如何使Quartz调度程序待机

Question

我有使用Spring的石英作业实现。我的调度程序工作正常，作业执行完美。我的问题是如何将此调度程序置于待机状态？这样一旦我决定将调度程序置于待机模式，就不会触发任何作业。下面是作业类

public class MyJobClass extends  QuartzJobBean  {
//my job logic
}

来自applicationContext_调度程序的代码片段。xml

<bean name="myJobBean"
class="org.springframework.scheduling.quartz.JobDetailFactoryBean">
<property name="jobClass" value="MyJobClass" />
</bean>         
<bean id="rsHourlyJobCronTrigger"
class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
<property name="jobDetail" ref="myJobBean" />                       
<property name="cronExpression" value="00 0/1 * * * ?" />
</bean>

Answer 1

而不是用xml创建调度器bean。我会按如下程序制作：

@Configuration
public class QuartzSchedulerConfiguration {

  @Autowired
  private ApplicationContext applicationContext;

  @Bean
  public JobFactory jobFactory() {
    ApplicationContextHolder jobFactory = new ApplicationContextHolder();
    jobFactory.setApplicationContext(applicationContext);
    return jobFactory;
  }

  @Bean
  public SchedulerFactoryBean schedulerFactory() {
    SchedulerFactoryBean factory = new SchedulerFactoryBean();
    factory.setAutoStartup(true);
    factory.setSchedulerName("Quartz Scheduler");
    factory.setOverwriteExistingJobs(true);
    factory.setJobFactory(jobFactory());
    return factory;
  }
}

@Component
public final class ApplicationContextHolder extends SpringBeanJobFactory implements ApplicationContextAware {

  private static ApplicationContext context;

  private transient AutowireCapableBeanFactory beanFactory;

  @Override
  public void setApplicationContext(ApplicationContext ctx) throws BeansException {
    beanFactory = ctx.getAutowireCapableBeanFactory();
    context = ctx;
  }

  @Override
  protected Object createJobInstance(final TriggerFiredBundle bundle) throws Exception {
    final Object job = super.createJobInstance(bundle);
    beanFactory.autowireBean(job);
    return job;
  }

  public static ApplicationContext getContext() {
    return context;
  }
}

这将创建石英调度器bean，该bean具有应用程序上下文意识，允许您将spring对象自动连接到石英作业中。

然后创建一些调度服务，如：

@Service
public class SchedulerService {

  @Autowired
  private SchedulerFactoryBean schedulerFactory;

  private Scheduler scheduler;

  @PostConstruct
  private void init() {
    scheduler = schedulerFactory.getScheduler();
  }

  public void standBy() throws Exception {
    if (scheduler != null && !scheduler.isInStandbyMode()) {
      scheduler.standby();
    }
  }
}

然后添加调度所需的其他方法。