Question

我的程序有两个实体：

@Entity
public class User implements Serializable {

    @ManyToMany(cascade={CascadeType.ALL},fetch = FetchType.EAGER,
                targetEntity = Ip.class,mappedBy = "user")
    @Cascade(org.hibernate.annotations.CascadeType.ALL)
    @Fetch(value = FetchMode.SUBSELECT)    
    private Collection<Ip> allowedIp;
    ...
}

@Entity
public class Ip implements Serializable {
    @Column(unique=false,updatable=true,insertable=true,nullable=true,
            length=255,scale=0,precision=0)
    @Id
    private String value;
    @ManyToMany(targetEntity = User.class)
    private Collection<User> user;
    ...
}

我尝试使用Spring JPA存储库来坚持新用户，如下所示：

@Transactional (readOnly = false)
@Repository
public interface UserRepository extends JpaRepository<User, String> {
}

List<Ip> allowedIp = new ArrayList<Ip>();
allowedIp.add(ipRepository.findOne("*"));

User user = new User();
user.setAllowedIp(allowedIp);

userRepository.save(user);

问题是Ip（*值）永远不会持久化，尽管我添加了JPA级联注释，还有hibernate级联注释。知道为什么会出现这个问题吗？

Answer 1

您将@manytomany标记为由IP类（mappedBy注释）管理。您必须将用户添加到IP.user集合以保持关系。

for (Ip ip : allowedIp) ip.getUser().add(user)

Hibernate不会级联实体保存

1 个答案: