Spring Boot 整合 Quartz 实现 Java 定时任务的动态配置

<dependency>
    <groupId>org.quartz-schedulergroupId>
    <artifactId>quartzartifactId>
    <version>2.2.1version>
dependency>
<dependency>
    <groupId>org.springframeworkgroupId>
    <artifactId>spring-context-supportartifactId>
dependency>

CREATE TABLE `sys_task` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `job_name` varchar(255) DEFAULT NULL COMMENT '任务名',
  `description` varchar(255) DEFAULT NULL COMMENT '任务描述',
  `cron_expression` varchar(255) DEFAULT NULL COMMENT 'cron表达式',
  `bean_class` varchar(255) DEFAULT NULL COMMENT '任务执行时调用哪个类的方法 包名+类名',
  `job_status` varchar(255) DEFAULT NULL COMMENT '任务状态',
  `job_group` varchar(255) DEFAULT NULL COMMENT '任务分组',
  `create_user` varchar(64) DEFAULT NULL COMMENT '创建者',
  `create_time` datetime DEFAULT NULL COMMENT '创建时间',
  `update_user` varchar(64) DEFAULT NULL COMMENT '更新者',
  `update_time` datetime DEFAULT NULL COMMENT '更新时间',
  PRIMARY KEY (`id`)
) ENGINE=MyISAM AUTO_INCREMENT=32 DEFAULT CHARSET=utf8;

@Configuration
public class QuartzConfigration {

    @Autowired
    private JobFactory jobFactory;

    @Bean
    public SchedulerFactoryBean schedulerFactoryBean() {
        SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean();
        try {
            schedulerFactoryBean.setOverwriteExistingJobs(true);
            schedulerFactoryBean.setQuartzProperties(quartzProperties());
            schedulerFactoryBean.setJobFactory(jobFactory);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return schedulerFactoryBean;
    }

    // 指定quartz.properties，可在配置文件中配置相关属性
    @Bean
    public Properties quartzProperties() throws IOException {
        PropertiesFactoryBean propertiesFactoryBean = new PropertiesFactoryBean();
        propertiesFactoryBean.setLocation(new ClassPathResource("/config/quartz.properties"));
        propertiesFactoryBean.afterPropertiesSet();
        return propertiesFactoryBean.getObject();
    }

    // 创建schedule
    @Bean(name = "scheduler")
    public Scheduler scheduler() {
        return schedulerFactoryBean().getScheduler();
    }
}

@Component
@Order(value = 1)
public class ScheduleJobInitListener implements CommandLineRunner {

    @Autowired
    TaskService scheduleJobService;

    @Override
    public void run(String... arg0) throws Exception {
        try {
            scheduleJobService.initSchedule();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

}

@Override
    public void initSchedule() throws SchedulerException {
        // 这里获取任务信息数据
        List jobList = taskMapper.list();
        for (TaskDO task : jobList) {
            if (JobStatusEnum.RUNNING.getCode().equals(task.getJobStatus())) {
                quartzManager.addJob(task);
            }
        }
    }

/**
     * 添加任务*/
    @SuppressWarnings("unchecked")
    public void addJob(TaskDO task) {
        try {
            // 创建jobDetail实例，绑定Job实现类
            // 指明job的名称，所在组的名称，以及绑定job类
            Classextends Job> jobClass = (Classextends Job>) (Class.forName(task.getBeanClass()).newInstance()
                    .getClass());
            JobDetail jobDetail = JobBuilder.newJob(jobClass).withIdentity(task.getJobName(), task.getJobGroup())// 任务名称和组构成任务key
                    .build();
            // 定义调度触发规则
            // 使用cornTrigger规则
            Trigger trigger = TriggerBuilder.newTrigger().withIdentity(task.getJobName(), task.getJobGroup())// 触发器key
                    .startAt(DateBuilder.futureDate(1, IntervalUnit.SECOND))
                    .withSchedule(CronScheduleBuilder.cronSchedule(task.getCronExpression())).startNow().build();
            // 把作业和触发器注册到任务调度中
            scheduler.scheduleJob(jobDetail, trigger);
            // 启动
            if (!scheduler.isShutdown()) {
                scheduler.start();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

@Component
public class JobFactory extends AdaptableJobFactory {
    //这个对象Spring会帮我们自动注入进来,也属于Spring技术范畴.
    //为什么需要这个类呢，在我写的这个demo中，大家可以将此类删掉，发现程序也可以正确运行，可是我为什么还是加上呢。
    //大家可以看下我们的任务类，大家可以看到Job对象的实例化过程是在Quartz中进行的，这时候我们将spring的东西注入进来，肯定是行不通的，所以需要这个类
    @Autowired
    private AutowireCapableBeanFactory capableBeanFactory;

    @Override
    protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception {
        //调用父类的方法
        Object jobInstance = super.createJobInstance(bundle);
        //进行注入
        capableBeanFactory.autowireBean(jobInstance);
        return jobInstance;
    }
}

@DisallowConcurrentExecution //作业不并发
@Component
public class HelloWorldJob implements Job{

    @Override
    public void execute(JobExecutionContext arg0) throws JobExecutionException {
        
        System.out.println("欢迎使用yyblog,这是一个定时任务 --小卖铺的老爷爷!"+ DateUtils.fullTime(new Date()));
        
    }

}

public void pauseJob(TaskDO task) throws SchedulerException {
        JobKey jobKey = JobKey.jobKey(task.getJobName(), task.getJobGroup());
        scheduler.pauseJob(jobKey);
    }

public void resumeJob(TaskDO task) throws SchedulerException {
        JobKey jobKey = JobKey.jobKey(task.getJobName(), task.getJobGroup());
        scheduler.resumeJob(jobKey);
    }

public void deleteJob(TaskDO task) throws SchedulerException {
        JobKey jobKey = JobKey.jobKey(task.getJobName(), task.getJobGroup());
        scheduler.deleteJob(jobKey);
    }

public void runJobNow(TaskDO task) throws SchedulerException {
        JobKey jobKey = JobKey.jobKey(task.getJobName(), task.getJobGroup());
        scheduler.triggerJob(jobKey);
    }

public void updateJobCron(TaskDO task) throws SchedulerException {

        TriggerKey triggerKey = TriggerKey.triggerKey(task.getJobName(), task.getJobGroup());

        CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey);

        CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(task.getCronExpression());

        trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build();

        scheduler.rescheduleJob(triggerKey, trigger);
    }