跨时区的Java Quartz-Scheduler

  • Z时代
  • 2024-01-10
  • 分类：问答

我的服务器在欧洲/罗马时区上运行-这是服务器上的默认tz-

我需要根据用户所在的时区安排工作，因此，如果居住在太平洋/檀香山时区的用户安排了一个CronTrigger每天下午22:00到达他所在的地球区域，我发现了以下解决方案：

CronTrigger trigger = newTrigger()
  .withIdentity("name", "group")
  .withSchedule(
    cronSchedule("0 0 22 ? * *").inTimeZone(TimeZone.getTimeZone("Pacific/Honolulu"))
  )
  .startNow()
  .build();

此工作 。

除了保持时区更新（即时区更新工具）外，还有一些特殊的问题需要考虑？

如果我想为上一份工作定义.startAt（）和.endAt（），这种日期还可以吗？使用此过程可能会节省夏时制吗？

Calendar calTZStarts = new GregorianCalendar(TimeZone.getTimeZone("Pacific/Honolulu"));
calTZStarts.set(2013, Calendar.JANUARY, 10);
Calendar calTZEnds = new GregorianCalendar(TimeZone.getTimeZone("Pacific/Honolulu"));
calTZEnds.set(2013, Calendar.JANUARY, 30);
Calendar calStarts = Calendar.getInstance();
calStarts.set(Calendar.YEAR, calTZStarts.get(Calendar.YEAR));
calStarts.set(Calendar.MONTH, calTZStarts.get(Calendar.MONTH));
calStarts.set(Calendar.DAY_OF_MONTH, calTZStarts.get(Calendar.DAY_OF_MONTH));
calStarts.set(Calendar.HOUR_OF_DAY, calTZStarts.get(Calendar.HOUR_OF_DAY));
calStarts.set(Calendar.MINUTE, calTZStarts.get(Calendar.MINUTE));
calStarts.set(Calendar.SECOND, calTZStarts.get(Calendar.SECOND));
calStarts.set(Calendar.MILLISECOND, calTZStarts.get(Calendar.MILLISECOND));
Calendar calEnds = Calendar.getInstance();
calEnds.set(Calendar.YEAR, calTZEnds.get(Calendar.YEAR));
calEnds.set(Calendar.MONTH, calTZEnds.get(Calendar.MONTH));
calEnds.set(Calendar.DAY_OF_MONTH, calTZEnds.get(Calendar.DAY_OF_MONTH));
calEnds.set(Calendar.HOUR_OF_DAY, calTZEnds.get(Calendar.HOUR_OF_DAY));
calEnds.set(Calendar.MINUTE, calTZEnds.get(Calendar.MINUTE));
calEnds.set(Calendar.SECOND, calTZEnds.get(Calendar.SECOND));
calEnds.set(Calendar.MILLISECOND, calTZEnds.get(Calendar.MILLISECOND));
CronTrigger trigger = newTrigger()
  .withIdentity("name", "group")
  .withSchedule(
    cronSchedule("0 0 22 ? * *").inTimeZone(TimeZone.getTimeZone("Pacific/Honolulu"))
  )
  .startAt(calStarts.getTime())
  .endAt(calEnds.getTime())
  .build();

或者我必须简单地设置开始和结束使用：

Calendar calTZStarts = new GregorianCalendar();
calTZStarts.set(2013, Calendar.JANUARY, 10, 0, 0, 0);
Calendar calTZEnds = new GregorianCalendar();
calTZEnds.set(2013, Calendar.JANUARY, 30, 0, 0, 0);
CronTrigger trigger = newTrigger()
  .withIdentity("name", "group")
  .withSchedule(
    cronSchedule("0 0 22 ? * *").inTimeZone(TimeZone.getTimeZone("Pacific/Honolulu"))
  )
  .startAt(calTZStarts.getTime())
  .endAt(calTZEnds.getTime())
  .build();

然后，作业在“太平洋/檀香山”定义的日期正确开始/结束？

预先感谢您的每个建议

回答：

我想我找到了经过测试的解决方案，并且在证明没有问题之前一直有效；）

重新启动我的服务器在特定时区（即欧洲/罗马）上运行

如果Pacific / Honolulu

TZ上的用户要计划从Sun（2013年1月27日，下午3:00）开始的作业，结束于2013年1月31日（星期四），晚上9:00结束，则每天每五分钟从2:00

PM到10:55 PM（0 0/5 14-22 * *？）正确的方法如下：

  • 在CronScheduleBuilder的inTimeZone方法中设置用户时区

  • 从太平洋/火奴鲁鲁转换为欧洲/罗马以适应服务器时间startAt和endAt日期

样例代码：

// Begin User Input
String userDefinedTZ = "Pacific/Honolulu"; // +11
int userStartYear = 2013;
int userStartMonth = Calendar.JANUARY;
int UserStartDayOfMonth = 27;
int userStartHour = 15;
int userStartMinute = 0;
int userStartSecond = 0;
int userEndYear = 2013;
int userEndMonth = Calendar.JANUARY;
int UserEndDayOfMonth = 31;
int userEndHour = 21;
int userEndMinute = 0;
int userEndSecond = 0;
// End User Input
Calendar userStartDefinedTime = Calendar.getInstance();
// set start schedule by user input
userStartDefinedTime.set(userStartYear, userStartMonth, UserStartDayOfMonth, userStartHour, userStartMinute, userStartSecond);
Calendar userEndDefinedTime = Calendar.getInstance();
// set end schedule by user input
userEndDefinedTime.set(userEndYear, userEndMonth, UserEndDayOfMonth, userEndHour, userEndMinute, userEndSecond);
CronTrigger trigger = newTrigger()
  .withIdentity("name", "group")
  .withSchedule(
    // define timezone for the CronScheduleBuilder
    cronSchedule("0 0/5 14-22 * * ?").inTimeZone(TimeZone.getTimeZone("Pacific/Honolulu"))
  )
  // adapt user start date to server timezone
  .startAt( convertDateToServerTimeZone(userStartDefinedTime.getTime(), userDefinedTZ) )
  // adapt user end date to server timezone
  .endAt( convertDateToServerTimeZone(userEndDefinedTime.getTime(), userDefinedTZ) )
  .build();

用于根据tz转换日期的实用程序：

public Calendar convertDateToServerTimeZone(Date dateTime, String timeZone) {
    Calendar userDefinedTime = Calendar.getInstance();
    userDefinedTime.setTime(dateTime);
    if(!TimeZone.getDefault().getID().equalsIgnoreCase(timeZone)) {
    System.out.println        ("original defined time: " + userDefinedTime.getTime().toString() + " on tz:" + timeZone);
    Calendar quartzStartDate = new GregorianCalendar(TimeZone.getTimeZone(timeZone));
    quartzStartDate.set(Calendar.YEAR, userDefinedTime.get(Calendar.YEAR));
    quartzStartDate.set(Calendar.MONTH, userDefinedTime.get(Calendar.MONTH));
    quartzStartDate.set(Calendar.DAY_OF_MONTH, userDefinedTime.get(Calendar.DAY_OF_MONTH));
    quartzStartDate.set(Calendar.HOUR_OF_DAY, userDefinedTime.get(Calendar.HOUR_OF_DAY));
    quartzStartDate.set(Calendar.MINUTE, userDefinedTime.get(Calendar.MINUTE));
    quartzStartDate.set(Calendar.SECOND, userDefinedTime.get(Calendar.SECOND));
    quartzStartDate.set(Calendar.MILLISECOND, userDefinedTime.get(Calendar.MILLISECOND));
    System.out.println("adapted time for " + TimeZone.getDefault().getID() + ": " + quartzStartDate.getTime().toString());
    return quartzStartDate;
    } else {
    return userDefinedTime;
    }
}

==开始更新2012-01-24 ==

基于Quartz的实用程序，使用DateBuilder基于tz转换日期：

public Calendar convertDateToServerTimeZone(Date dateTime, String timeZone) {
    Calendar userDefinedTime = Calendar.getInstance();
    userDefinedTime.setTime(dateTime);
    if(!TimeZone.getDefault().getID().equalsIgnoreCase(timeZone)) {
      System.out.println("original defined time: " + userDefinedTime.getTime().toString() + " on tz:" + timeZone);
      Date translatedTime = DateBuilder.translateTime(userDefinedTime.getTime(), TimeZone.getDefault(), TimeZone.getTimeZone(timeZone));
      Calendar quartzStartDate = new GregorianCalendar();
      quartzStartDate.setTime(translatedTime);
      System.out.println("adapted time for " + TimeZone.getDefault().getID() + ": " + quartzStartDate.getTime().toString());
      return quartzStartDate;
    } else {
      return userDefinedTime;
    }
}

==更新结束2012-01-24 ==

因此，

在为开始时间和结束时间构建日期时，还应在实例化日期之前指定时区（在java.util.Calendar上，或在日期格式字符串上，或在org.quartz.DateBuilder上）。然后，石英在该特定时区中以UTC格式存储了自1970年1月1日起的毫秒数，因此，当服务器的时区更改时，触发器不会受到影响。

以上是 跨时区的Java Quartz-Scheduler 的全部内容， 来源链接： utcz.com/qa/418911.html

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