2，框架获取当前日期和UUID方法

admin

/**
 * 新增房间分类
 *
 * @param roomCategory 房间分类
 * @return 结果
 */
@Override
public int insertRoomCategory(RoomCategory roomCategory) {
    roomCategory.setCreateTime(DateUtils.getNowDate());
    roomCategory.setCategoryId(IdUtils.fastSimpleUUID());
    return roomCategoryMapper.insertRoomCategory(roomCategory);
}// Hello World
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