https://blog.csdn.net/lw5885799/article/details/81103183
import org.springframework.stereotype.Repository;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.transaction.Transactional;
@Repository
public class EntityManagerDAO {
@PersistenceContext
private EntityManager entityManager;
@Transactional
public List<BackstageUserListDTO自定義VO> listUser(){
String sql = "select a.create_time createTime," +
"a.mobilephone phoneNum," +
"a.email email,a.uid uid," +
"a.enabled enabled," +