@Service

public class ContentcategoryServiceImpl

extends BaseServiceImpl<Contentcategory>

implements ContentcategoryService{

@Autowired

private ContentcategoryMapper contentcategoryMapper;

@Override

publicvoid deleteContentcategoryById(Contentcategory contentcategory) {

       List<Object> deleteIds

deleteIds.add(contentcategory.getId());

//遞迴查詢所有子類目

        findSubNode(deleteIds,contentcategory.getId());

//執行批量刪除

this.deleteByIds(deleteIds);

    }

privatevoid findSubNode(List<Object> deleteIds,Long id) {

       Contentcategory contentcategory = new Contentcategory();

contentcategory.setParentid(id);

//查詢當前分類的子類目

        List<Contentcategory> list= this.contentcategoryMapper.select(contentcategory);

for (Contentcategory contentcategory2 : list) {

//把子類目的id放入集合中

deleteIds.add(contentcategory2.getId());

            findSubNode(deleteIds, contentcategory2.getId());

        }

    }