Java 没有继承id字段的JPA内部字段

大家好

我们通常在每个名为CREATED_BY、LAST_UPDATED_BY、CREATION_DATE、LAST_UPDATED_DATE的表中放置4个字段，因此我想为什么不将其放在单个类BaseDo中，然后将其继承到类EmployeeDo中呢。问题是如果我用@Entity注释这个BaseDo，我必须放一个我不想要的@Id字段。有没有办法做到这一点

@Entity
@Inheritance(strategy=InheritanceType.TABLE_PER_CLASS)
public class BaseDo implements Serializable {
    private static final long serialVersionUID = 6685603264139140757L;
    @Column(name="CREATED_BY" , nullable =false )
    private String createdBy;
    @Column(name="LAST_UPDATED_BY", nullable =false )
    private String lastUpdatedBy;
    @Column(name="CREATION_DATE", nullable =false )
    private Date creationDate;
    @Column(name="LAST_UPDATED_DATE", nullable =false )
    private Date lastUpdationDate;
}

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非常感谢

您应该使用@MappedSuperclass

请检查一下

@Entity
@Table(name="EMPLOYEE")
public class EmployeeDo extends BaseDo implements Serializable {

    private static final long serialVersionUID = 4465521188079217243L;
    @Id
    @Column(name="EMPLOYEE_ID" )
    private String employeeId ;
}