Java.lang.IllegalArgumentException:超时间为负值

Question

我有一个线程，每天在给定的时间运行。它给了我这个错误信息:

2014-05-21 03:57:06 [CRITICAL][AlertMgr]: maintenance:

. lang。IllegalArgumentException:超时值为负值在java.lang.Thread。睡眠(本地方法)在com.orca.pf.tc50.managerutilities.maintenance.MaintenanceManager.backgroundProcess(未知源)在com.orca.pf.tc50.managerutilities.maintenance.MaintenanceManager.access 000美元(未知源)在com.orca.pf.tc50.managerutilities.maintenance.MaintenanceManager 1.美元(未知源)java.lang.Thread.run (Thread.java: 745) .

你知道是什么原因引起的吗?

感谢

private void backgroundProcess()
{
    Calendar                    cal;
    cal = Calendar.getInstance();
    log.addHelpField("AlertMgr");
    /*
     * Synchronise le calendrier a 3:00AM
     */
    cal.set(Calendar.MINUTE, 0);
    cal.set(Calendar.SECOND, 0);
    cal.set(Calendar.MILLISECOND, 0);
    if (cal.get(Calendar.HOUR_OF_DAY) > HOUR_START)
    {
        /*
         * wait till tomorrow
         */
        cal.set(Calendar.HOUR_OF_DAY, HOUR_START);
        cal.add(Calendar.DAY_OF_YEAR, 1);
    }
    else
    {
        cal.set(Calendar.HOUR_OF_DAY, HOUR_START);   
    }
    do
    {
        try
        {
            /*
             * Calculate the time to wait
             */
            long timeToWait = cal.getTimeInMillis() - System.currentTimeMillis();
            Thread.sleep(timeToWait);

            processAllEntries();
            /*
             * wait for tomorrow
             */
            cal.add(Calendar.DAY_OF_YEAR, 1);

            /*
             * Clear 
             */
            Thread.interrupted();
        }
        catch(InterruptedException i)
        {
            Thread.currentThread().interrupt();
        }
        catch(Exception ex)
        {
            log.addException(LogLevel.CRITICAL, "maintenance", ex);
        }
    }
    while(!th.isInterrupted());
}

Answer 1

我有一个建议，而不是使用Thread.sleep()尝试查看Java Timer类。它会简化你每x小时安排工作的任务。这将节省你计算睡眠时间来安排下一个任务的努力。这个类让您专注于业务逻辑，并负责安排任务的工作。