mybatisPlus自动填创建时间和修改时间

package com.example.demo.config;

import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;

import java.util.Date;

@Slf4j
@Component // 一定不要忘记把处理器加到IOC容器中
public class MyMetaObjectHandler implements MetaObjectHandler {

    // 插入时候的填充策略
    @Override
    public void insertFill(MetaObject metaObject) {
        log.info("start insert fill ...");
        // setFieldValByName(String fieldName, Object fieldVal, MetaObject metaObject)
        this.setFieldValByName("createTime", new Date(), metaObject);
        this.setFieldValByName("updateTime", new Date(), metaObject);
    }

    // 更新时的填充策略
    @Override
    public void updateFill(MetaObject metaObject) {
        log.info("start update fill ...");
        this.setFieldValByName("updateTime", new Date(), metaObject);
    }

}

 /**
     *创建日期
     * @author lzc
     * @date 2021/6/1 14:08
     */
    @TableField( value = "crt_time",fill = FieldFill.INSERT)
    private Date createTime;


    /**
     *修改日期
     * @author lzc
     * @date 2021/6/1 14:08
     */
    @TableField(value = "upd_time",fill = FieldFill.INSERT_UPDATE)
    @JsonFormat(pattern = "yyyy-MM-dd",timezone = "GMT+8")
    private Date updateTime;