无能狂怒之我对配置类一无所知之自动填充和分页

@Data
@TableName("tb_item")
public class Item {
    @TableId(type = IdType.AUTO)
    private Long id;//商品id
    private String name;//商品名称
    private Long price;//价格（分）
    private Integer stock;//库存数量
    private String image;//商品图片
    private String category;//分类名称
    private String brand;//品牌名称
    private String spec;//规格
    private Integer sold;//销量
    private Integer commentCount;//评论数
    private Integer status;//商品状态 1-正常，2-下架
    @TableField("isAD")
    private Boolean isAD;//商品状态 1-正常，2-下架
    @TableField(value = "create_time",fill = FieldFill.INSERT)
    private Date createTime;//创建时间
    @TableField(value = "update_time",fill = FieldFill.INSERT_UPDATE)
    private Date updateTime;//更新时间
}

自动填充id
@TableId(type = IdType.AUTO)

映射到数据库的字段，自动填充方式
@TableField(value = "create_time",fill = FieldFill.INSERT)

@Component
public class MybatisMetaObjectHandler implements MetaObjectHandler {

    
    @Override
    public void insertFill(MetaObject metaObject) {
        metaObject.setValue("createTime", new Date());
        metaObject.setValue("updateTime", new Date());
    }

    
    @Override
    public void updateFill(MetaObject metaObject) {
        metaObject.setValue("updateTime", new Date());
    }
}

//分页查询
Page itemPage = new Page<>(page,size);
Page page1 = itemMapper.selectPage(itemPage, null);

//mybatisplus分页配置类
@Configuration
public class MybatisPlusConfig {

    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor(){
        MybatisPlusInterceptor mybatisPlusInterceptor = new MybatisPlusInterceptor();
        mybatisPlusInterceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return mybatisPlusInterceptor;
    }
}