Hibernate外键变为null

Question

我在hibernate中使用一对一映射我有两个实体RegisterPartner而另一个Userdetails.userdetails正在使用user_id作为主键，并且它在{{中用作外键1}}但是当我保存实体时它正确保存，除了外键变为RegisterPartner

null

保存代码

@Entity
@Table(name="tbl_login")
 public class Userdetails implements Serializable{

@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@Column(name="user_id")
private int user_id;
@Column(name="username")
private String username;
@Column(name="password")
private String password;

@OneToOne(mappedBy = "userdetail", cascade = CascadeType.ALL)  
private RegisterPartner registerpartner ;


public Userdetails(){

}
}   

@Entity
@Table(name="tbl_partner")
public class RegisterPartner implements  Serializable , Comparable<RegisterPartner>{
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@Column(name="register_id")
private int register_id;

@Column(name="agency_name")
private String agencyname;

@Column(name="agency_type")
private int agencytype;

@OneToOne
@PrimaryKeyJoinColumn(name = "user_id", referencedColumnName = "user_id")
private Userdetails userdetail;

public RegisterPartner(){}

 }

不了解正在发生的事情。

Answer 1

您不应该使用@PrimaryKeyJoinColumn，这用于表示主键也是外键。您应该使用@JoinColumn。