Cron表达式未来N次运行时间

实现

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/**
 * 计算表达式近N次时间
 *
 * @param cron  表达式
 * @param times 次数
 * @return 列表
 */
public static List<String> calcExecuteTimes(String cron, int times) {
    if (StringUtils.isEmpty(cron)) {
        throw new IllegalArgumentException("参数不能为空");
    }
    CronSequenceGenerator cronSequenceGenerator = new CronSequenceGenerator(cron);
    List<String> list = new ArrayList<>(times);
    Date nextTimePoint = new Date();
    for (int i = 0; i < times; i++) {
        nextTimePoint = cronSequenceGenerator.next(nextTimePoint);
        list.add(DateFormatUtils.format(nextTimePoint, ""));
    }
    return list;
}

public static void main(String[] args) throws Exception {
    List<String> list = calcExecuteTimes("5 0/1 * * * ?", 10);
    for (int i = 0; i < list.size(); i++) {
        System.out.println(list.get(i));
    }
}