public class User extends Page{
    /**
     * 
     */
    private static final long serialVersionUID = -437313584668818505L;
    @Id
    @Column
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Integer id;
    @Column
    private String name;
    @Column
    private String sex;
    @Column
    private Timestamp birthday;
    @Column
    private String location;
    @Column
    private Integer phone;
    @Column
    private String note;
    @Column
    private Timestamp createtime;
    @Column
    private String delflg;
    @Column
    private String acount;
    @Column
    private String password;
    @ManyToMany
    @JoinTable(
            name="user_role",
            joinColumns=@JoinColumn(name="user_id"),
            inverseJoinColumns=@JoinColumn(name="role_id"))    
    private List<Role> roles;

public class Role extends Page{
    /**
     * 
     */
    private static final long serialVersionUID = -7093371292207481848L;
    @Id
    @Column
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Integer id;
    @Column
    private String name;
    @Column
    private Timestamp createtime;
    @Column
    private String delflg;
    @ManyToMany(mappedBy="roles",fetch=FetchType.EAGER)
    private List<User> users;
    
    @ManyToMany
    @JoinTable(
            name="role_perm",
            joinColumns=@JoinColumn(name="role_id"),
            inverseJoinColumns=@JoinColumn(name="perm_id"))
    private List<Perm> perms;

@Transactional
@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserDao userDao;
    
    @Override
    public Serializable add(User user) {
        
        return userDao.save(user);
    }

    @Override
    public List<User> findByPage(User user) {
        return userDao.findByPage("from User", user.getPage(),user.getRows());
    }
    

}