QUARTZ入門Demo

quartz下載下傳位址：http://www.quartz-scheduler.org/downloads/

package quartz.example1;

import static org.quartz.DateBuilder.evenMinuteDate;
import static org.quartz.DateBuilder.evenSecondDateAfterNow;
import static org.quartz.JobBuilder.newJob;
import static org.quartz.SimpleScheduleBuilder.simpleSchedule;
import static org.quartz.TriggerBuilder.newTrigger;

import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.Trigger;
import org.quartz.impl.StdSchedulerFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Date;

/**
 * This Example will demonstrate how to start and shutdown the Quartz scheduler and how to schedule a job to run in
 * Quartz.
 * 
 * @author Bill Kratzer
 */
public class SimpleExample {

  public void run() throws Exception {
    // 1、建立 Scheduler的工廠
    SchedulerFactory sf = new StdSchedulerFactory();
    //2、從工廠中擷取排程器
    Scheduler sched = sf.getScheduler();
    // 3、建立JobDetail
    JobDetail job = newJob(HelloJob.class).withIdentity("job1", "group1").build();
    // 時間
    Date runTime = evenSecondDateAfterNow();
    // 4、觸發條件
    //Trigger trigger = newTrigger().withIdentity("trigger1", "group1").startAt(runTime).build();
    Trigger trigger  = newTrigger().withIdentity("trigger1", "group1").startAt(runTime)
        .withSchedule(simpleSchedule().withIntervalInSeconds(5).withRepeatCount(3)).build();
    // 5、注冊任務和觸發條件
    sched.scheduleJob(job, trigger);

    // 6、啟動
    sched.start();

  }

  public static void main(String[] args) throws Exception {

    SimpleExample example = new SimpleExample();
    example.run();

  }

}
           

package quartz.example1;

import java.util.Date;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

/**
 * <p>
 * This is just a simple job that says "Hello" to the world.
 * </p>
 * 
 * @author Bill Kratzer
 */
public class HelloJob implements Job {

    private static Logger _log = LoggerFactory.getLogger(HelloJob.class);

    /**
     * <p>
     * Empty constructor for job initilization
     * </p>
     * <p>
     * Quartz requires a public empty constructor so that the
     * scheduler can instantiate the class whenever it needs.
     * </p>
     */
    public HelloJob() {
    }

    /**
     * <p>
     * Called by the <code>{@link org.quartz.Scheduler}</code> when a
     * <code>{@link org.quartz.Trigger}</code> fires that is associated with
     * the <code>Job</code>.
     * </p>
     * 
     * @throws JobExecutionException
     *             if there is an exception while executing the job.
     */
    public void execute(JobExecutionContext context)
        throws JobExecutionException {

        // Say Hello to the World and display the date/time
        _log.info("Hello World! - " + new Date());
    }

}