeal_dish表,执行delete
setmealDishMapper.deleteBySetmealId(setmealId);
List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
setmealDishes.forEach(setmealDish -> {
setmealDish.setSetmealId(setmealId);
});
//3、重新插入套餐和菜品的关联关系,操作setmeal_dish表,执行insert
setmealDishMapper.insertBatch(setmealDishes);
}
/**
* 根据套餐id查询套餐和菜品的关联关系
* @param setmealId
* @return
*/
@Select("select * from setmeal_dish where setmeal_id = #{setmealId}")
List<SetmealDish> getBySetmealId(Long setmealId);
业务规则:
/**
* 套餐起售停售
* @param status
* @param id
* @return
*/
@PostMapping("/status/{status}")
@ApiOperation("套餐起售停售")
public Result startOrStop(@PathVariable Integer status, Long id) {
setmealService.startOrStop(status, id);
return Result.success();
}
/**
* 套餐起售、停售
* @param status
* @param id
*/
void startOrStop(Integer status, Long id);
/**
* 套餐起售、停售
* @param status
* @param id
*/
public void startOrStop(Integer status, Long id) {
//起售套餐时,判断套餐内是否有停售菜品,有停售菜品提示"套餐内包含未启售菜品,无法启售"
if(status == StatusConstant.ENABLE){
//select a.* from dish a left join setmeal_dish b on a.id = b.dish_id where b.setmeal_id = ?
List<Dish> dishList = dishMapper.getBySetmealId(id);
if(dishList != null && dishList.size() > 0){
dishList.forEach(dish -> {
if(StatusConstant.DISABLE == dish.getStatus()){
throw new SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
}
});
}
}
Setmeal setmeal = Setmeal.builder()
.id(id)
.status(status)
.build();
setmealMapper.update(setmeal);
}
/**
* 根据套餐id查询菜品
* @param setmealId
* @return
*/
@Select("select a.* from dish a left join setmeal_dish b on a.id = b.dish_id where b.setmeal_id = #{setmealId}")
List<Dish> getBySetmealId(Long setmealId);
后记
美好的一天,到此结束,下次继续努力!欲知后续,请看下回分解,写作不易,感谢大家的支持!!