Java Hibernate:LazyInitializationException:无法初始化代理-无会话
董事会实体和成员实体不是关联映射 董事会实体类Java Hibernate:LazyInitializationException:无法初始化代理-无会话,java,hibernate,jpa,spring-data-jpa,Java,Hibernate,Jpa,Spring Data Jpa,董事会实体和成员实体不是关联映射 董事会实体类 @Entity(name = "BOARD") @Table @SequenceGenerator(name = "BOARD_SEQ_GENERATOR" , sequenceName = "BOARD_SEQ" , initialValue = 1) public class BoardEntity { @Id @GeneratedValue(st
@Entity(name = "BOARD")
@Table
@SequenceGenerator(name = "BOARD_SEQ_GENERATOR"
, sequenceName = "BOARD_SEQ"
, initialValue = 1)
public class BoardEntity {
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE
, generator = "BOARD_SEQ_GENERATOR")
private long idx;
@Lob
private String contents;
private String title;
private long insNo;
@Temporal(TemporalType.TIMESTAMP)
private Date insDate;
private long uptNo;
@Temporal(TemporalType.TIMESTAMP)
private Date uptDate;
@Transient
private String insName;
.....
getter / setter
@Entity
@Table(name = "MEMBER")
@SequenceGenerator(name = "MEMBERIDX_SEQ_GENERATOR"
, sequenceName = "MEMBERIDX_SEQ"
, initialValue = 1)
public class MemberEntity implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE
, generator = "MEMBERIDX_SEQ_GENERATOR")
private long memberIdx;
@Column(nullable = false)
private String id;
@Column(nullable = false)
private String pwd;
@Column(nullable = false)
private String name;
@Column(nullable = false)
private int age;
@Temporal(TemporalType.TIMESTAMP)
@Column(nullable = false)
private Date insDate;
.....
getter / setter
@Entity(name = "BOARD")
@Table
@SequenceGenerator(name = "BOARD_SEQ_GENERATOR"
, sequenceName = "BOARD_SEQ"
, initialValue = 1)
public class BoardEntity {
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE
, generator = "BOARD_SEQ_GENERATOR")
private long idx;
@Lob
private String contents;
private String title;
private long insNo;
@Temporal(TemporalType.TIMESTAMP)
private Date insDate;
private long uptNo;
@Temporal(TemporalType.TIMESTAMP)
private Date uptDate;
@Transient
private String insName;
.....
getter / setter
@Entity
@Table(name = "MEMBER")
@SequenceGenerator(name = "MEMBERIDX_SEQ_GENERATOR"
, sequenceName = "MEMBERIDX_SEQ"
, initialValue = 1)
public class MemberEntity implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE
, generator = "MEMBERIDX_SEQ_GENERATOR")
private long memberIdx;
@Column(nullable = false)
private String id;
@Column(nullable = false)
private String pwd;
@Column(nullable = false)
private String name;
@Column(nullable = false)
private int age;
@Temporal(TemporalType.TIMESTAMP)
@Column(nullable = false)
private Date insDate;
.....
getter / setter
@Repository
public interface MemberRepository extends JpaRepository<MemberEntity, Long> {
@Query("select m from MemberEntity m where m.id=:id")
public MemberEntity getMemberIDbyId(@Param("id") String id);
}
@Service
@Transactional
public class MemberService {
@Autowired private MemberRepository memberRepository;
public void addMember(MemberEntity member) {
memberRepository.save(member);
}
public MemberEntity getMember(Long memberIdx) {
return memberRepository.getOne(memberIdx);
}
}
@Controller
@RequestMapping(value = "/board")
public class BoardController {
@Autowired
private BoardService boardService;
@Autowired
private MemberService memberService;
@RequestMapping(value = "/list", method = RequestMethod.GET)
public String BoardList(HttpServletRequest req, HttpServletResponse resp, Model model) throws Exception {
List<BoardEntity> resutlList = boardService.getBoardList();
//resutlList.forEach(System.out::println);
for (BoardEntity item : resutlList) {
MemberEntity memberEntity = memberService.getMember(item.getInsNo());
item.setInsName(memberEntity.getName());
}
model.addAttribute("boardList", resutlList);
return "board/boardList";
}
}
@Repository
public interface MemberRepository extends JpaRepository<MemberEntity, Long> {
@Query("select m from MemberEntity m where m.id=:id")
public MemberEntity getMemberIDbyId(@Param("id") String id);
}
@Service
@Transactional
public class MemberService {
@Autowired private MemberRepository memberRepository;
public void addMember(MemberEntity member) {
memberRepository.save(member);
}
public MemberEntity getMember(Long memberIdx) {
return memberRepository.getOne(memberIdx);
}
}
@Controller
@RequestMapping(value = "/board")
public class BoardController {
@Autowired
private BoardService boardService;
@Autowired
private MemberService memberService;
@RequestMapping(value = "/list", method = RequestMethod.GET)
public String BoardList(HttpServletRequest req, HttpServletResponse resp, Model model) throws Exception {
List<BoardEntity> resutlList = boardService.getBoardList();
//resutlList.forEach(System.out::println);
for (BoardEntity item : resutlList) {
MemberEntity memberEntity = memberService.getMember(item.getInsNo());
item.setInsName(memberEntity.getName());
}
model.addAttribute("boardList", resutlList);
return "board/boardList";
}
}
@控制器
@请求映射（value=“/board”）
公共类BoardController{
@自动连线
私人寄宿服务；
@自动连线
私人会员服务；
@RequestMapping（value=“/list”，method=RequestMethod.GET）
公共字符串BoardList（HttpServletRequest-req、HttpServletResponse-resp、Model-Model）引发异常{
List resultlist=boardService.getBoardList（）；
//resultlist.forEach（System.out:：println）；
对于（董事会实体项目：ResultList）{
MemberEntity=memberService.getMember（item.GetInNo（））；
item.setInName（memberEntity.getName（））；
}
model.addAttribute（“boardList”，ResultList）；
返回“董事会/董事会名单”；
}
}