/**
 * 根据Cron表达式获取接下来的最近几次触发时间
 * @param numTimes The number of next fire times to produce
 * Comment by 玄玉<https://jadyer.cn/> on 2018/11/15 11:02.
 */
List<Date> getNextFireTimes(String cron, int numTimes) {
    if(!CronExpression.isValidExpression(cron)){
        throw new IllegalArgumentException("CronExpression不正确");
    }
    List<String> list = new ArrayList<>();
    CronTriggerImpl cronTriggerImpl = new CronTriggerImpl();
    try {
        cronTriggerImpl.setCronExpression(cron);
    } catch (ParseException e) {
        throw new SeedException(CodeEnum.SYSTEM_BUSY.getCode(), "使用表达式["+cron+"]初始化CronTrigger时出错", e);
    }
    return TriggerUtils.computeFireTimes(cronTriggerImpl, null, numTimes);
}
 

public static List<String> getRecentTriggerTime(String cron) {
    List<String> list = new ArrayList<String>();
    try {
        CronTriggerImpl cronTriggerImpl = new CronTriggerImpl();
        cronTriggerImpl.setCronExpression(cron);
        List<Date> dates = TriggerUtils.computeFireTimes(cronTriggerImpl, null, 5);
        for (Date date : dates) {
            list.add(DateUtils.parseStringFromDate(date,DateUtils.format));
        }
    } catch (ParseException e) {
        e.printStackTrace();
    }
    return list;
}