千峰商城-springboot项目搭建-63-分类商品推荐业务层和控制层实现

1.业务层实现：

CategoryService ：

public interface CategoryService {
    public ResultVO listCategories();

    public ResultVO listFirstLevelCategories();
}

 

CategoryServiceImpl：

@Service
public class CategoryServiceImpl implements CategoryService {

    @Autowired
    private CategoryMapper categoryMapper;

    //查询分类列表（包含三个级别的分类）
    public ResultVO listCategories() {
        List<CategoryVO> categoryVOS = categoryMapper.selectAllCategories();
        ResultVO resultVO = new ResultVO(ResStatus.OK, "success", categoryVOS);
        return resultVO;
    }

    //查询所有一级分类，同时查询当前一级分类下销量最高的6个商品
    public ResultVO listFirstLevelCategories() {
        List<CategoryVO> categoryVOS = categoryMapper.selectFirstLevelCategories();

        ResultVO resultVO = new ResultVO(ResStatus.OK, "success", categoryVOS);
        return resultVO;
    }
}

 

2.控制层实现：

@RestController
@CrossOrigin
@RequestMapping("/index")
@Api(value = "提供首页数据显示所需的接口",tags = "首页管理")
public class IndexController {

    @Autowired
    private IndexImgService indexImgService;
    @Autowired
    private CategoryService categoryService;
    @Autowired
    private ProductService productService;

    @GetMapping("/indeximg")
    @ApiOperation("首页轮播图接口")
    public ResultVO listIndexImgs(){
        return indexImgService.listIndexImgs();
    }


    @GetMapping("/category-list")
    @ApiOperation("商品分类查询接口")
    public ResultVO listCategory(){
        return categoryService.listCategories();
    }

    @GetMapping("/list-recommends")
    @ApiOperation("查询新品商品的接口")
    public ResultVO listRecommendProducts(){
        return productService.listRecommendProducts();
    }

    @GetMapping("/category-recommends")
    @ApiOperation("查询分类推荐商品的接口")
    public ResultVO listRecommendProductsByCategory(){
        return categoryService.listFirstLevelCategories();
    }
}