如何在Java中使用Quartz Scheduler框架运行cron作业？

Question

I am using Quartz Scheduler in Java to run cron jobs. This is the first time I am using this framework to run the cron jobs so I am having some confusion.

I was following this tutorial to get the better understanding how to use Quartz framework.

I am trying to run JobA every week and every month so I started with basic example -

Here is my example which I have got so far.

public class JobA implements Job {

    @Override
    public void execute(JobExecutionContext context)
            throws JobExecutionException {
        System.out.println("Job A is runing");

        // print whether it is week or month
    }
}

Below is my CronTriggerExample which schedules the job to run

public class CronTriggerExample {
    public static void main(String[] args) throws Exception {

        JobKey jobKeyA = new JobKey("jobA", "group1");
        JobDetail jobA = JobBuilder.newJob(JobA.class).withIdentity(jobKeyA)
                .build();

        Trigger trigger1 = TriggerBuilder
                .newTrigger()
                .withIdentity("dummyTriggerName1", "group1")
                .withSchedule(CronScheduleBuilder.cronSchedule("5 8 * * 6 ?"))
                .build();

        Scheduler scheduler = new StdSchedulerFactory().getScheduler();

        scheduler.start();
        scheduler.scheduleJob(jobA, trigger1);
    }
}

Problem Statement:-

I am not sure how to run JobA every week and every month using the above code. What will be my cron tab entry for a week and month in my case? I don't want to run any Job between 8 PM till 5 AM and any random day is fine.

If JobA is running every week, then it should print out one-week and report_week . But if JobA is running every month, then it should print out one-month and report_one_month so the next question is - Is there any way, we can pass parameters to JobA when we try to run it?

Answer 1

The meaning of the 7 fields of cron in quartz:

second minute hour day month week year

year field is optional. * means every, for example, * in week field means every week, so you should use * in both week field and month field. Note when the week field is specified, don't forget to use ? in day field.

My example cron entry for you requirement is:

0 0 0 ? * *

which means running the job every week and every month on 00:00:00, please tune it for your need.

For more information, reference: CronTrigger .

I hope it helps.

Answer 2

You can pass JobData if required

JobBuilder.newJob(JobClass.class);
jobDetail = jobBuilder.usingJobData("Key", "VALUE")
                    .withIdentity(dbname.getSchemaName(), "group1").build();


However for your case you need to modify cron expression provided in your cronschedular

http://www.cronmaker.com/

Follow above link to build cron expression