【Quartz】JavaWeb整合Quartz 实现动态调度并

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Written In The Font

需要:
1.导入WEB-INF/lib/quartz-2.2.1.jar
2.然后数据库建相关表格,可以去quartz-2.2.1\docs\dbTables目录下找到对应的数据库表格.(我这边Mysql , 导入 tables_mysql.sql 即可)
3.配置quartz.properties

#============================================================================# Configure Main Scheduler Properties  #============================================================================org.quartz.scheduler.instanceName: wmuitpSchedulerorg.quartz.scheduler.instanceId: AUTOorg.quartz.scheduler.skipUpdateCheck: true#============================================================================# Configure ThreadPool  #============================================================================org.quartz.threadPool.class: org.quartz.simpl.SimpleThreadPoolorg.quartz.threadPool.threadCount: 10org.quartz.threadPool.threadPriority: 5org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = true  #============================================================================# Configure JobStore  #============================================================================org.quartz.jobStore.misfireThreshold: 60000org.quartz.jobStore.class=org.quartz.impl.jdbcjobstore.JobStoreTXorg.quartz.jobStore.driverDelegateClass=org.quartz.impl.jdbcjobstore.StdJDBCDelegateorg.quartz.jobStore.useProperties=falseorg.quartz.jobStore.dataSource=myDSorg.quartz.jobStore.tablePrefix=qrtz_org.quartz.jobStore.isClustered=true#============================================================================# Configure Datasources  #============================================================================org.quartz.dataSource.myDS.driver: com.mysql.jdbc.Driverorg.quartz.dataSource.myDS.URL: jdbc:mysql://localhost:3307/itporg.quartz.dataSource.myDS.user: rootorg.quartz.dataSource.myDS.password: 123456org.quartz.dataSource.myDS.maxConnections: 5org.quartz.dataSource.myDS.validationQuery: select 0

基本步骤:
1.web.xml注册监听器ScheduleStartListener
2.监听器类sedion.jeffli.wmuitp.listener.ScheduleStartListener实现
3.测试案例第一步: Job 接口实现类JobTest
4.测试案例第二步:QuartzTest

web.xml注册监听器ScheduleStartListener

注册quartz监听器,监听项目是否启动或者重启.保证项目启动或重启时,所有任务会被重新安排到任务调度中.
web.xml添加一个Listener:

<!-- quartz监听器 -->  <listener>    <listener-class>sedion.jeffli.wmuitp.listener.ScheduleStartListener</listener-class></listener>

监听器类sedion.jeffli.wmuitp.listener.ScheduleStartListener实现

监听器类主要是实现recovery各个任务,重新恢复在triggerGroups组中所有的触发器,按新的trigger重新设置job执行.顺便说下,这个异常自定义(不需要删除即可): sedion.jeffli.wmuitp.exception.QuartzException;

package sedion.jeffli.wmuitp.listener;import java.util.List;import javax.servlet.ServletContextEvent;import javax.servlet.ServletContextListener;import org.quartz.Scheduler;import org.quartz.SchedulerFactory;import org.quartz.Trigger;import org.quartz.TriggerKey;import org.quartz.impl.StdSchedulerFactory;import sedion.jeffli.wmuitp.exception.QuartzException;public class ScheduleStartListener implements ServletContextListener{    public void contextDestroyed(ServletContextEvent sce)     {            }    public void contextInitialized(ServletContextEvent sce)     {        try         {            recovery();        }         catch (Exception e)        {            throw new QuartzException(" ScheduleStartListener contextInitialized ERROR!!",e);        }    }        public void recovery()     {                Scheduler scheduler = null;                try {                        SchedulerFactory schedulerFactory = new StdSchedulerFactory();            scheduler = schedulerFactory.getScheduler();//可以通过SchedulerFactory创建一个Scheduler实例            List<String> triggerGroups = scheduler.getTriggerGroupNames();//获取调度器中所有的触发器组            System.out.println("调度器中所有的触发器组 size():"+triggerGroups.size());                        if(triggerGroups != null && triggerGroups.size() != 0)//重新恢复在triggerGroups组中所有的触发器            {                for (int i = 0; i < triggerGroups.size(); i++)                 {                        TriggerKey triggerKey = TriggerKey.triggerKey(triggerGroups.get(i), triggerGroups.get(i));                        System.out.println("triggerKey:"+triggerKey);                                                Trigger tg = scheduler.getTrigger(triggerKey);//获取trigger                        System.out.println(triggerKey+" -> 执行时间 :"+tg.getNextFireTime());                                                scheduler.rescheduleJob(triggerKey, tg);//按新的trigger重新设置job执行                }            }                        scheduler.start();                    }         catch (Exception e)         {            throw new QuartzException("ScheduleStartListener  recovery() Error!", e);        }    }}

测试案例第一步: Job 接口实现类JobTest

顾名思义,用于自定义任务,方法的实现.你可以在其中写入任意你想要在那个点上干的事情(操作数据库,前台显示等).在下面那处地方写入你想要写的:System.out.println("添入需要加入任务的具体操作"); .顺便说下,这个异常自定义(不需要删除即可):

package test.quartz;import org.quartz.Job;import org.quartz.JobDataMap;import org.quartz.JobExecutionContext;import org.quartz.JobExecutionException;import org.quartz.JobKey;import org.quartz.Scheduler;import org.quartz.SchedulerException;import org.quartz.SchedulerFactory;import org.quartz.TriggerKey;import org.quartz.impl.StdSchedulerFactory;import sedion.jeffli.wmuitp.exception.QuartzException;public class JobTest implements Job{        public JobTest() {}          public void execute(JobExecutionContext context)throws JobExecutionException    {                  JobDataMap data = context.getJobDetail().getJobDataMap();        System.out.println("data.testId : "+data.getInt("testId")); //不需要可删除                try        {            System.out.println("添入需要加入任务的具体操作");        }        catch (Exception e)         {            throw new QuartzException("JobTest execute() ERROR !!", e);        }    }          public static void removeJob(JobKey jobKey, TriggerKey tiKey)throws SchedulerException    {                 SchedulerFactory sf     = new StdSchedulerFactory();        Scheduler          sched     = sf.getScheduler();                  sched.pauseTrigger(tiKey);            //停止触发器          sched.unscheduleJob(tiKey);            //移除触发器          sched.deleteJob(jobKey);            //删除任务              } }

测试案例第二步:QuartzTest

顾名思义,用于实现,检验.可以通过SchedulerFactory创建一个Scheduler实例,把触发器在集群节点实例命名的组只是为了区分（伐木）从什么地方定问调度重新执行此作业，如果它是正在进行时调度下去.

package test.quartz;import static org.quartz.JobBuilder.newJob;import static org.quartz.TriggerBuilder.newTrigger;import java.util.Date;import org.quartz.JobDetail;import org.quartz.Scheduler;import org.quartz.SchedulerFactory;import org.quartz.SimpleTrigger;import org.quartz.impl.StdSchedulerFactory;public class QuartzTest{    public void run(String date, int id)throws Exception     {                SchedulerFactory schedulerFactory = new StdSchedulerFactory();        Scheduler scheduler = schedulerFactory.getScheduler();//可以通过SchedulerFactory创建一个Scheduler实例                //设置工作详情        JobDetail job = newJob(JobTest.class)             .withIdentity("job_"+id, "test"+id)         // (String name, String group)把触发器在集群节点实例命名的组只是为了区分（伐木）从什么地方定问调度重新执行此作业，如果它是正在进行时调度下去...            .requestRecovery()                                         .build();               job.getJobDataMap().put("testId", id);        //设置存储参数(不需要可删除)                       Date startDate = FormatDate.stringToDateAll(date);//Date转String        //设置触发器        SimpleTrigger trigger = (SimpleTrigger) newTrigger()                .withIdentity("overdue"+id, "overdue"+id)//withIdentity("trigger", "group")                .startAt(startDate)                .build();                scheduler.scheduleJob(job, trigger);        scheduler.start();        System.out.println("------- Start Scheduler ----------------");    }        public static void main(String[] args) throws Exception     {        QuartzTest quartzOverdue = new QuartzTest();        quartzOverdue.run("2014-07-02 00:30:00",666);//666,随便的吉祥数字    }}

这边,项目tomcat启动.这边我的主机时间是:

然后我们运行:

public static void main(String[] args) throws Exception{        QuartzTest quartzOverdue = new QuartzTest();        quartzOverdue.run("2014-07-02 00:30:00",666);//666,随便的吉祥数字    }

看控制台:

先输出

------- Start Scheduler ----------------

然后时间到了

添入需要加入任务的具体操作

然后测试 quartz的持久化.(持久化测试就是先开启任务,然后中间断开重启服务器),之间你会发现控制台:

今天我重写了下,:

public static void main(String[] args) throws Exception     {        QuartzTest quartzOverdue = new QuartzTest();        quartzOverdue.run("2014-07-02 10:00:00",6666);    }调度器中所有的触发器组 size():1triggerKey:test6666.test6666test6666.test6666 -> 执行时间 :Wed Jul 02 10:00:00 CST 2014

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