mybatisPlus查询

 mybatisPlus    lambda查询数据 查多条

	@Overridepublic 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);