<!-- 定时器依赖 开始 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>4.0.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.quartz-scheduler</groupId>
      <artifactId>quartz</artifactId>
      <version>2.2.1</version>
    </dependency>
    <!-- 定时器依赖 结束 -->

<beans xmlns:task="http://www.springframework.org/schema/task"   
xsi:schemaLocation="http://www.springframework.org/schema/task          
http://www.springframework.org/schema/task/spring-task-4.1.xsd ">

<task:annotation-driven scheduler="kevinScheduler"/>  
<task:scheduler id="kevinScheduler" pool-size="5"/> 

import java.text.DateFormat; 
import java.text.SimpleDateFormat; 
import java.util.concurrent.TimeUnit; 
import org.joda.time.DateTime; 
import org.springframework.scheduling.annotation.Scheduled; 
import org.springframework.stereotype.Component; 
@Component 
public class ATask { 
    @Scheduled(cron="0/10 * * * * ? ")  //每10秒执行一次   
    public void aTask(){   
      try { 
        TimeUnit.SECONDS.sleep(20); 
      } catch (InterruptedException e) { 
        e.printStackTrace(); 
      } 
      DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
      System.out.println(sdf.format(DateTime.now().toDate())+"*********A任务每10秒执行一次进入测试");   
    }   
}