Quartz入门案例

Quartz依赖的jar包，pom如下：

<dependency>
    <groupId>org.quartz-scheduler</groupId>
    <artifactId>quartz</artifactId>
    <version>2.2.1</version>
</dependency>
<dependency>
    <groupId>org.quartz-scheduler</groupId>
    <artifactId>quartz-jobs</artifactId>
    <version>2.2.1</version>
</dependency>

Java代码程序入口如下如下：

package com.test.quartz;

import java.util.Date;

import org.quartz.CronScheduleBuilder;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.impl.StdSchedulerFactory;


/**
 * 任务调度入口类
 * @author vince
 * @version 1.0
 */
public class ScheduleEntrance {
    
    //定时任务启动入口
    public static void main(String[] args) {
        try {
            
            //创建scheduler
            Scheduler scheduler = new StdSchedulerFactory().getScheduler();
            
            //当前时间
            long time=  System.currentTimeMillis() + 3 * 1000L; //几秒后启动任务
            Date startTime = new Date(time);
            
            //创建一个Trigger
            Trigger trigger = TriggerBuilder.newTrigger()
                    .withDescription("This is a DS trigger.")
                    .withIdentity("DSTrigger", "DSTriggerGroup")
                    .startAt(startTime)
                    .withSchedule(CronScheduleBuilder.cronSchedule("*/5 * * * * ?"))
                    .build();
            
            //定义一个job
            JobDetail jobDetail = JobBuilder.newJob(DSJob.class)
                    .withDescription("This is a DS job.")
                    .withIdentity("DSJob", "DSGroup")
                    .build();
            
            //注册任务和定时器
            scheduler.scheduleJob(jobDetail, trigger);
            
            //启动调度器
            scheduler.start();
            
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
}

Job类如下：

package com.test.quartz;


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


/**
 * 数据同步任务类
 * @author vince
 * @version 1.0
 */
public class DSJob implements Job{
    
    @Override
    public void execute(JobExecutionContext arg0) throws JobExecutionException {
        
        System.out.println("------- Hello Quartz ! ------");
        
    }

}

执行结果：