Spring framework实现定时器之Timer

    在开发过程中,常常全有定时更新,定时数据拷贝和定时发邮件的功能.

    Spring 中有关于定时器的功能,能很好地实现我们在开发中的需求.今天整理的是Timer.

    1.编写BusinessTimer定时器

 1import java.util.HashSet;
 2import java.util.Set;
 3import java.util.TimerTask;
 4
 5public class BusinessTimer extends TimerTask{
 6
 7    @Override
 8    public void run() {
 9    System.out.println(System.currentTimeMillis());           
    }
}

      在BusinessTimer类中,实现所要触发的事务.

  2.新建schedulingContext-timer.xml文件,在schedulingContext-timer.xml描述用户的定时器

 1<?xml version="1.0" encoding="UTF-8"?>
 2<beans xmlns="http://www.springframework.org/schema/beans"
 3    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
 5    <bean id="timer" class="org.springframework.scheduling.timer.TimerFactoryBean">
 6       <property name="scheduledTimerTasks">
 7           <list>
 8              <ref local="JorwangScheduledTimerTask1"/>
 9           </list>
       </property>
    </bean>
    <bean id="JorTimeTask1" class="BusinessTimer"></bean>
    <bean id="JorwangScheduledTimerTask1" class="org.springframework.scheduling.timer.ScheduledTimerTask">
      <property name="timerTask"><ref local="JorTimeTask1"/></property>
      <property name="delay"><value>10000</value></property>
      <!-- 24小时启动-->
      <property name="period"><value>86400000</value></property> 
    </bean>
</beans>

 

  3.在Web.xml中申明

 1.
 2   <context-param>
 3     <param-name>contextConfigLocation</param-name>
 4     <param-value>/WEB-INF/schedulingContext-timer.xml</param-value>
 5   </context-param>
 6   <servlet>
 7     <servlet-name>context</servlet-name>
 8     <servlet-class>org.springframework.web.context.ContextLoaderServlet</servlet-class>
 9     <load-on-startup>1</load-on-startup>
   </servlet>
.

     或者

.
  <context-param>
     <param-name>contextConfigLocation</param-name>
     <param-value>/WEB-INF/schedulingContext-timer.xml</param-value>
   </context-param>
   <listener>
     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
   </listener>
.