mybatis-plus实现当前时间戳自动更新

以下分为两种方式，可实现createTime自动填充，updateTime自动更新：

数据库级别
代码处理器级别

实体类

@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {

    //@TableId(type = IdType.AUTO)
    private int id;
    private String name;
    private String pwd;

    //给字段设置填充策略
    @TableField(fill = FieldFill.INSERT)
    private Date createTime;

    @TableField(fill = FieldFill.INSERT_UPDATE)
    private Date updateTime;
}

@Slf4j
@Component
public class MymetaObjectHandler implements metaObjectHandler {

    
    @Override
    public void insertFill(metaObject metaObject) {
        log.info("start insert fill ...");
        this.setFieldValByName("createTime", new Date(), metaObject);
        this.setFieldValByName("updateTime", new Date(), metaObject);
    }

    @Override
    public void updateFill(metaObject metaObject) {
        log.info("start update fill ...");
        this.setFieldValByName("updateTime", new Date(), metaObject);
    }
}