Spring的Task定时任务

<bean name="TokenConfigs" init-method="update" class="com.weiruan.common.configs.OrderServiceImpl"/><task:scheduled-tasks ><!--微信token每小时获取一次--><task:scheduled ref="TokenConfigs" method="update" cron="45 59 * * * ?"/></task:scheduled-tasks>

public class OrderServiceImpl implements OrderService {    private Logger logger = Logger.getLogger(this.getClass().getName());    public int update() {        Date time = DateUtils.add(Calendar.DAY_OF_MONTH, -1);        logger.info("自动确认收货执行中");        return orderDao.confirmOrder(time);    }}