Question

我使用exstra字段为多对多人实施了此解决方案：Many to Many Hibernate Mapping for additional property in the join table

我的代码：

@Entity
public class User {


    @OneToMany(fetch = FetchType.LAZY, mappedBy = "pk.user", cascade = CascadeType.ALL)
    private Set<UserRole> userRoles;

  }

@Entity
public class Role {


    @OneToMany(fetch = FetchType.LAZY, mappedBy = "pk.role", cascade = CascadeType.ALL)
    private Set<UserRole> userRoles;
}

@Entity
@AssociationOverrides({ @AssociationOverride(name = "pk.user", joinColumns = @JoinColumn(name = "user_id")),
    @AssociationOverride(name = "pk.role", joinColumns = @JoinColumn(name = "role_id")) })
public class UserRole{

    private UserRoleId pk;


    public UserRole(User user, Role role) {

    super();
    this.pk = new UserRoleId(
                 user, role);
    }


    public UserRole() {

    super();
    }


    public Long getUserId() {

    return this.pk.getUser().getId();
    }


    @EmbeddedId
    public UserRoleId getPk() {

    return pk;
    }


    public void setPk(UserRoleId pk) {

    this.pk = pk;
    }


    public User getUser() {

    return this.pk.getUser();
    }


    public Role getRole() {

    return this.pk.getRole();
    }
}

@SuppressWarnings("serial")
@Embeddable
public class UserRoleId implements Serializable {

    private User user;
    private Role role;


    public UserRoleId() {

    super();
    }


    public UserRoleId(User user, Role role) {

    super();
    this.user = user;
    this.role = role;
    }


    @ManyToOne
    public User getUser() {

    return user;
    }


    public void setUser(User user) {

    this.user = user;
    }


    @ManyToOne
    public Role getRole() {

    return role;
    }


    public void setRole(Role role) {

    this.role = role;
    }

}

我收到此错误：

Caused by: org.hibernate.MappingException: Could not determine type for: com.xxx.model.entities.User, at table: UserRole, for columns: [org.hibernate.mapping.Column(user)]

我猜测它与UserRole实体中的getUser函数有关。

Answer 1

我也遇到了和你一样的问题，我通过将注释移到相应的get方法的前面来解决它。

org.hibernate.MappingException：无法确定以下类型：

1 个答案: