mybatisplus学习

填充功能

1、实现处理器接口

package com.hgchain.data.service.manager.configure;
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) {
        this.strictInsertFill(metaObject, "createTime", LocalDateTime.class, LocalDateTime.now());


    }

    @Override
    public void updateFill(MetaObject metaObject) {
        this.strictUpdateFill(metaObject, "updateTime", () -> LocalDateTime.now(), LocalDateTime.class);
    }
}

　　2、字段注解

 @TableField(value = "createTime",fill = FieldFill.INSERT)
    private LocalDateTime createTime;

    @TableField(value = "updateTime",fill = FieldFill.INSERT_UPDATE)
    private LocalDateTime updateTime;

　　

and中套用or的使用

因为直接拼多个wrapper条件加or会产生数据混乱，需要使用and括号括起来or条件

 

 

 数据权限参考：https://blog.csdn.net/qq_43437874/article/details/114691376