if(buildingNum.length()<2){ buildingNum = "0"+buildingNum; }
	public List<Room> findAllRoomByBuildingNumAndFloor(String buildingNum,String floorNum) {		Map<String,Object> map = new HashMap<String,Object>();		buildingNum += "%";		map.put("buildingNum", buildingNum);		map.put("floorNum", floorNum);		return getSqlSession().selectList(Room.class.getName()+".find_all_room_by_buildingnum",map);	}