java - Hibernate JPA ManyToOne复合键

我正在尝试设置我的实体以允许pks。我的数据库包含两个字段，

Dealer_detail_id pk
user_detail_id pk

两者都在对应表中的id上联接。

到目前为止，我已经尝试过了，但没有成功。

@Embeddable
public class DealerUserPk implements Serializable {

    private Integer dealerDetail;
    private Integer userDetail;

DealerUser

@Embeddable
@Table(name = "dealer_user", schema = "account")
public class DealerUser implements Serializable {

    @EmbeddedId
    private DealerUserPk id;

    @Id
    @ManyToOne
    @JoinColumn(name = "dealer_detail_id", referencedColumnName = "id")
    private DealerDetail dealerDetail;

    @Id
    @ManyToOne
    @JoinColumn(name = "user_detail_id", referencedColumnName = "id")
    private UserDetail userDetail;

经销商详情

@Entity
@Table(name = "dealer_detail", schema = "account")
public class DealerDetail implements Serializable {

    @Id
    private Integer id;

用户详细信息

@Entity
@Table(name = "user_detail", schema = "account")
public class UserDetail implements Serializable {

    @Id
    private Integer id;

有人可以发现我在做什么吗？

最佳答案

这是对的:

@Embeddable
public class DealerUserPk implements Serializable {

    private Integer dealerDetail;
    private Integer userDetail;

但是您的DealerUser带有可嵌入的注释，它应该是@Entity
因为您正在使用@Table批注。

需要如下添加MapsId

 @Entity
 @Table(name = "dealer_user", schema = "account")
  public class DealerUser implements Serializable {

@EmbeddedId
private DealerUserPk id;

@MapsId("dealerDetail")
@ManyToOne
@JoinColumn(name = "dealer_detail_id", referencedColumnName = "id")
private DealerDetail dealerDetail;

@Id
@MapsId("userDetail")
@JoinColumn(name = "user_detail_id", referencedColumnName = "id")
private UserDetail userDetail;

尝试一下。

关于java - Hibernate JPA ManyToOne复合键，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/22002739/