面是自己自動調度的一些學習。
這里只采用jdk自帶的timer進行的,準備在下篇文章中用Quartz調度器。
首先建立你自己要運行的類。
package com.duduli.li;
public class Display {
public void disp(){
System.out.println("自動控制測試");
}
}
一個簡單的java bean,其中在這里你可以替換自己的任務。
然后就是編寫調度程序,這里要繼承jdk中的TimerTask類,復寫他的run方法。
package com.duduli.li;
import java.util.TimerTask;
public class AutoRan extends TimerTask {
//set方法是spring的DI
private Display display;
public void setDisplay(Display display) {
this.display = display;
}
@Override
public void run() {
display.disp();
}
}
然后就是重要的一步,編寫applicationsContext.xml了。
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<bean id="display"
class="com.duduli.li.Display">
</bean>
<bean id="atuoRun"
class="com.duduli.li.AutoRan">
<property name="display" ref="display"></property>
</bean>
<bean id="aR"
class="org.springframework.scheduling.timer.ScheduledTimerTask">
<property name="timerTask" ref="atuoRun"></property>
<!--
period多長時間運行一次,delay表示允許你當任務第一次運行前應該等待多久
-->
<property name="period" value="5000"></property>
<property name="delay" value="2000"></property>
</bean>
<bean id="test"
class="org.springframework.scheduling.timer.TimerFactoryBean">
<property name="scheduledTimerTasks">
<list>
<!--
這里使用list,可以調度多個bean,
-->
<ref bean="aR"/>
</list>
</property>
</bean>
</beans>
再來就是客戶端調度了。
package com.duduli.li;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Client {
public static void main(String[] args) {
BeanFactory factory = new ClassPathXmlApplicationContext("applicationContext.xml");
factory.getBean("test");
}
}
使用quartz和spring自動調度。
具體實現bean:
package com.duduli.li.quartz;
import java.util.Date;
public class Display {
@SuppressWarnings("deprecation")
public void disp(){
System.out.println(new Date().getSeconds());
System.out.println("自動控制測試");
}
}
繼承quartzjobbean類:這個類和繼承Timer類類似
。
package com.duduli.li.quartz;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;
public class AutoRun extends QuartzJobBean{
private Display display;
public void setDisplay(Display display) {
this.display = display;
}
@Override
protected void executeInternal(JobExecutionContext arg0)
throws JobExecutionException {
display.disp();
}
}
spring配置文件:
<!-- quartz進行自動調度 -->
<!-- 具體實現類 -->
<bean id="display2" class="com.duduli.li.quartz.Display"></bean>
<!-- spring對quartz的支持,Auto類實現quartz的job接口的類,jobDataAsMap是將實現類注入其中 -->
<bean id="quartz" class="org.springframework.scheduling.quartz.JobDetailBean">
<property name="jobClass" value="com.duduli.li.quartz.AutoRun"/>
<property name="jobDataAsMap">
<map>
<entry key="display" value-ref="display2"></entry>
</map>
</property>
</bean>
<!-- spring對quartz的支持,對其值的設定 -->
<bean id="simpleTask" class="org.springframework.scheduling.quartz.SimpleTriggerBean">
<property name="jobDetail" ref="quartz"></property>
<property name="startDelay" value="2000"></property>
<property name="repeatInterval" value="2000"></property>
</bean>
<!-- 啟動自動調度 -->
<bean id="quartzTest" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="triggers">
<list>
<ref bean="simpleTask"/>
</list>
</property>
</bean>
client調用:
package com.duduli.li.quartz;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Client {
public static void main(String[] args) {
BeanFactory factory = new ClassPathXmlApplicationContext("applicationContext.xml");
factory.getBean("quartzTest");
}
}