Java ThreadPoolTaskExecutor使用

1. 配置

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context-3.1.xsd">

	<bean id="taskExecutor"
		class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
		<property name="corePoolSize" value="5" />
		<property name="maxPoolSize" value="10" />
		<property name="WaitForTasksToCompleteOnShutdown" value="true" />
	</bean>

</beans>

　2. 使用　

public class App {
  public static void main(String[] args) {

    ApplicationContext context = new ClassPathXmlApplicationContext("Spring-Config.xml");
    ThreadPoolTaskExecutor taskExecutor = (ThreadPoolTaskExecutor) context.getBean("taskExecutor");
    taskExecutor.execute(new PrintTask("Thread 1"));
    taskExecutor.execute(new PrintTask("Thread 2"));
    taskExecutor.execute(new PrintTask("Thread 3"));
    taskExecutor.execute(new PrintTask("Thread 4"));
    taskExecutor.execute(new PrintTask("Thread 5"));

	//check active thread, if zero then shut down the thread pool
	for (;;) {
		int count = taskExecutor.getActiveCount();
		System.out.println("Active Threads : " + count);
		try {
			Thread.sleep(1000);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		if (count == 0) {
			taskExecutor.shutdown();
			break;
		}
	}

    }
}

　　3. 线程

public class PrintTask implements Runnable{

	String name;

	public PrintTask(String name){
		this.name = name;
	}

	@Override
	public void run() {

		System.out.println(name + " is running");

		try {
			Thread.sleep(5000);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}

		System.out.println(name + " is running");
	}

}

　　

参考