多线程异步事件、任务自动调度

 

package com.xiaonei.thread;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

/**
 *  
要充分利用java的多线程特性，对于比较耗时，且用户无须等待通知的事件，可以考虑采用异步事件处理，
本文模拟发送邮件，以及一个自动更新的任务调度:
 * @author Administrator
 *
 */
public class ExecutorsTest {
	
	/**
	 * 异步事件,发送邮件
	 */
	private ExecutorService service = Executors.newFixedThreadPool(8);
	
	/**自动更新调度线程*/
	private ScheduledExecutorService scService = Executors.newSingleThreadScheduledExecutor();
	
	/**自动更新时间间隔*/
	private static final int UPDATE_INTERVAL = 2; //s
	
	private  AtomicInteger counter = new AtomicInteger();  //计数器类
	
	private static ExecutorsTest instance = new ExecutorsTest();
	
	public static ExecutorsTest getInstance(){
		return instance;
	}
	
	private ExecutorsTest() {
		startUpdateMoniter();
	}
	
	private void startUpdateMoniter(){
		scService.scheduleWithFixedDelay(new Runnable() {
			@Override
			public void run() {
				System.out.println("任务自动更新:"+System.currentTimeMillis()+",次数:"+getNextId());
			}
		}, UPDATE_INTERVAL, UPDATE_INTERVAL, TimeUnit.SECONDS);
	}
	
	public int getNextId(){
		return counter.incrementAndGet();
	}
	
	/**
	 * 发送邮件
	 * @param emails
	 * @return
	 */
	public boolean sendMail(String emails){
		service.submit(new SendMailsTask(emails));
		return true;
	}
	
	public static void main(String[] args) {
		ExecutorsTest test = ExecutorsTest.getInstance();
		System.out.println(test.sendMail("[e-mail]"));
	}
}

/**
 * 异步发送邮件
 */
class SendMailsTask implements Runnable{
	String emails = "";
	public SendMailsTask(String emails) {
		this.emails = emails;
	}

	@Override
	public void run() {
		System.out.println("--------发送邮件--:"+emails+Thread.currentThread().getName());
	}
}

 

评论

5 楼 carlosfu 2012-09-22  

这么牛啊，昨天发的 800多点击啊。
牛

4 楼 liuInsect 2012-09-22  

没看出个什么问题啊、

3 楼 Coolala_cs 2012-09-21  

nice!

2 楼 luxing44530 2012-09-21  

akka actor?

1 楼 overshit 2012-09-21  

我在项目里写了一个类似功能，建议博主吧邮件补全，还有对线程状态进行监控处理，日志系统添加