使用UUID作为主键时,Hibernate会出现错误的ID值

Question

我的实体:

@Entity
@Table(name = "eh_portal")
public class PortalEntity {

    @Id
    @Column(name = "id", columnDefinition = "CHAR(36)")
    private UUID id; //java.util.UUID;

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

    @Column(name = "url")
    private String url;

    // -- Constructor for Hibernate --
    protected PortalEntity() {
    }

    // -- Constructor for new entity in service code --
    public PortalEntity(final UUID id) {
        this.id = id;
    }
    .... getters and setters ommited
}

存储库是Spring DATA JPA:

public interface PortalRepository extends CrudRepository<PortalEntity, UUID> {

}

MYSQL 5数据库表定义:

CREATE TABLE `eh_portal` (
  `id` char(36) NOT NULL COMMENT 'UUID',
  `name` varchar(255) NOT NULL,
  `url` varchar(255) NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `url_UNIQUE` (`url`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

问题是,Hibernate显然返回了错误的数据 - 请参阅Mysql workbench下面的截图:

通过Spring Data JPA获取实体的实际网页:

你可以看到UUID明显不同,而其他列是正确的.这有什么不对？(Spring 4,Hibernate 4,Spring DATA JPA,Mysql 5)

Answer 1

尝试使用@Type(type="uuid-char").