谷粒商城day55-商品服务-API-平台属性-规格参数列表

1.需求分析

可以看到打开规格参数界面时，与进入界面后点击某分类时，分别有两个几乎同样的请求，不同的只是两个参数不同，

刚进界面的是0点击分类时是该分类的ID,下面就要完成查询功能

2. 查询功能实现

创建AttrResponseVo,查看接口文档可以看到返回vo相比较与原生PO多了俩属性

@Data
public class AttrResponseVo extends AttrEntity {

    private String catelogName;
    private String groupName;
}

service层代码

    @Override
    public PageUtils baseAttrList(Map<String, Object> params, Long catelogId) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>();

        if(catelogId != 0){
            queryWrapper.eq("catelog_id", catelogId);
        }

        String key = (String) params.get("key");
        if(StringUtils.isNotEmpty(key)){
            queryWrapper.and((obj) ->{
                obj.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );

        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrResponseVo> attrResponseVos = records.stream().map((attrEntity) -> {

            AttrResponseVo attrResponseVo = new AttrResponseVo();
            BeanUtils.copyProperties(attrEntity, attrResponseVo);
            CategoryEntity categoryEntity = categoryService.getById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrResponseVo.setCatelogName(categoryEntity.getName());
            }

            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = attrAttrgroupRelationService.
                    getOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
            if (attrAttrgroupRelationEntity != null) {
                AttrGroupEntity attrGroupEntity = attrGroupService.getById(attrAttrgroupRelationEntity.getAttrGroupId());
                attrResponseVo.setGroupName(attrGroupEntity.getAttrGroupName());
            }

            return attrResponseVo;
        }).collect(Collectors.toList());

        pageUtils.setList(attrResponseVos);
        return pageUtils;
    }

测试查询效果