spring动态定时器封装

先spring的配置还是要得，不过只需要一个bean,配置如下：

<bean id="schedulerFactory"  class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
</bean>

然后任务封装类，需要进行添加的任务可以new这个类的一个对象设置好属性就好了：

public class CustomJob {
	public static final int JS_ENABLED = 0; // 任务启用状态
	public static final int JS_DISABLED = 1; // 任务禁用状态
	public static final int JS_DELETE = 2; // 任务已删除状态

	private String jobId; // 任务的Id，一般为所定义Bean的ID
	private String jobName; // 任务的描述
	private String jobGroup; // 任务所属组的名称
	private int jobStatus; // 任务的状态，0：启用；1：禁用；2：已删除
	private String cronExpression; // 定时任务运行时间表达式
	private String memos; // 任务描述
	private Class<?> stateFulljobExecuteClass;//同步的执行类，需要从StatefulMethodInvokingJob继续
	private Class<?> jobExecuteClass;//异步的执行类，需要从MethodInvokingJob继续
        /**
	 * 得到该job的Trigger名字
	 * @return
	 */
	public String getTriggerName() {
		return this.getJobId() + "Trigger";
	}
        /*私有字段的get，set省略*/
}

然后任务治理器封装类，这个类是对任务的同一治理功能，有增，删，查，改

/**
 * 
 */
package org.liyaojin.quartz.dynamic;

import org.quartz.CronTrigger;
import org.quartz.JobDataMap;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.Trigger;
import org.quartz.impl.StdScheduler;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @author jl_love
 * 
 *         2011-10-14 豁达，坚强，勤奋
 */
public class QuartzManager {
	private static Scheduler scheduler;

	static {
		ApplicationContext context = new ClassPathXmlApplicationContext(
				"quartzDynamic.xml");
		scheduler = (StdScheduler) context.getBean("schedulerFactory");
	}

	/**
	 * 启动一个自定义的job
	 * 
	 * @param schedulingJob
	 *            自定义的job
	 * @param paramsMap
	 *            传递给job执行的数据
	 * @param isStateFull
	 *            是否是一个同步定时任务，true：同步，false：异步
	 * @return 成功则返回true，否则返回false
	 */
	public static boolean enableCronSchedule(CustomJob schedulingJob,
			JobDataMap paramsMap, boolean isStateFull) {
		if (schedulingJob == null) {
			return false;
		}
		try {
			CronTrigger trigger = (CronTrigger) scheduler
					.getTrigger(schedulingJob.getTriggerName(),
							schedulingJob.getJobGroup());
			if (null == trigger) {// 假如不存在该trigger则创建一个
				JobDetail jobDetail = null;
				if (isStateFull) {
					jobDetail = new JobDetail(schedulingJob.getJobId(),
							schedulingJob.getJobGroup(),
							schedulingJob.getStateFulljobExecuteClass());
				} else {
					jobDetail = new JobDetail(schedulingJob.getJobId(),
							schedulingJob.getJobGroup(),
							schedulingJob.getJobExecuteClass());
				}
				jobDetail.setJobDataMap(paramsMap);
				trigger = new CronTrigger(schedulingJob.getTriggerName(),
						schedulingJob.getJobGroup(),
						schedulingJob.getCronExpression());
				scheduler.scheduleJob(jobDetail, trigger);
			} else {
				// Trigger已存在，那么更新相应的定时设置
				trigger.setCronExpression(schedulingJob.getCronExpression());
				scheduler.rescheduleJob(trigger.getName(), trigger.getGroup(),
						trigger);
			}
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
		return true;
	}

	/**
	 * 禁用一个job
	 * 
	 * @param jobId
	 *            需要被禁用的job的ID
	 * @param jobGroupId
	 *            需要被警用的jobGroupId
	 * @return 成功则返回true，否则返回false
	 */
	public static boolean disableSchedule(String jobId, String jobGroupId) {
		if (jobId.equals("") || jobGroupId.equals("")) {
			return false;
		}
		try {
			Trigger trigger = getJobTrigger(jobId, jobGroupId);
			if (null != trigger) {
				scheduler.deleteJob(jobId, jobGroupId);
			}
		} catch (SchedulerException e) {
			e.printStackTrace();
			return false;
		}
		return true;
	}

	/**
	 * 得到job的具体信息
	 * 
	 * @param jobId
	 *            job的ID
	 * @param jobGroupId
	 *            job的组ID
	 * @return job的具体信息,假如job不存在则返回null
	 */
	public static JobDetail getJobDetail(String jobId, String jobGroupId) {
		if (jobId.equals("") || jobGroupId.equals("") || null == jobId
				|| jobGroupId == null) {
			return null;
		}
		try {
			return scheduler.getJobDetail(jobId, jobGroupId);
		} catch (SchedulerException e) {
			e.printStackTrace();
			return null;
		}
	}

	/**
	 * 得到job对应的Trigger
	 * 
	 * @param jobId
	 *            job的ID
	 * @param jobGroupId
	 *            job的组ID
	 * @return job的Trigger,假如Trigger不存在则返回null
	 */
	public static Trigger getJobTrigger(String jobId, String jobGroupId) {
		if (jobId.equals("") || jobGroupId.equals("") || null == jobId
				|| jobGroupId == null) {
			return null;
		}
		try {
			return scheduler.getTrigger(jobId + "Trigger", jobGroupId);
		} catch (SchedulerException e) {
			e.printStackTrace();
			return null;
		}
	}

}

最后给出测试代码：
1：任务类

   /**
 * 
 */
package org.liyaojin.quartz.dynamic;

import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean.StatefulMethodInvokingJob;
import org.springframework.scheduling.quartz.QuartzJobBean;

/**
 * @author jl_love
 *
 * 2011-10-14
 * 豁达，坚强，勤奋
 */
public class QuartzJobOne extends StatefulMethodInvokingJob {
	private static int i = 0;
	private int j = 0; /*说明每次执行都是new了一个新的执行类，具有线程安全性*/
	/* (non-Javadoc)
	 * @see org.springframework.scheduling.quartz.QuartzJobBean#executeInternal(org.quartz.JobExecutionContext)
	 */
	@Override
	protected void executeInternal(JobExecutionContext context)
			throws JobExecutionException {
		j++;/*说明每次执行都是new了一个新的执行类，具有线程安全性*/
		i++;
		System.out.println("j====>" + j);/*说明每次执行都是new了一个新的执行类，具有线程安全性*/
		System.out.println("这是我得第" + i + "次执行");
		System.out.println("my name is QuartzJobOne");
		System.out.println(context.getJobDetail().getJobDataMap().get("p2"));/*拿到传进的数据*/
		if(i == 3){
			System.out.println("我只执行三次.....");
			QuartzManager.disableSchedule("job1","job1_group");
		}
	}
}

测试main方法：

/**
 * 
 */
package org.liyaojin.quartz.dynamic;

import java.util.ArrayList;

import org.quartz.JobDataMap;

/**
 * @author jl_love
 *
 * 2011-10-14
 * 豁达，坚强，勤奋
 */
public class QuartzManagerTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		CustomJob job = new CustomJob();
		job.setJobId("job1");
		job.setJobGroup("job1_group");
		job.setJobName("第一个测试定时器");
		job.setMemos("我是第一个测试定时器的描述");
		job.setCronExpression("0/5 * * * * ?");//每五秒执行一次
		job.setStateFulljobExecuteClass(QuartzJobOne.class);
		
		JobDataMap paramsMap = new JobDataMap();
		ArrayList<String> paramList = new ArrayList<String>();
		paramList.add("one");
		paramList.add("two");
		paramList.add("three");
		
		paramsMap.put("p1","p1");
		paramsMap.put("p2",paramList);
		QuartzManager.enableCronSchedule(job, paramsMap, true);
	}

}

具体原理我就未几说了，重在实用。实在也没什么技术含量，主要就是调用quartz的api同时利用了spring对quartz的封装。只是为了方便自己，也为了方便大家。