我正在使用带有实体的休眠enver

@Entity
@Table(name = "users", schema = "core")
@Audited public class Users implements java.io.Serializable, Comparable<Users> {
    protected static final long serialVersionUID = 1250157348010696249L;    
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Basic(optional = false)
    @Column(name = "userid")
    protected Integer userId;

    @Column(name = "aduserid")
    protected String aduserId;

    @Column(name = "firstname")
    protected String firstName;

    @Column(name = "middlename")

我收到错误：休眠序列不存在。
当我更改为假时，它会显示修订生成器不存在。请帮帮我。