第一个quartz程序

quartz使用

准备工作
    
    建立Maven项目工程
    
    引入quartz jar包
    
编写第一个quartz任务
    
    让任务每隔两秒钟打印一次helloword

 

HelloJob.java

import java.text.SimpleDateFormat;
import java.util.Date;

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

public class HelloJob implements Job{

  @Override
  public void execute(JobExecutionContext arg0) throws JobExecutionException {
    //打印当前的执行时间 格式为2017-01-01 00:00:00
    Date date = new Date();
    SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    System.out.println("Current Exec Time Is: " + sf.format(date));
    // 编写具体的业务逻辑
    System.out.println("hello quartz!");
  }

}

HelloScheduler.java

import java.text.SimpleDateFormat;
import java.util.Date;

import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SchedulerFactory;
import org.quartz.SimpleScheduleBuilder;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.impl.StdSchedulerFactory;

public class HelloScheduler {
  
  public static void main(String[] args) throws SchedulerException {
    //创建一个JobDetail实例，将该实例与HelloJob Class绑定
    JobDetail jobDetail = JobBuilder.newJob(HelloJob.class)
        .withIdentity("myJob", "group1").build();
    
    //创建一个Trigger实例，定义该job立即执行，并且每隔两秒钟执行一次
    Trigger trigger = TriggerBuilder.newTrigger().withIdentity("myTrigger", "group1")
        .startNow().withSchedule(
          SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(2).repeatForever()
        )
        .build();
    
    //创建Scheduler实例
    SchedulerFactory sfact = new StdSchedulerFactory();
    Scheduler scheduler = sfact.getScheduler();
    scheduler.start();
    //打印当前的时间 格式为2017-01-01 00:00:00
    Date date = new Date();
    SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    System.out.println("Current Time Is: " + sf.format(date));
    scheduler.scheduleJob(jobDetail,trigger); 
    
  }
}