SpringBoot - Mybatis-Plus 时间字段自动填充教程

1. 在你指定的属性上加上注解 @TableField

    /* 插入时填充 */
    @TableField(fill = FieldFill.INSERT)
    private LocalDateTime createTime;
    
    /* 第一次插入和之后更新时填充 */
    @TableField(fill = FieldFill.INSERT_UPDATE)
    private LocalDateTime updateTime;

1. 写个配置类实现 MetaObjectHandler 接口,

package com.sage.config.mp;

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.time.LocalDateTime;

@Slf4j
@Component
public class MyMetaObjectHandler implements MetaObjectHandler {

    @Override
    public void insertFill(MetaObject metaObject) {
        log.info("start insert fill ....");
        this.setInsertFieldValByName("createTime", LocalDateTime.now(), metaObject);
        this.setUpdateFieldValByName("updateTime", LocalDateTime.now(), metaObject);
    }

    @Override
    public void updateFill(MetaObject metaObject) {
        log.info("start update fill ....");
        this.setUpdateFieldValByName("updateTime", LocalDateTime.now(), metaObject);
    }
}