在 Java 中使用石英進行作業鏈

Question

我想按順序執行多個作業。 我正在以下列方式嘗試它，但不知何故它不會被使用 cron 作業觸發。

我不確定它是否是正確的實現方法。 有人可以指導我嗎？

謝謝..

        Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
        JobChainingJobListener jobListener =new JobChainingJobListener("ChainListener");

        JobDetail job1 = JobBuilder.newJob(MyJob1.class)
                .withIdentity(MyJob1.class.getName()).
                withDescription(MyJob1.class.getName())
                .build();

        JobDetail job2 = JobBuilder.newJob(MyJob2.class)
                .withIdentity(MyJob2.class.getName()).
                withDescription(MyJob2.class.getName())
                .build();

        JobDetail job3 = JobBuilder.newJob(MyJob3.class)
                .withIdentity(MyJob3.class.getName()).
                withDescription(MyJob3.class.getName())
                .build();           

        Trigger jobTrigger = TriggerBuilder.newTrigger()
                .withIdentity("MyTrigger")
                .withSchedule(CronScheduleBuilder.cronSchedule(cronTrigger)).build();
        scheduler.scheduleJob(job1, jobTrigger);    
        scheduler.addJob(job2, true);
        scheduler.addJob(job3, true);               

        jobListener.addJobChainLink(job1.getKey(), job2.getKey());
        jobListener.addJobChainLink(job2.getKey(), job3.getKey());
        scheduler.getListenerManager().addJobListener(jobListener);
        scheduler.start();

Answer 1

將組名添加到作業並觸發身份后能夠執行它。 這是正確的代碼：

    Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
    JobChainingJobListener jobListener =new JobChainingJobListener("ChainListener");

    JobDetail job1 = JobBuilder.newJob(MyJob1.class)
            .withIdentity(MyJob1.class.getName(),"BatchJobGroup").
            withDescription(MyJob1.class.getName())
            .build();

    JobDetail job2 = JobBuilder.newJob(MyJob2.class)
            .withIdentity(MyJob2.class.getName(),"BatchJobGroup").
            withDescription(MyJob2.class.getName())
            .build();

    JobDetail job3 = JobBuilder.newJob(MyJob3.class)
            .withIdentity(MyJob3.class.getName(),"BatchJobGroup").
            withDescription(MyJob3.class.getName())
            .build();           

    Trigger jobTrigger = TriggerBuilder.newTrigger()
            .withIdentity("MyTrigger","BatchJobGroup").
            .withSchedule(CronScheduleBuilder.cronSchedule("* * * * *")).build();

    scheduler.scheduleJob(job1, jobTrigger);    
    scheduler.addJob(job2, true);
    scheduler.addJob(job3, true);               

    jobListener.addJobChainLink(job1.getKey(), job2.getKey());
    jobListener.addJobChainLink(job2.getKey(), job3.getKey());
    scheduler.getListenerManager().addJobListener(jobListener);
    scheduler.start();

Answer 2

我用 Sachin 的答案來創建這個：

public class Main {

public static void main(String[] args) throws SchedulerException {
    JobDetail jobA = JobBuilder.newJob(JobA.class).build();
    JobDetail jobB = JobBuilder.newJob(JobB.class).storeDurably(true).build();

    JobChainingJobListener jobListener = new JobChainingJobListener("ChainListener");
    jobListener.addJobChainLink(jobA.getKey(), jobB.getKey());

    Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
    scheduler.scheduleJob(jobA, TriggerBuilder.newTrigger().startNow().build());
    scheduler.addJob(jobB, true);
    scheduler.getListenerManager().addJobListener(jobListener);
    scheduler.start();
}

public static class JobA implements Job {
    @Override
    public void execute(JobExecutionContext context) {
        System.out.println("Job A running...");
    }
}

public static class JobB implements Job {
    @Override
    public void execute(JobExecutionContext context) {
        System.out.println("Job B running...");
    }
}}

GitHub 上的工作示例： https : //github.com/topera/poc-quartz-chain