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Quartz 在 Spring 中如何动态配置时间

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转自: http://www.iteye.com/topic/399980

 

在项目中有一个需求,需要灵活配置调度任务时间,并能自由启动或停止调度。
有关调度的实现我就第一就想到了Quartz这个开源调度组件,因为很多项目使用过,Spring结合Quartz静态配置调度任务时间,非常 easy。比如:每天凌晨几点定时运行一个程序,这只要在工程中的spring配置文件中配置好spring整合quartz的几个属性就好。

Spring配置文件

<bean id="jobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
  <property name="targetObject" ref="simpleService" />
  <property name="targetMethod" value="test" />
</bean>

<bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
  <property name="jobDetail" ref="jobDetail" />
  <property name="cronExpression" value="0 0/50 * ? * * *" />
</bean>

<bean  id="schedulerTrigger" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
  <property name="triggers">
    <list>
      <ref bean="cronTrigger"/>     
    </list>
  </property>
</bean> 

 这种配置就是对quartz的一种简单的使用了,调度任务会在spring启动的时候加载到内存中,按照cronTrigger中定义的 cronExpression定义的时间按时触发调度任务。但是这是quartz使用“内存”方式的一种配置,也比较常见,当然对于不使用spring的 项目,也可以单独整合quartz。方法也比较简单,可以从quartz的doc中找到配置方式,或者看一下《Quartz Job Scheduling Framework 》。

但是对于想持久化调度任务的状态,并且灵活调整调度时间的方式来说,上面的内存方式就不能满足要求了,正如本文开始我遇到的情况,需要采用数据库 方式集成 Quartz,这部分集成其实在《Quartz Job Scheduling Framework 》中也有较为详细的介绍,当然doc文档中也有,但是缺乏和spring集成的实例。

一、需要构建Quartz数据库表

建表脚本在Quartz发行包的docs\dbTables目录,里面有各种数据库建表脚本,我采用的 Quartz 1.6.5版本,总共12张表,不同版本,表个数可能不同。我用mysql数据库,执行了Quartz发行包的docs\dbTables \tables_mysql_innodb.sql建表。

 

二、建立java project,完成后目录如下

 

三、配置数据库连接池
配置jdbc.properties文件

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/quartz?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true
jdbc.username=root
jdbc.password=kfs
cpool.checkoutTimeout=5000
cpool.minPoolSize=10
cpool.maxPoolSize=25
cpool.maxIdleTime=7200
cpool.acquireIncrement=5
cpool.autoCommitOnClose=true 

 配置applicationContext.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
     xmlns:jee="http://www.springframework.org/schema/jee"
    xsi:schemaLocation="
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
     http://www.springframework.org/schema/jee
       http://www.springframework.org/schema/jee/spring-jee-2.5.xsd"  >
 
   <context:component-scan base-package="com.sundoctor"/>

<!-- 属性文件读入 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
  <property name="locations">
    <list>
      <value>classpath:jdbc.properties</value>
    </list>
  </property>
</bean>

<!-- 数据源定义,使用c3p0 连接池 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
  <property name="driverClass" value="${jdbc.driverClassName}" />
  <property name="jdbcUrl" value="${jdbc.url}" />
  <property name="user" value="${jdbc.username}" /> 
  <property name="password" value="${jdbc.password}" />
  <property name="initialPoolSize" value="${cpool.minPoolSize}"/>
  <property name="minPoolSize" value="${cpool.minPoolSize}" />
  <property name="maxPoolSize" value="${cpool.maxPoolSize}" />
  <property name="acquireIncrement" value="${cpool.acquireIncrement}" />
   <property name="maxIdleTime" value="${cpool.maxIdleTime}"/>  
</bean>

</beans> 

 这里只是配置了数据连接池,我使用c3p0 连接池,还没有涉及到Quartx有关配置,下面且听我慢慢道来。

 

四、实现动态定时任务
  什么是动态定时任务:是由客户制定生成的,服务端只知道该去执行什么任务,但任务的定时是不确定的(是由客户制定)。
这样总不能修改配置文件每定制个定时任务就增加一个trigger吧,即便允许客户修改配置文件,但总需要重新启动web服务啊,研究了下Quartz在Spring中的动态定时,发现

<bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean" >
         <property name="jobDetail" ref="schedulerJobDetail"/>
         <property name="cronExpression">
             <value>0/10 * * * * ?</value>
         </property> 

 中cronExpression 是关键,如果可以动态设置cronExpression 的 值,就可以顺利解决问题了。这样我们就不能直接使用 org.springframework.scheduling.quartz.CronTriggerBean,需要自己实现一个动态调度服务类,在其 中构建CronTrigger或SimpleTrigger,动态配置时间。
动态调度服务接口:

package com.sundoctor.quartz.service;

import java.util.Date;

import org.quartz.CronExpression;

public interface SchedulerService {
	/**
	 * 根据 Quartz Cron Expression 调试任务
	 * @param cronExpression  Quartz Cron 表达式,如 "0/10 * * ? * * *"等
	 */
	void schedule(String cronExpression);
	
	/**
	 * 根据 Quartz Cron Expression 调试任务
	 * @param name  Quartz CronTrigger名称
	 * @param cronExpression Quartz Cron 表达式,如 "0/10 * * ? * * *"等
	 */
	void schedule(String name,String cronExpression);
	
	/**
	 * 根据 Quartz Cron Expression 调试任务
	 * @param cronExpression Quartz CronExpression
	 */
	void schedule(CronExpression cronExpression);
	
	/**
	 * 根据 Quartz Cron Expression 调试任务
	 * @param name Quartz CronTrigger名称
	 * @param cronExpression Quartz CronExpression
	 */
	void schedule(String name,CronExpression cronExpression);
	
	/**
	 * 在startTime时执行调试一次
	 * @param startTime 调度开始时间
	 */
	void schedule(Date startTime);	
	
	/**
	 * 在startTime时执行调试一次
	 * @param name Quartz SimpleTrigger 名称
	 * @param startTime 调度开始时间
	 */
	void schedule(String name,Date startTime);
	
	/**
	 * 在startTime时执行调试,endTime结束执行调度
	 * @param startTime 调度开始时间
	 * @param endTime 调度结束时间
	 */
	void schedule(Date startTime,Date endTime);	
	
	/**
	 * 在startTime时执行调试,endTime结束执行调度
	 * @param name Quartz SimpleTrigger 名称
	 * @param startTime 调度开始时间
	 * @param endTime 调度结束时间
	 */
	void schedule(String name,Date startTime,Date endTime);
	
	/**
	 * 在startTime时执行调试,endTime结束执行调度,重复执行repeatCount次
	 * @param startTime 调度开始时间
	 * @param endTime 调度结束时间
	 * @param repeatCount 重复执行次数
	 */
	void schedule(Date startTime,Date endTime,int repeatCount);	
	
	/**
	 * 在startTime时执行调试,endTime结束执行调度,重复执行repeatCount次
	 * @param name Quartz SimpleTrigger 名称
	 * @param startTime 调度开始时间
	 * @param endTime 调度结束时间
	 * @param repeatCount 重复执行次数
	 */
	void schedule(String name,Date startTime,Date endTime,int repeatCount);
	
	/**
	 * 在startTime时执行调试,endTime结束执行调度,重复执行repeatCount次,每隔repeatInterval秒执行一次
	 * @param startTime 调度开始时间
	 * @param endTime 调度结束时间
	 * @param repeatCount 重复执行次数
	 * @param repeatInterval 执行时间隔间
	 */
	void schedule(Date startTime,Date endTime,int repeatCount,long repeatInterval) ;
	
	/**
	 * 在startTime时执行调试,endTime结束执行调度,重复执行repeatCount次,每隔repeatInterval秒执行一次
	 * @param name Quartz SimpleTrigger 名称
	 * @param startTime 调度开始时间
	 * @param endTime 调度结束时间
	 * @param repeatCount 重复执行次数
	 * @param repeatInterval 执行时间隔间
	 */
	void schedule(String name,Date startTime,Date endTime,int repeatCount,long repeatInterval);
}

 动态调度服务实现类:

package com.sundoctor.quartz.service;

import java.text.ParseException;
import java.util.Date;
import java.util.UUID;

import org.quartz.CronExpression;
import org.quartz.CronTrigger;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SimpleTrigger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;

@Service("schedulerService")
public class SchedulerServiceImpl implements SchedulerService {

	private Scheduler scheduler;
	private JobDetail jobDetail;

	@Autowired
	public void setJobDetail(@Qualifier("jobDetail") JobDetail jobDetail) {
		this.jobDetail = jobDetail;
	}

	@Autowired
	public void setScheduler(@Qualifier("quartzScheduler") Scheduler scheduler) {
		this.scheduler = scheduler;
	}

	@Override
	public void schedule(String cronExpression) {
		schedule(null, cronExpression);
	}

	@Override
	public void schedule(String name, String cronExpression) {
		try {
			schedule(name, new CronExpression(cronExpression));
		} catch (ParseException e) {
			throw new RuntimeException(e);
		}
	}

	@Override
	public void schedule(CronExpression cronExpression) {
		schedule(null, cronExpression);
	}

	@Override
	public void schedule(String name, CronExpression cronExpression) {
		if (name == null || name.trim().equals("")) {
			name = UUID.randomUUID().toString();
		}

		try {
			scheduler.addJob(jobDetail, true);

			CronTrigger cronTrigger = new CronTrigger(name, Scheduler.DEFAULT_GROUP, jobDetail.getName(),
					Scheduler.DEFAULT_GROUP);
			cronTrigger.setCronExpression(cronExpression);
			scheduler.scheduleJob(cronTrigger);
			scheduler.rescheduleJob(name, Scheduler.DEFAULT_GROUP, cronTrigger);
		} catch (SchedulerException e) {
			throw new RuntimeException(e);
		}
	}

	@Override
	public void schedule(Date startTime) {
		schedule(startTime, null);
	}

	@Override
	public void schedule(String name, Date startTime) {
		schedule(name, startTime, null);
	}

	@Override
	public void schedule(Date startTime, Date endTime) {
		schedule(startTime, endTime, 0);
	}

	@Override
	public void schedule(String name, Date startTime, Date endTime) {
		schedule(name, startTime, endTime, 0);
	}

	@Override
	public void schedule(Date startTime, Date endTime, int repeatCount) {
		schedule(null, startTime, endTime, 0);
	}

	@Override
	public void schedule(String name, Date startTime, Date endTime, int repeatCount) {
		schedule(name, startTime, endTime, 0, 0L);
	}

	@Override
	public void schedule(Date startTime, Date endTime, int repeatCount, long repeatInterval) {
		schedule(null, startTime, endTime, repeatCount, repeatInterval);
	}

	@Override
	public void schedule(String name, Date startTime, Date endTime, int repeatCount, long repeatInterval) {
		if (name == null || name.trim().equals("")) {
			name = UUID.randomUUID().toString();
		}

		try {
			scheduler.addJob(jobDetail, true);

			SimpleTrigger SimpleTrigger = new SimpleTrigger(name, Scheduler.DEFAULT_GROUP, jobDetail.getName(),
					Scheduler.DEFAULT_GROUP, startTime, endTime, repeatCount, repeatInterval);
			scheduler.scheduleJob(SimpleTrigger);
			scheduler.rescheduleJob(name, Scheduler.DEFAULT_GROUP, SimpleTrigger);

		} catch (SchedulerException e) {
			throw new RuntimeException(e);
		}
	}
}

 SchedulerService 只有一个多态方法schedule,SchedulerServiceImpl实现SchedulerService接口,注入 org.quartz.Schedulert和org.quartz.JobDetail,schedule方法可以动态配置 org.quartz.CronExpression或org.quartz.SimpleTrigger调度时间。

五、实现自己的org.quartz.JobDetail
在上一步中SchedulerServiceImpl需要注入org.quartz.JobDetail,在以前的静态配置中

<bean id="jobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
<property name="targetObject" ref="simpleService" />
<property name="targetMethod" value="testMethod" />
</bean> 

 中使用org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean。 在这里使用org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean。 会报

 

Caused by: java.io.NotSerializableException: Unable to serialize JobDataMap for insertion into database because the value of property 'methodInvoker' is not serializable: org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean
at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.serializeJobData(StdJDBCDelegate.java:3358)
at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.insertJobDetail(StdJDBCDelegate.java:515)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.storeJob(JobStoreSupport.java:1102)
... 11 more

 

异常,google了一下,没有找到解决方法。所以在这里不能使用org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean。 ,不能pojo了,需要使用org.springframework.scheduling.quartz.JobDetailBean和org.springframework.scheduling.quartz.QuartzJobBean 实现自己的QuartzJobBean,如下:

 

package com.sundoctor.example.service;

import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.quartz.Trigger;
import org.springframework.scheduling.quartz.QuartzJobBean;

public class MyQuartzJobBean extends QuartzJobBean {

	private SimpleService simpleService;
	
	public void setSimpleService(SimpleService simpleService) {
		this.simpleService = simpleService;
	}

	@Override
	protected void executeInternal(JobExecutionContext jobexecutioncontext) throws JobExecutionException {
		Trigger trigger = jobexecutioncontext.getTrigger();
		String triggerName = trigger.getName();		
		simpleService.testMethod(triggerName);
	}

}

 MyQuartzJobBean继承org.springframework.scheduling.quartz.QuartzJobBean ,注入的SimpleService如下:

package com.sundoctor.example.service;

import java.io.Serializable;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;

@Service("simpleService")
public class SimpleService implements Serializable{
	
	private static final long serialVersionUID = 122323233244334343L;
	private static final Logger logger = LoggerFactory.getLogger(SimpleService.class);
	
	public void testMethod(String triggerName){
		//这里执行定时调度业务
		logger.info(triggerName);
	}
	
	public void testMethod2(){
		logger.info("testMethod2");
	}
}

 SimpleService主要执行定时调度业务,在这里我只是简单打印一下log日志。SimpleService需要实现java.io.Serializable接口,否则会报

 

Caused by: java.io.InvalidClassException: com.sundoctor.example.service.SimpleService; class invalid for deserialization
at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:587)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1583)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
... 64 more

 

异常。

配置applicationContext-quartz.xml文件:

 

写道
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">

<beans>
<bean name="quartzScheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="applicationContextSchedulerContextKey" value="applicationContextKey" />
<property name="configLocation" value="classpath:quartz.properties"/>
</bean>

<bean id="jobDetail" class="org.springframework.scheduling.quartz.JobDetailBean">
<property name="jobClass">
<value>com.sundoctor.example.service.MyQuartzJobBean</value>
</property>

<property name="jobDataAsMap">
<map>
<entry key="simpleService">
<ref bean="simpleService" />
</entry>
</map>
</property>


</bean>
</beans>

 quartzScheduler中没有了

<property name="triggers">
<list>
...     
</list>
/property> 

 配置,通过SchedulerService动态加入CronTrigger或SimpleTrigger。

在红色的 写道
<property name="jobDataAsMap">
<map>
<entry key="simpleService">
<ref bean="simpleService" />
</entry>
</map>
</property>

 中需要注入调度业务类,否则会报空指指错误。

dataSource:项目中用到的数据源,里面包含了quartz用到的12张数据库表;
applicationContextSchedulerContextKey: 是org.springframework.scheduling.quartz.SchedulerFactoryBean这个类中把spring上下 文以key/value的方式存放在了quartz的上下文中了,可以用applicationContextSchedulerContextKey所 定义的key得到对应的spring上下文;
configLocation:用于指明quartz的配置文件的位置,如果不用spring配置quartz的话,本身quartz是通过一 个配置文件进行配置的,默认名称是quartz.properties,里面配置的参数在quartz的doc文档中都有介绍,可以调整quartz,我 在项目中也用这个文件部分的配置了一些属性,代码如下:

 

org.quartz.scheduler.instanceName = DefaultQuartzScheduler
org.quartz.scheduler.rmi.export = false
org.quartz.scheduler.rmi.proxy = false
org.quartz.scheduler.wrapJobExecutionInUserTransaction = false

org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount = 10
org.quartz.threadPool.threadPriority = 5
org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = true

org.quartz.jobStore.misfireThreshold = 60000

#org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore

org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX
#org.quartz.jobStore.driverDelegateClass=org.quartz.impl.jdbcjobstore.HSQLDBDelegate
org.quartz.jobStore.driverDelegateClass=org.quartz.impl.jdbcjobstore.StdJDBCDelegate
#org.quartz.jobStore.useProperties = true
org.quartz.jobStore.tablePrefix = QRTZ_ 
org.quartz.jobStore.isClustered = false 
org.quartz.jobStore.maxMisfiresToHandleAtATime=1 

 这里面没有数据源相关的配置部分,采用spring注入datasource的方式已经进行了配置。

 

六、测试
运行如下测试类

package com.sundoctor.example.test;

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

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.sundoctor.quartz.service.SchedulerService;

public class MainTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		ApplicationContext springContext = new ClassPathXmlApplicationContext(new String[]{"classpath:applicationContext.xml","classpath:applicationContext-quartz.xml"});
		SchedulerService schedulerService = (SchedulerService)springContext.getBean("schedulerService");
		
		//执行业务逻辑...
		
		//设置调度任务
		//每10秒中执行调试一次
		schedulerService.schedule("0/10 * * ? * * *"); 
		
		Date startTime = parse("2009-06-01 22:16:00");
		Date endTime =  parse("2009-06-01 22:20:00");
        
		//2009-06-01 21:50:00开始执行调度
		schedulerService.schedule(startTime);

		//2009-06-01 21:50:00开始执行调度,2009-06-01 21:55:00结束执行调试
		//schedulerService.schedule(startTime,endTime);
		
		//2009-06-01 21:50:00开始执行调度,执行5次结束
		//schedulerService.schedule(startTime,null,5);

		//2009-06-01 21:50:00开始执行调度,每隔20秒执行一次,执行5次结束
		//schedulerService.schedule(startTime,null,5,20);
		
		//等等,查看com.sundoctor.quartz.service.SchedulerService		
	}
	
	private static Date parse(String dateStr){
		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		try {
			return format.parse(dateStr);
		} catch (ParseException e) {
			throw new RuntimeException(e);
		}
	}

}

 输出

写道
[2009-06-02 00:08:50]INFO com.sundoctor.example.service.SimpleService(line:17) -2059c26f-9462-49fe-b4ce-be7e7a29459f
[2009-06-02 00:10:20]INFO com.sundoctor.example.service.SimpleService(line:17) -2059c26f-9462-49fe-b4ce-be7e7a29459f
[2009-06-02 00:10:30]INFO com.sundoctor.example.service.SimpleService(line:17) -2059c26f-9462-49fe-b4ce-be7e7a29459f
[2009-06-02 00:10:40]INFO com.sundoctor.example.service.SimpleService(line:17) -2059c26f-9462-49fe-b4ce-be7e7a29459f
[2009-06-02 00:10:50]INFO com.sundoctor.example.service.SimpleService(line:17) -2059c26f-9462-49fe-b4ce-be7e7a29459f
[2009-06-02 00:11:00]INFO com.sundoctor.example.service.SimpleService(line:17) -2059c26f-9462-49fe-b4ce-be7e7a29459f
[2009-06-02 00:11:10]INFO com.sundoctor.example.service.SimpleService(line:17) -2059c26f-9462-49fe-b4ce-be7e7a29459f

 这样只是简单的将quartz trigger名称打印出来。

这样通过SchedulerService就可以动态配置调度时间。其实SchedulerService 还可扩展,比如可以注入多个JobDetail,调度不同的JobDetail。

 

将 cron 写入数据库配制是

具体的配置就是将
org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore
换成
org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX
就会自动入库了 

 

其实SchedulerService 还可扩展,比如可以注入多个JobDetail,调度不同的JobDetail

 

首先实现多个JobDeatail并注册,比如:

<bean id="jobDetail1" class="org.springframework.scheduling.quartz.JobDetailBean">
<property name="jobClass">
<value>com.sundoctor.example.service.MyQuartzJobBean1</value>
</property>

<bean id="jobDetail2" class="org.springframework.scheduling.quartz.JobDetailBean">
<property name="jobClass">
<value>com.sundoctor.example.service.MyQuartzJobBean2</value>
</property>


<bean id="jobDetail3" class="org.springframework.scheduling.quartz.JobDetailBean">
<property name="jobClass">
<value>com.sundoctor.example.service.MyQuartzJobBean3</value>
</property>
... 

 其次将多个JobDeatail放到一个HashMap中

<util:map id = "jobDeatailMap" map-class="java.util.HashMap" key-type="java.lang.String" value-type="org.springframework.scheduling.quartz.JobDetailBean">
<entry key="jobDetail1" ref="jobDetail1"/>
<entry key="jobDetail2" ref="jobDetail2"/>
<entry key="jobDetail3" ref="jobDetail3"/>
</util:map> 

 然后在SchedulerService 注入jobDeatailMap

@Service("schedulerService")  
public class SchedulerServiceImpl implements SchedulerService {  
   
     private Scheduler scheduler;  
     private Map<String,JobDetailBean> jobDeatailMap;  
   
     @Autowired  
     public void setJobDeatailMap(@Qualifier("jobDeatailMap") Map<String,JobDetailBean> jobDeatailMap) {  
         this.jobDeatailMap = jobDeatailMap;  
     }  
     @Autowired  
     public void setScheduler(@Qualifier("quartzScheduler") Scheduler scheduler) {  
         this.scheduler = scheduler;  
     } 
...

 最后,修改SchedulerServiceImpl中的schedule方法,增加以jobDeatailMap KEY名字为参数:

     @Override  
     public void schedule(String jobDetailName,String name, CronExpression cronExpression) {  
         if (name == null || name.trim().equals("")) {  
             name = UUID.randomUUID().toString();  
         }  
   
         //这个时候JobDetail根据jobDetailName从jobDeatailMap获取
         JobDetail jobDetail = jobDeatailMap.get(jobDetailName);
         try {  
             scheduler.addJob(jobDetail, true);  
   
             CronTrigger cronTrigger = new CronTrigger(name, Scheduler.DEFAULT_GROUP, jobDetail.getName(),  
                     Scheduler.DEFAULT_GROUP);  
             cronTrigger.setCronExpression(cronExpression);  
             scheduler.scheduleJob(cronTrigger);  
             scheduler.rescheduleJob(name, Scheduler.DEFAULT_GROUP, cronTrigger);  
         } catch (SchedulerException e) {  
             throw new RuntimeException(e);  
         }  
     }
其它多态方法一样修改,增加jobDetailName参数。    

 

调用时,传不同的jobDetailName参数就可以调用不用的JobDetail。

SchedulerService schedulerService = (SchedulerService)springContext.getBean("schedulerService"); 

schedulerService.schedule("jobDetail1","审计任务","0/10 * * ? * * *");   

schedulerService.schedule("jobDetail2","发放任务","0/10 * * ? * * *"); 

schedulerService.schedule("jobDetail3","AAA任务","0/10 * * ? * * *"); 

 

其实很多时候只需要一个JobDetail就可以了,也可以达到多个JobDetail一样的效果,一个JobDetail的时候可以在Trigger名称上做扩展,可以在调度任务时给Trigger名称加上不同的前缀或后缀,比如Trigger名称增加一个前缀参数,

 

     @Override  
     public void schedule(String name, String prefix ,CronExpression cronExpression) {  
         if (name == null || name.trim().equals("")) {  
             name = UUID.randomUUID().toString();  
         }  
   
         try {  
             scheduler.addJob(jobDetail, true);  
             
             //给Trigger名秒加上前缀
             name = prefix + name;

             CronTrigger cronTrigger = new CronTrigger(name, Scheduler.DEFAULT_GROUP, jobDetail.getName(),  
                     Scheduler.DEFAULT_GROUP);  
             cronTrigger.setCronExpression(cronExpression);  
             scheduler.scheduleJob(cronTrigger);  
             scheduler.rescheduleJob(name, Scheduler.DEFAULT_GROUP, cronTrigger);  
         } catch (SchedulerException e) {  
             throw new RuntimeException(e);  
         }  
     }  

 然后在QuartzJobBean中的executeInternal方法取到Trigger名秒,然后根据其前缀或后缀调用不同的业务逻辑

 

 public class MyQuartzJobBean extends QuartzJobBean {  
   
     private SimpleService simpleService;  
       
     public void setSimpleService(SimpleService simpleService) {  
         this.simpleService = simpleService;  
     }  
   
     @Override  
     protected void executeInternal(JobExecutionContext jobexecutioncontext) throws JobExecutionException {  
         Trigger trigger = jobexecutioncontext.getTrigger(); 
         //取得Trigger名称,判断名称前缀或后缀调用不同的业务逻辑
         String triggerName = trigger.getName();  
         if(tirggerName ...){
             simpleService.testMethod(triggerName);  
         }else if(tirggerName ...){
             simpleService.testMethod2(triggerName); 
         }else{
             ...
         }
     }  
   
 }

 

 

上面说过simpleService和其中注入各属性需要实现Serializable序列化接口,你的BakcupDao继承自 HibernateDaoSupport虽然也实现了序列化接口,但是HibernateDaoSupport里的HibernateTemplate并 没有实现序列化接口,所以你取得的HibernateTemplate永远为null。因此获取HibernateTemplate必须换一种方式,你的 BakcupDao不能继承自HibernateDaoSupport。HibernateTemplate没有实现序列化接口,而 SessionFactory是实现序列化接口的,在bakcupDao注入SessionFactory,通过SessionFactory获取 HibernateTemplate。

你的bakcupDao可以这样写

 

import java.io.Serializable;

import org.hibernate.SessionFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import com.sundoctor.example.service.SimpleService;

@Repository("bakcupDao")
public class BakcupDao implements Serializable {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;	
	private SessionFactory sessionFactory;	

	@Autowired
	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;		
	}


	public boolean backupDateabase(String dbname, String bfname) {
		final String dbName = dbname;
		final String bfname1 = bfname;
            HibernateTemplate  hibernateTemplate = new HibernateTemplate(sessionFactory);
		return (Boolean)hibernateTemplate.execute(new HibernateCallback() {
			public Object doInHibernate(Session session) {
				boolean flag = true;
				PreparedStatement pstmt = null;

				try {
					pstmt = session.connection().prepareStatement("{call p_Backup_Or_Restore(?,?,?)}");
					pstmt.setString(1, bfname1);
					pstmt.setString(2, dbName);
					pstmt.setInt(3, 1);
					pstmt.execute();
					System.out.println("数据库已备份");
				} catch (Exception e) {
					flag = false;
					e.printStackTrace();
				}
				return flag;
			}
		});
	}
}	
 

 

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