实现远程网络连接，检测驱动，每分钟检查数据库中的任务时间是否等于指定时间，从而实现定时打印（如年报，月报等），从而 实现后台定时打印-Remote network connection, testing drivers, check the database every minute of the task is equivalent to a specified period of time in order to achieve regular print (such as annual