mybatisPlus查询

 mybatisPlus    lambda查询数据 查多条

	@Override
	public List<AlarmEvent> getCurrentList() {
		List<AlarmEvent> alarmEventList = baseMapper.selectList(new 
         QueryWrapper<AlarmEvent>().lambda().eq
(AlarmEvent::getIsAlarm,1).orderByDesc(AlarmEvent::getAlarmTime).last("limit 3"));
		
		return alarmEventList;
	}

 查单条记录

AlarmEvent alarmEvent = alarmEventMapper.selectOne(wrapper);