java8新特性构建树结构工具类

public class CreateOrgTreeUtil {
    public static List<OrgDTO> CreateTree(int parentId, List<OrgDTO> treeEntityList) {
        return treeEntityList.stream()
                .filter(treeEntity -> treeEntity.getNmParentid()==parentId)
                .peek(treeEntity -> treeEntity.setChildren(CreateTree(treeEntity.getNmId(), treeEntityList)))
                .collect(Collectors.toList());
    }
}