套餐操作和菜品类似，所以就写得水一点了。

新增套餐：

导入SetmealDto，创建setmealdish相关类和接口，只需创建setmealcontroller即可

套餐/菜品分类数据请求：

已解决

菜品数据：

// DishController.java@GetMapping("/list")public R<List<Dish>> list(Dish dish){LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());queryWrapper.eq(Dish::getStatus, 1); // 菜品状态为起售queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);List<Dish> list = dishService.list(queryWrapper);if (list != null) return R.success(list);else return R.error("get list fail...");}

图片上传/下载：

已解决

提交保存：

不仅要保存setmeal表，也要保存setmeal_dish关系表

拓展service方法

// SetMealServiceImpl.java@Override@Transactionalpublic boolean saveWithDish(SetmealDto setmealDto) {// 保存setmeal基本信息super.save(setmealDto);// 保存setmeal_dish关系信息List<SetmealDish> setmealDishes = setmealDto.getSetmealDishes();List<SetmealDish> setmealDishList = setmealDishes.stream().peek((item) ->item.setSetmealId(setmealDto.getId())).collect(Collectors.toList());return setmealDishService.saveBatch(setmealDishList);}

// SetMealController.java@PostMappingpublic R<String> save(@RequestBody SetmealDto setmealDto){if (setmealService.saveWithDish(setmealDto)) return R.success("save success...");else return R.error("save fail...");}

分页查询：

这里需要注意的与在dish分页查询时相同

代码与dish也没什么不同

// SetMealController.java@GetMapping("/page")public R<Page<SetmealDto>> page(int page, int pageSize, String name){Page<SetMeal> pageInfo = new Page<>(page, pageSize);Page<SetmealDto> setmealDtoPage = new Page<>();LambdaQueryWrapper<SetMeal> queryWrapper = new LambdaQueryWrapper<>();queryWrapper.like(name != null, SetMeal::getName, name);queryWrapper.orderByDesc(SetMeal::getUpdateTime);setmealService.page(pageInfo, queryWrapper);BeanUtils.copyProperties(pageInfo, setmealDtoPage, "records");List<SetMeal> records = pageInfo.getRecords();List<SetmealDto> setmealDtoList = records.stream().map((item) -> {SetmealDto setmealDto = new SetmealDto();BeanUtils.copyProperties(item, setmealDto);Category category = categoryService.getCategoryId(item.getId());setmealDto.setCategoryName(category.getName());return setmealDto;}).collect(Collectors.toList());setmealDtoPage.setRecords(setmealDtoList);return R.success(setmealDtoPage);}

删除套餐：

删除同样是多表操作，需要扩展service方法

// SetMealServiceImpl.java@Override@Transactionalpublic boolean removeWithDish(List<Long> ids) {// 判断是否正在售出，是则抛出业务异常LambdaQueryWrapper<SetMeal> queryWrapper = new LambdaQueryWrapper<>();queryWrapper.in(SetMeal::getId, ids);queryWrapper.eq(SetMeal::getStatus, 1); // 正在售卖int count = this.count(queryWrapper);if (count > 0) throw new CustomException("this set meal is selling");// 删除setmeal表中数据super.removeByIds(ids);// 删除setmeal_dish表中数据LambdaQueryWrapper<SetmealDish> setmealDishQueryWrapper = new LambdaQueryWrapper<>();setmealDishQueryWrapper.in(SetmealDish::getSetmealId, ids);return setmealDishService.remove(setmealDishQueryWrapper);}

// SetMealController.java@DeleteMappingpublic R<String> delete(@RequestParam List<Long> ids){if (setmealService.removeWithDish(ids)) return R.success("delete success...");else return R.error("delete fail...");}

修改状态：

// SetMealController.java@PostMapping("/status/{status}")public R<String> updateStatus(@PathVariable String status, @RequestParam List<Long> ids){UpdateWrapper<SetMeal> updateWrapper = new UpdateWrapper<>();updateWrapper.in("id", ids).set("status", status);if (setmealService.update(updateWrapper)) return R.success("update status success...");else return R.error("update status fail...");}

修改时回显数据：

与dish相同，多表操作

// SetMealServiceImpl.java@Overridepublic SetmealDto getByIdWithDish(Long id) {SetmealDto setmealDto = new SetmealDto();SetMeal setMeal = super.getById(id);LambdaQueryWrapper<SetmealDish> queryWrapper = new LambdaQueryWrapper<>();queryWrapper.eq(SetmealDish::getSetmealId, setMeal.getId());List<SetmealDish> dishes = setmealDishService.list(queryWrapper);BeanUtils.copyProperties(setMeal, setmealDto);setmealDto.setSetmealDishes(dishes);return setmealDto;}

// SetMealController.java@GetMapping("/{id}")public R<SetMeal> revealInfo(@PathVariable Long id){SetMeal setMeal = setmealService.getByIdWithDish(id);if (setMeal != null) return R.success(setMeal);else return R.error("reveal info fail...");}