@Data
@ToString
@MappedSuperclass
@EqualsAndHashCode
public class BaseEntity {

@Column(name = "create_time")
@Temporal(TemporalType.TIMESTAMP)
private Date createTime;

@Column(name = "update_time")
@Temporal(TemporalType.TIMESTAMP)
private Date updateTime;

@PrePersist
protected void prePersist() {
Date now = DateUtils.now();
if (createTime == null) {
createTime = now;
}

if (updateTime == null) {
updateTime = now;
}
}

@PreUpdate
protected void preUpdate() {
updateTime = new Date();
}

@PreRemove
protected void preRemove() {
updateTime = new Date();
}

}