SpringBoot2 task scheduler 定時(shí)任務(wù)調(diào)度器四種方式

@Component
@Configurable
@EnableScheduling
public class Task1 {
  private static Log logger = LogFactory.getLog(Task1.class);
  @Scheduled(cron = "0/2 * * * * * ")
  public void execute() {
    logger.info("Task1>>" + new Date());
  }
}

@SpringBootApplication
@ImportResource(value = { "classpath:applicationContext*.xml" })
public class Springboot2TaskApplication {

  public static void main(String[] args) {
    SpringApplication.run(Springboot2TaskApplication.class, args);
  }
}

<context:component-scan base-package="com.chenyingjun.task.schedual"></context:component-scan>
<task:scheduler id="appScheduler" pool-size="2" /> 
<!-- 調(diào)整定時(shí)任務(wù) -->
<task:scheduled-tasks>  
  <task:scheduled ref="task2" method="method2" cron="0/10 * * * * ?"/>
</task:scheduled-tasks>

@Service
public class Task2 {
  private static Log logger = LogFactory.getLog(Task2.class);
  public void method2() {
    logger.info("Task2----method2>>>>" + new Date());
  }
}

<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>2.3.0</version>
</dependency>

@Configuration
public class SchedledConfiguration {

  /**
   * attention:
   * Details：配置定時(shí)任務(wù)
   */
  @Bean(name = "jobDetail")
  public MethodInvokingJobDetailFactoryBean detailFactoryBean(Task3 task) {// TestTask為需要執(zhí)行的任務(wù)
    MethodInvokingJobDetailFactoryBean jobDetail = new MethodInvokingJobDetailFactoryBean();
    /*
     * 是否并發(fā)執(zhí)行
     * 例如每5s執(zhí)行一次任務(wù)，但是當(dāng)前任務(wù)還沒(méi)有執(zhí)行完，就已經(jīng)過(guò)了5s了，
     * 如果此處為true，則下一個(gè)任務(wù)會(huì)執(zhí)行，如果此處為false，則下一個(gè)任務(wù)會(huì)等待上一個(gè)任務(wù)執(zhí)行完后，再開(kāi)始執(zhí)行
     */
    jobDetail.setConcurrent(false);

    // 設(shè)置任務(wù)的名字
    jobDetail.setName("jobDetailName");

    // 設(shè)置任務(wù)的分組，這些屬性都可以存儲(chǔ)在數(shù)據(jù)庫(kù)中，在多任務(wù)的時(shí)候使用
    jobDetail.setGroup("jobDetailGroup");

    /*
     * 為需要執(zhí)行的實(shí)體類(lèi)對(duì)應(yīng)的對(duì)象
     */
    jobDetail.setTargetObject(task);

    /*
     * 通過(guò)這幾個(gè)配置，告訴JobDetailFactoryBean我們需要執(zhí)行定時(shí)執(zhí)行ScheduleTask類(lèi)中的task方法
     */
    jobDetail.setTargetMethod("task");
    return jobDetail;
  }

  /**
   * Details：配置定時(shí)任務(wù)的觸發(fā)器，也就是什么時(shí)候觸發(fā)執(zhí)行定時(shí)任務(wù)
   */
  @Bean(name = "jobTrigger")
  public CronTriggerFactoryBean cronJobTrigger(JobDetail jobDetail) {
    CronTriggerFactoryBean tigger = new CronTriggerFactoryBean();
    tigger.setJobDetail(jobDetail);
    // 初始時(shí)的cron表達(dá)式，可以改成從數(shù)據(jù)庫(kù)中獲取
    tigger.setCronExpression("0/2 * * * * ?");
    // trigger的name
    tigger.setName("tiggerName");
    return tigger;

  }

  /**
   * Details：定義quartz調(diào)度工廠(chǎng)
   */
  @Bean(name = "scheduler")
  public SchedulerFactoryBean schedulerFactory(Trigger trigger) {
    SchedulerFactoryBean bean = new SchedulerFactoryBean();
    // 用于quartz集群,QuartzScheduler 啟動(dòng)時(shí)更新己存在的Job
    bean.setOverwriteExistingJobs(true);
    // 延時(shí)啟動(dòng)，應(yīng)用啟動(dòng)1秒后
    bean.setStartupDelay(1);
    // 注冊(cè)觸發(fā)器
    bean.setTriggers(trigger);
    return bean;
  }
}

@Service
public class Task3 {

  @Resource(name = "jobTrigger")
  private CronTrigger cronTrigger;

  @Resource(name = "scheduler")
  private Scheduler scheduler;

  private static Log logger = LogFactory.getLog(Task3.class);

  public void task() {
    logger.info("Task3---------" + new Date());
  }

  /**
   * 設(shè)置cron并重啟定時(shí)器
   * @param cron cron值
   */
  public void setCron(String cron) {
    try {
      // 表達(dá)式調(diào)度構(gòu)建器
      CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(cron);
      // 按新的cronExpression表達(dá)式重新構(gòu)建trigger
      CronTrigger trigger = (CronTrigger) scheduler.getTrigger(cronTrigger.getKey());
      trigger = trigger.getTriggerBuilder().withIdentity(cronTrigger.getKey())
          .withSchedule(scheduleBuilder).build();
      // 按新的trigger重新設(shè)置job執(zhí)行
      scheduler.rescheduleJob(cronTrigger.getKey(), trigger);
    } catch (SchedulerException e) {
      logger.info("cron表達(dá)式錯(cuò)誤");
    }
  }
}

public class Task4 implements Runnable {

  private ThreadPoolTaskScheduler threadPoolTaskScheduler;

  private static Log logger = LogFactory.getLog(Task4.class);

  @Override
  public void run() {
    logger.info("Task4================" + new Date());
  }

  /**
   * 設(shè)置cron并啟動(dòng)
   * @param cronExp cron值
   */
  public void reStart(String cronExp) {
    if (null != this.threadPoolTaskScheduler) {
      ScheduledExecutorService scheduledExecutorService = this.threadPoolTaskScheduler.getScheduledExecutor();
      if (!scheduledExecutorService.isShutdown()) {
        scheduledExecutorService.shutdownNow();
      }

      this.threadPoolTaskScheduler.destroy();
    }

    if (null != cronExp && cronExp.trim().length() > 0) {
      this.threadPoolTaskScheduler = new ThreadPoolTaskScheduler();
      this.threadPoolTaskScheduler.setThreadNamePrefix("task4");
      this.threadPoolTaskScheduler.initialize();
      this.threadPoolTaskScheduler.schedule(this, new CronTrigger(cronExp));
    }
  }
}

/**
   * 初始化task4
   * 這里的代碼不應(yīng)該寫(xiě)在rest層上， 應(yīng)該寫(xiě)在service層上
   */
  @PostConstruct
  private void initTask4() {
    //初始化task4任務(wù)調(diào)度器cron，可以從數(shù)據(jù)庫(kù)中查詢(xún)到cron值
    setTask4Cron("0/3 * * * * ?");
  }

  /**
   * 改變task4的cron
   * @param cron cron值
   * @return 成功標(biāo)志
   */
  @RequestMapping(value = { "/setTask4Cron" }, method = RequestMethod.GET)
  @ResponseBody
  public String setTask4Cron(String cron) {
    if (null == task4) {
      task4 = new Task4();
    }

    task4.reStart(cron);
    return "success";
  }