删除商品类目

CategoryController

    /**
     * 删除商品类目
     * @param categoryId 商品类目标识
     * @return
     */
    @ApiOperation("删除商品类目")
    @DeleteMapping("{categoryId}")
    @PreAuthorize("hasAuthority('prod:category:delete')")
    public Result<String> removeCategory(@PathVariable Long categoryId) {
        Boolean removed = categoryService.removeCategoryById(categoryId);
        return Result.handle(removed);
    }

CategoryServiceImpl

/**
     * 删除商品类目
     *  需求：如果一级类目包含子类目，则不可删除
     * @param categoryId
     * @return
     */
    @Override
    @Caching(evict = {
            @CacheEvict(key = ProductConstants.ALL_CATEGORY_LIST_KEY),
            @CacheEvict(key = ProductConstants.FIRST_CATEGORY_LIST_KEY),
            @CacheEvict(key = ProductConstants.WX_FIRST_CATEGORY)
    })
    public Boolean removeCategoryById(Long categoryId) {
        // 根据类目标识查询子类目集合
        List<Category> childCategoryList = categoryMapper.selectList(new LambdaQueryWrapper<Category>()
                .eq(Category::getParentId, categoryId)
        );
        // 判断是否有值
        if (CollectionUtil.isNotEmpty(childCategoryList) && childCategoryList.size() != 0) {
            // 说明：当前类目包含子类目，不可删除
            throw new BusinessException("当前类目包含子类目，不可删除");
        }
        // 说明：当前类目不包含子类目
        return categoryMapper.deleteById(categoryId)>0;
    }