mybatis-plus自动填充功能

如果需要用到自动填充功能，比如自动填充数据的新增日期，修改日期。先在config包下新增一个配置文件MyMetaObjectHandler

package com.xzit.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.time.LocalDateTime;
import java.util.Date;

@Slf4j
@Component
public class MyMetaObjectHandler implements MetaObjectHandler {

    @Override
    public void insertFill(MetaObject metaObject) {
        log.info("start insert fill ....");
        this.strictInsertFill(metaObject, "createTime", () -> new Date(), Date.class); // 起始版本 3.3.3(推荐)
    }

    @Override
    public void updateFill(MetaObject metaObject) {
    }
}

然后在实体类里想要自动填充的字段上面加上

 @TableField(fill = FieldFill.INSERT)

注解即可

package com.xzit.entity;

import com.baomidou.mybatisplus.annotation.*;
import lombok.Data;

import java.io.Serializable;
import java.util.Date;

/**
 * 
 * @TableName member
 */
@TableName(value ="member")
@Data
public class Member implements Serializable {
    /**
     * 
     */
    @TableId(type = IdType.AUTO)
    private Integer id;

    /**
     * 会员姓名
     */
    private String memberName;

    /**
     * 会员等级
     */
    private Integer level;

    /**
     * 入会时间
     */
    @TableField(fill = FieldFill.INSERT)
    private Date createTime;

    /**
     * 是否删除
     */
    private Integer deleted;

    @TableField(exist = false)
    private static final long serialVersionUID = 1L;
}