Quartz使用-入门使用(java定时任务实现)

Quartz使用-入门使用(java定时任务实现)

注意: 这里使用的是Quartz1.6.5版本(包:quartz-1.6.5.jar)

代码块

测试main函数,例如:

//测试main函数
//QuartzTest.<a href="http://lib.csdn.net/base/17" class='replace_word' title="Java EE知识库" target='_blank' style='color:#df3434; font-weight:bold;'>Java</a>
package quartzPackage;


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

public class QuartzTest {

    /** *//** * @param args */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        SimpleDateFormat DateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
        Date d = new Date();
        String returnstr = DateFormat.format(d);        

        TestJob job = new TestJob();
        String job_name ="11";
        try {
            System.out.println(returnstr+ "【系统启动】");
            QuartzManager.addJob(job_name,job,"0/2 * * * * ?"); //每2秒钟执行一次

// Thread.sleep(10000);
// System.out.println("【修改时间】");
// QuartzManager.modifyJobTime(job_name,"0/10 * * * * ?");
// Thread.sleep(20000);
// System.out.println("【移除定时】");
// QuartzManager.removeJob(job_name);
// Thread.sleep(10000);
// 
// System.out.println("/n【添加定时任务】");
// QuartzManager.addJob(job_name,job,"0/5 * * * * ?");

        }  catch (Exception e) {
            e.printStackTrace();
        }
    }
}

简单的任务管理类:

//简单的任务管理类
//QuartzManager.java

package quartzPackage;

import java.text.ParseException;
import org.quartz.CronTrigger;
import org.quartz.Job;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SchedulerFactory;
import org.quartz.Trigger;
import org.quartz.impl.StdSchedulerFactory;

/** *//** * @Title:Quartz管理类 * * @Description: * * @Copyright: * @author zz 2008-10-8 14:19:01 * @version 1.00.000 * */
public class QuartzManager {
   private static SchedulerFactory sf = new StdSchedulerFactory();
   private static String JOB_GROUP_NAME = "group1";
   private static String TRIGGER_GROUP_NAME = "trigger1";


   /** *//** * 添加一个定时任务,使用默认的任务组名,触发器名,触发器组名 * @param jobName 任务名 * @param job 任务 * @param time 时间设置,参考quartz说明文档 * @throws SchedulerException * @throws ParseException */
   public static void addJob(String jobName,Job job,String time) 
                               throws SchedulerException, ParseException{
       Scheduler sched = sf.getScheduler();
       JobDetail jobDetail = new JobDetail(jobName, JOB_GROUP_NAME, job.getClass());//任务名,任务组,任务执行类
       //触发器
       CronTrigger  trigger = 
            new CronTrigger(jobName, TRIGGER_GROUP_NAME);//触发器名,触发器组
       trigger.setCronExpression(time);//触发器时间设定
       sched.scheduleJob(jobDetail,trigger);
       //启动
       if(!sched.isShutdown())
          sched.start();
   }

   /** *//** * 添加一个定时任务 * @param jobName 任务名 * @param jobGroupName 任务组名 * @param triggerName 触发器名 * @param triggerGroupName 触发器组名 * @param job 任务 * @param time 时间设置,参考quartz说明文档 * @throws SchedulerException * @throws ParseException */
   public static void addJob(String jobName,String jobGroupName,
                             String triggerName,String triggerGroupName,
                             Job job,String time) 
                               throws SchedulerException, ParseException{
       Scheduler sched = sf.getScheduler();
       JobDetail jobDetail = new JobDetail(jobName, jobGroupName, job.getClass());//任务名,任务组,任务执行类
       //触发器
       CronTrigger  trigger = 
            new CronTrigger(triggerName, triggerGroupName);//触发器名,触发器组
       trigger.setCronExpression(time);//触发器时间设定
       sched.scheduleJob(jobDetail,trigger);
       if(!sched.isShutdown())
          sched.start();
   }

   /** *//** * 修改一个任务的触发时间(使用默认的任务组名,触发器名,触发器组名) * @param jobName * @param time * @throws SchedulerException * @throws ParseException */
   public static void modifyJobTime(String jobName,String time) 
                                  throws SchedulerException, ParseException{
       Scheduler sched = sf.getScheduler();
       Trigger trigger =  sched.getTrigger(jobName,TRIGGER_GROUP_NAME);
       if(trigger != null){
           CronTrigger  ct = (CronTrigger)trigger;
           ct.setCronExpression(time);
           sched.resumeTrigger(jobName,TRIGGER_GROUP_NAME);
       }
   }

   /** *//** * 修改一个任务的触发时间 * @param triggerName * @param triggerGroupName * @param time * @throws SchedulerException * @throws ParseException */
   public static void modifyJobTime(String triggerName,String triggerGroupName,
                                    String time) 
                                  throws SchedulerException, ParseException{
       Scheduler sched = sf.getScheduler();
       Trigger trigger =  sched.getTrigger(triggerName,triggerGroupName);
       if(trigger != null){
           CronTrigger  ct = (CronTrigger)trigger;
           //修改时间
           ct.setCronExpression(time);
           //重启触发器
           sched.resumeTrigger(triggerName,triggerGroupName);
       }
   }

   /** *//** * 移除一个任务(使用默认的任务组名,触发器名,触发器组名) * @param jobName * @throws SchedulerException */
   public static void removeJob(String jobName) 
                               throws SchedulerException{
       Scheduler sched = sf.getScheduler();
       sched.pauseTrigger(jobName,TRIGGER_GROUP_NAME);//停止触发器
       sched.unscheduleJob(jobName,TRIGGER_GROUP_NAME);//移除触发器
       sched.deleteJob(jobName,JOB_GROUP_NAME);//删除任务
   }

   /** *//** * 移除一个任务 * @param jobName * @param jobGroupName * @param triggerName * @param triggerGroupName * @throws SchedulerException */
   public static void removeJob(String jobName,String jobGroupName,
                                String triggerName,String triggerGroupName) 
                               throws SchedulerException{
       Scheduler sched = sf.getScheduler();
       sched.pauseTrigger(triggerName,triggerGroupName);//停止触发器
       sched.unscheduleJob(triggerName,triggerGroupName);//移除触发器
       sched.deleteJob(jobName,jobGroupName);//删除任务
   }
}

测试工作类:

//测试工作类
//TestJob.java

package quartzPackage;

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

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

public class TestJob implements Job {
    SimpleDateFormat DateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    Date d = new Date();
    String returnstr = DateFormat.format(d);  

    public void execute(JobExecutionContext arg0) throws JobExecutionException {
        // TODO Auto-generated method stub
        System.out.println(returnstr+"★★★★★★★★★★★");
    }

}

第三方包

通过测试。一个简单任务只需要以下几个包:commons-beanutils.jar、commons-collections.jar、commons-logging.jar、commons-digester.jar、quartz.jar即可

名称 必须/备注 网址
activation.jar 主要是 JavaMail 要用到 http://java.sun.com/products/javabeans/glasgow/jaf.html
commons-beanutils.jar http://jakarta.apache.org/commons/beanutils
commons-collections.jar http://jakarta.apache.org/commons/collections
commons-dbcp-1.1.jar 是,假如用到数据库作为作业存储 http://jakarta.apache.org/commons/dbcp
commons-digester.jar 假如你使用了某些插件,就需要它
commons-logging.jar http://jakarta.apache.org/commons/logging/
commons-pool-1.1.jar http://jakarta.apache.org/commons/pool/
javamail.jar 发送 e-mail 用 http://java.sun.com/products/javamail/
jdbc2_0-stdext.jar 是,假如用到数据库作为作业存储 http://java.sun.com/products/jdbc/
jta.jar 是,假如用到数据库作为作业存储 http://java.sun.com/products/jta/database
quartz.jar Quart 框架核心包
servlet.jar 假如使用了Servlet 容器,但容器中应该存在 http://java.sun.com/products/servlet/
log4j.jar 是,日志 http://logging.apache.org/

你可能感兴趣的:(java,quartz)