spring-data-jpa只查询实体部分字段

@Entity
@Table(name = "article_online")
public class ArticleOnlineEntity implements Serializable {
private static final long serialVersionUID = 1L;

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;

private Integer app_type;

private Integer article_from_id;

public ArticleOnlineEntity() {}

public ArticleOnlineEntity(Integer app_type， private Integer article_from_id)
{
省略xxx
}
省略set、getxxx
}

@Transactional
public interface ArticleOnlineDao extends CrudRepository<ArticleOnlineEntity, Integer> {
@Query(
"SELECT new ArticleOnlineEntity(ao.type,ao.article_from_id) FROM ArticleOnlineEntity ao")
public List<ArticleOnlineEntity> findArticleIdByOnline();
}