JAVA調度框架Quartz2.2.x-快速入門

前言：鑑於網上的很多quartz教程都過時了，實際代碼都不能用，所以貼上驗證過可用的教程。


一.下載和安裝
   直接下載最新版本（Download the most recent stable release）
   如果是maven項目，將下面依賴添加到pom.xml的dependencies

<dependency>
  <groupId>org.quartz-scheduler</groupId>
  <artifactId>quartz</artifactId>
  <version>2.2.3</version>
</dependency>
<dependency>
  <groupId>org.quartz-scheduler</groupId>
  <artifactId>quartz-jobs</artifactId>
  <version>2.2.3</version>
</dependency>

二. 開始寫代碼

     1.定義了一個實現Job接口的類(HelloJob)

 

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;


public class HelloJob implements Job {

    @Override
    public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
        System.out.println("Hello World.");
    }
}

  2.定義一個類（UsingQuartz）執行調度程序

 

import org.quartz.*;
import org.quartz.impl.StdSchedulerFactory;



public class UsingQuartz {

    public static void main(String[] args) throws Exception {
        SchedulerFactory schedulerFactory = new StdSchedulerFactory();
        Scheduler scheduler = schedulerFactory.getScheduler();
        scheduler.start();

        // define the job and tie it to our HelloJob class
        JobDetail jobDetail = JobBuilder.newJob(HelloJob.class)
                .withIdentity("JOB_KEY", "group1")
                .build();

        // Trigger the job to run now, and then every 10 seconds
        Trigger trigger = TriggerBuilder.newTrigger()
                .withIdentity("TRIGGER_KEY", "group1")
                .startNow()
                .withSchedule(
                        SimpleScheduleBuilder.simpleSchedule()
                                .withIntervalInSeconds(10)
                                .repeatForever()
                )
                .build();

        //Tell quartz to schedule the job using our trigger
        scheduler.scheduleJob(jobDetail, trigger);
    }
}

 

3.在UsingQuartz類上右鍵，運行就能看到控制檯每間隔10秒輸出Hello World.

 

16:45:58.607 [main] INFO org.quartz.impl.StdSchedulerFactory - Using default implementation for ThreadExecutor
16:45:58.613 [main] INFO org.quartz.simpl.SimpleThreadPool - Job execution threads will use class loader of thread: main
16:45:58.637 [main] INFO org.quartz.core.SchedulerSignalerImpl - Initialized Scheduler Signaller of type: class org.quartz.core.SchedulerSignalerImpl
16:45:58.637 [main] INFO org.quartz.core.QuartzScheduler - Quartz Scheduler v.2.2.3 created.
16:45:58.638 [main] INFO org.quartz.simpl.RAMJobStore - RAMJobStore initialized.
16:45:58.640 [main] INFO org.quartz.core.QuartzScheduler - Scheduler meta-data: Quartz Scheduler (v2.2.3) 'DefaultQuartzScheduler' with instanceId 'NON_CLUSTERED'
  Scheduler class: 'org.quartz.core.QuartzScheduler' - running locally.
  NOT STARTED.
  Currently in standby mode.
  Number of jobs executed: 0
  Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 10 threads.
  Using job-store 'org.quartz.simpl.RAMJobStore' - which does not support persistence. and is not clustered.

16:45:58.640 [main] INFO org.quartz.impl.StdSchedulerFactory - Quartz scheduler 'DefaultQuartzScheduler' initialized from default resource file in Quartz package: 'quartz.properties'
16:45:58.640 [main] INFO org.quartz.impl.StdSchedulerFactory - Quartz scheduler version: 2.2.3
16:45:58.640 [main] INFO org.quartz.core.QuartzScheduler - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED started.
16:45:58.643 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.core.QuartzSchedulerThread - batch acquisition of 0 triggers
16:45:58.658 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.core.QuartzSchedulerThread - batch acquisition of 1 triggers
16:45:58.666 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.simpl.PropertySettingJobFactory - Producing instance of Job 'group1.JOB_KEY', class=quartz.HelloJob
16:45:58.669 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.core.QuartzSchedulerThread - batch acquisition of 1 triggers
16:45:58.670 [DefaultQuartzScheduler_Worker-1] DEBUG org.quartz.core.JobRunShell - Calling execute on job group1.JOB_KEY
Hello World.
16:46:08.648 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.simpl.PropertySettingJobFactory - Producing instance of Job 'group1.JOB_KEY', class=quartz.HelloJob
16:46:08.648 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.core.QuartzSchedulerThread - batch acquisition of 1 triggers
16:46:08.648 [DefaultQuartzScheduler_Worker-2] DEBUG org.quartz.core.JobRunShell - Calling execute on job group1.JOB_KEY
Hello World.