具有共享主键的两个表之间的OneToOne

如果您使用hibernate模式，也可以使用

public class Validation {    private Long validationId;    private User user;    @Id    @GeneratedValue(generator="SharedPrimaryKeyGenerator")    @GenericGenerator(name="SharedPrimaryKeyGenerator",strategy="foreign",parameters =  @Parameter(name="property", value="user"))    @Column(name = "VALIDATION_ID", unique = true, nullable = false)    public Long getValidationId(){        return validationId;    }    @oneToOne    @PrimaryKeyJoinColumn    public User getUser() {        return user;    }}

Hibernate将确保Validation的ID与User实体集的ID相同。