Question

我有复合主键表

site_Uid - ＆gt;来自站点表
address_Uid - ＆gt;来自地址表

以下JPA类抛出异常

@Entity @IdClass(Site.class)
@Table(name = "site_address")
public class SiteAddress implements Serializable {

    private static final long serialVersionUID = 7237095501517057347L;
    @Id
    @Column(name = "site_uid")
    private int siteUid;
    @Column(name = "address_uid")
    @Id
    private int addressUid;
}

网站类：

@Entity
@Table(name = "site")
public class Site implements Serializable {

    private static final long serialVersionUID = 2059474818667179203L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long siteUid;
    @Column(name = "party_role_uid")
    private int partyRoleUid;
    @Column(name = "site_type_cd")
    private int siteTypeCd;
    @Column(name = "site_name")
    private String siteName;

}

错误：

Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: Unable to find properties (siteTypeCd, siteName, partyRoleUid) in entity annotated with @IdClass:com.enkindle.model.SiteAddress

Answer 1

创建一个包含两个字段的SiteAddressId类：int siteUid和int addressUid。然后在SiteAddress中执行：@IdClass(SiteAddressId.class)。

有关详细信息，请参阅此处：http://www.objectdb.com/java/jpa/entity/id#Composite_Primary_Key_

如何为复合主键创建JPA类

1 个答案: