Cron表达式不工作的最后一天的一个月

Question

我想安排一个任务在每个月的最后一天上午10:10运行。cron表达式是010l*

现在的问题是CronSequextGenerator正在为'L'值抛出NumberFormatExc0019。这意味着Spring的CronSequextGenerator不支持这种表达式。但是如果我只通过数字，它工作正常。

以下是完整的堆栈跟踪：

Exception in thread "main" java.lang.NumberFormatException: For input string: "L"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:492)
at java.lang.Integer.valueOf(Integer.java:582)
at org.springframework.scheduling.support.CronSequenceGenerator.getRange(CronSequenceGenerator.java:324)
at org.springframework.scheduling.support.CronSequenceGenerator.setNumberHits(CronSequenceGenerator.java:297)
at org.springframework.scheduling.support.CronSequenceGenerator.setDays(CronSequenceGenerator.java:275)
at org.springframework.scheduling.support.CronSequenceGenerator.setDaysOfMonth(CronSequenceGenerator.java:266)
at org.springframework.scheduling.support.CronSequenceGenerator.parse(CronSequenceGenerator.java:239)
at org.springframework.scheduling.support.CronSequenceGenerator.<init>(CronSequenceGenerator.java:81)
at org.springframework.scheduling.support.CronTrigger.<init>(CronTrigger.java:54)
at org.springframework.scheduling.support.CronTrigger.<init>(CronTrigger.java:44)
at com.hcdc.coedp.datantar.scheduler.SchedulerUtil.start(SchedulerUtil.java:75)
at com.hcdc.coedp.datantar.scheduler.SchedulerUtil.changeTrigger(SchedulerUtil.java:106)
at com.hcdc.coedp.datantar.scheduler.SchedulingService.scheduleTransfer(SchedulingService.java:70)
at com.hcdc.coedp.datantar.scheduler.Scheduler.schedule(Scheduler.java:107)     
at main.Main.main(Main.java:47)




Answer 1

Spring不支持月的最后一天。请参阅CronSequenceGenerator的javadoc。

Answer 2

请检查此链接Cron Maker

在文本框中给出您的表达式

0 10 10 L*？

Answer 3

此时间表在每月最后一天上午10:10运行：

@Scheduled(cron = "0 10 10 28-31 * ?")
public void doStuffOnLastDayOfMonth() {
    final Calendar c = Calendar.getInstance();
    if (c.get(Calendar.DATE) == c.getActualMaximum(Calendar.DATE)) {
        // do your stuff
    }
}