}
}
实体类PasswordTicket代表一个重置口令的请求：
@Entity
@Table(name="T_PWDT")
public class PasswordTicket {
private String id;
private User user;
private String ticket;
private long createdDate; @Id
@Column(nullable=false, updatable=false, length=32)
@GeneratedValue(generator="system-uuid")