Quartz_JAVA_编程开发_程序员俱乐部

Quartz
=========

1
官网:
http://quartz-scheduler.org/

下载地址:
http://d2zwv9pap9ylyd.cloudfront.net/quartz-2.1.0.tar.gz

2
简介:
开源免费, Apache 2.0 license.
创建简单或复杂的作业调度服务, 整合或单独使用于JAVA应用.支持JTA事务和集群.

3
使用场景:
传递工作流
数据库系统维护
提醒服务
...

4
Quartz JAR 文件
quartz-all-xxx.jar  全特性包

依赖包:
lib/*.jar

5
Properties 文件 quartz.properties

http://quartz-scheduler.org/documentation/quartz-2.x/configuration/

6
示例:
Quartz.java

package cn.bisoft.component.quartz;

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

import cn.bisoft.component.quartz.job.HelloJob;

/**
 * Scheduler - 调度器, 用于调度Job.
 * Job - 调度任务.
 * JobDetail - 创建Job.
 * Trigger - 触发运行规则.
 * JobBuilder - 创建JobDetail
 * TriggerBuilder - 创建Trigger.
 * ScheduleBuilder - 创建Trigger规则.
 * 
 */
public class Quartz
{

    public static void main(String[] args)
    {
        usage();
    }

    public static void usage()
    {
        try
        {
            /*
             * 1. 创建Scheduler, 通过 JNDI或 StdSchedulerFactory, 不推荐使用DirectSchedulerFactory.
             * Scheduler 四种状态: stand-by, start, pause, shutdown.
             */
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();

            // 2. Start Scheduler
            scheduler.start();

            // 3. 定义Job
            JobDetail job = JobBuilder.newJob(HelloJob.class).withIdentity("job1", "group1").build();

            // 4. 定义Trigger, 每3秒执行一次
            Trigger trigger = TriggerBuilder.newTrigger().withIdentity("trigger1", "group1").startNow()
                    .withSchedule(SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(3).repeatForever())
                    .build();

            // 5. 绑定Job 和 Trigger
            scheduler.scheduleJob(job, trigger);

            // 6. Shutdown Scheduler
            // scheduler.shutdown();

        }
        catch (SchedulerException se)
        {
            se.printStackTrace();
        }
    }

}
 

HelloJob.java

package cn.bisoft.component.quartz.job;

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

@DisallowConcurrentExecution
@PersistJobDataAfterExecution
public class HelloJob implements Job
{

    public HelloJob()
    {
    }

    public void execute(JobExecutionContext context) throws JobExecutionException
    {
        System.err.println("Hello!  HelloJob is executing.");
    }
} 

log4j.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">

  <appender name="default" class="org.apache.log4j.ConsoleAppender">
    <param name="target" value="System.out"/>
    <layout class="org.apache.log4j.PatternLayout">
      <param name="ConversionPattern" value="[%p] %d{yyyy-MM-dd hh:mm:ss.SSS} %t [%c]%n%m%n%n"/>
    </layout>
  </appender>


 <logger name="org.quartz">
   <level value="debug" />
 </logger>

  <root>
    <level value="debug" />
    <appender-ref ref="default" />
  </root>

  
</log4j:configuration>

quartz.properties

org.quartz.scheduler.instanceName = MyScheduler
org.quartz.threadPool.threadCount = 3
org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore