SpringBoot集成Quartz实现定时器

2018-06-21 06:52:30来源：未知阅读 ()

SpringBoot+Quartz实现定时器，
由于本人也是刚学习，不足之处请各位大神指正 ..

1.pom配置

<dependency> 
    <groupId>org.springframework</groupId>
    <artifactId>spring-context-support</artifactId> 
</dependency>
<dependency> 
    <groupId>org.springframework</groupId>
    <artifactId>spring-tx</artifactId> 
</dependency>
<dependency> 
    <groupId>org.quartz-scheduler</groupId>
    <artifactId>quartz</artifactId>
    <version>2.2.1</version>
</dependency>

2.注册[pring-boot启动完成事件监听，用于启动job任务

@Configuration
public class SchedulerListener implements ApplicationListener<ContextRefreshedEvent> { 
    @Autowired
    public MyScheduler myScheduler;
    @Override
    public void onApplicationEvent(ContextRefreshedEvent event) { 
        try { 
            myScheduler.scheduleJobs(); 
        } catch (SchedulerException e) { 
            e.printStackTrace(); 
        }
     } 
    @Bean
    public SchedulerFactoryBean schedulerFactoryBean(){
        SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean(); 
        return schedulerFactoryBean; 
    }
}

3、job参数设置

@Component
public class MyScheduler {
    @Autowired
    SchedulerFactoryBean schedulerFactoryBean;
    public void scheduleJobs() throws SchedulerException {
        Scheduler scheduler = schedulerFactoryBean.getScheduler();
        startJob1(scheduler); 
        startJob2(scheduler); 
    }
    private void startJob1(Scheduler scheduler) throws SchedulerException{
        JobDetail jobDetail = JobBuilder.newJob(ScheduledJob.class) .withIdentity("job1", "group1").build(); 
        CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule("0/5 * * * * ?"); 
        CronTrigger cronTrigger = TriggerBuilder.newTrigger().withIdentity("trigger1", "group1") .withSchedule(scheduleBuilder).build(); 
        scheduler.scheduleJob(jobDetail,cronTrigger); 
    } 
    private void startJob2(Scheduler scheduler) throws SchedulerException{ 
        JobDetail jobDetail = JobBuilder.newJob(ScheduledJob2.class) .withIdentity("job2", "group1").build();
        CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule("0/10 * * * * ?"); 
        CronTrigger cronTrigger = TriggerBuilder.newTrigger().withIdentity("trigger2", "group1") .withSchedule(scheduleBuilder).build(); 
        scheduler.scheduleJob(jobDetail,cronTrigger);
    }
}

4.实现各个任务job

public class ScheduledJob implements Job{ 
    private SimpleDateFormat dateFormat() {
        return new SimpleDateFormat("HH:mm:ss");
    } 
    @Override
    public void execute(JobExecutionContext context) throws JobExecutionException { 
        System.out.println("AAAA: The time is now " + dateFormat().format(new Date())); 
    }
}

这样会导致一个问题，就是执行定时器的时候 ，service不能注入 ！ 解决方法: 通过外部来创建serivce ，然后在定时器里调用

　创建ApplicationContextUtil工具类

/**
 * 定时器service注入工具类
 */
@Component
public class ApplicationContextUtil implements ApplicationContextAware{

    private static ApplicationContext applicationContext;

    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }


    public  void setApplicationContext(ApplicationContext applicationContext) {
        ApplicationContextUtil.applicationContext = applicationContext;
    }

    public static Object getBean(String BeanName){
        return applicationContext.getBean(BeanName);
    }
}


2. 在定时器里调用工具类来创建service

   BankService bankService=(BankService) ApplicationContextUtil.getBean("BankService");
   Double money=bankService.getBalance("62279205947481841");

   这样就完美的解决了service注入空指针异常的问题