spring 多线程计划任务-优快云博客

本文介绍了一个使用Spring框架配置异步任务的例子，包括线程池的任务执行器设置、定时任务的实现方式及其参数配置。

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "/spring-beans.dtd">
<beans>

  <!-- 异步线程池 -->
  <bean id="threadPool" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
    <!-- 核心线程数  -->
    <property name="corePoolSize" value="10" />
    <!-- 最大线程数 -->
    <property name="maxPoolSize" value="50" />
    <!-- 队列最大长度 >=mainExecutor.maxSize -->
    <property name="queueCapacity" value="1000" />
    <!-- 线程池维护线程所允许的空闲时间 -->
    <property name="keepAliveSeconds" value="300" />
    <!-- 线程池对拒绝任务(无线程可用)的处理策略 -->
    <property name="rejectedExecutionHandler">
      <bean class="java.util.concurrent.ThreadPoolExecutor$CallerRunsPolicy" />
    </property>
  </bean>

  <bean id="mainExecutor" class="supben.MainExecutor">
    <property name="threadPool" ref="threadPool" /> 
  </bean>

  <bean id="springScheduleExecutorTask" class="org.springframework.scheduling.concurrent.ScheduledExecutorTask">
    <property name="runnable" ref="mainExecutor" />
    <!-- 容器加载10秒后开始执行 -->
    <property name="delay" value="10000" />
    <!-- 每次任务间隔 5秒-->
    <property name="period" value="5000" />
  </bean>

    <bean id="springScheduledExecutorFactoryBean" class="org.springframework.scheduling.concurrent.ScheduledExecutorFactoryBean">
    <property name="scheduledExecutorTasks">
      <list>
        <ref bean="springScheduleExecutorTask" />
      </list>
    </property>
  </bean>

</beans>


public class MainExecutor extends TimerTask {

         //注入ThreadPoolTaskExecutor 到主线程中
	private ThreadPoolTaskExecutor threadPool;

	public void setThreadPool(ThreadPoolTaskExecutor threadPool){
		this.threadPool = threadPool;
	}


         //在主线程中执行任务线程.....  
	@Override
	public void run() {
		threadPool.execute(new Task1());

	}


//任务线程1... 同理可以有2，有3..
public class Task1 implements Runnable {
		public void run() {
		Time time  = new Time(System.currentTimeMillis());
		System.out.println("这是第一个工作,执行于："+time);
	}

}