MINA线程模型
一个IO Processor线程接管所有Sockets，进行I/O侦听。当某个Socket有I/O事件时，把该Socket委派给 I/O Processor 线程池中一个空闲线程处理。
服务端
和/simonchi/article/details/40613923 文章类似
Apache MINA是一个网络应用程序框架，用来帮助用户简单地开发高性能和高可扩展性的网络应用程序。它提供了一个通过Java NIO在不同的传输例如TCP/IP和UDP/IP上抽象的事件驱动的异步API
对JAVA的SOCKET做了一层包装
Apache MINA 通常可被称之为：
NIO 框架库；
一篇好的关于MINA详解的文章推荐： /topic/1109234#%E6%B3%A8%E4%BA%8C
客户端/服务器框架库；
或者一个网络socket库。
package com.tree.demo.mina;import java.io.IOException;import .InetSocketAddress;import java.nio.charset.Charset;import org.apache.mina.core.service.IoAcceptor;import org.apache.mina.core.session.IdleStatus;import org.apache.mina.filter.codec.ProtocolCodecFilter;import org.apache.mina.filter.codec.textline.TextLineCodecFactory;import org.apache.mina.filter.logging.LoggingFilter;import org.apache.mina.transport.socket.nio.NioSocketAcceptor;public class MinaServer {private static int BUF_SIZE = 1024;private static int PORT = 8212;public static void main(String[] args) {// TODO Auto-generated method stubIoAcceptor acceptor = new NioSocketAcceptor();acceptor.getFilterChain().addLast("logger", new LoggingFilter());acceptor.getFilterChain().addLast("codec", new ProtocolCodecFilter(new TextLineCodecFactory(Charset.forName("UTF-8"))));acceptor.setHandler(new MinaBizHandler());acceptor.getSessionConfig().setReadBufferSize(BUF_SIZE);acceptor.getSessionConfig().setIdleTime(IdleStatus.BOTH_IDLE, 10);try {acceptor.bind(new InetSocketAddress(PORT));} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}
服务端处理器，重写了IoHandlerAdapter类中的方法，该类负责处理网络交互的数据以及session的关闭建立，连接的处理等等
package com.tree.demo.mina;import java.util.Date;import java.util.Scanner;import org.apache.mina.core.service.IoHandlerAdapter;import org.apache.mina.core.session.IdleStatus;import org.apache.mina.core.session.IoSession;public class MinaBizHandler extends IoHandlerAdapter {public void exceptionCaught(IoSession session, Throwable cause)throws Exception {cause.printStackTrace();}@Overridepublic void sessionCreated(IoSession session) throws Exception {// TODO Auto-generated method stubsuper.sessionCreated(session);}@Overridepublic void sessionOpened(IoSession session) throws Exception {// TODO Auto-generated method stubsuper.sessionOpened(session);}@Overridepublic void sessionClosed(IoSession session) throws Exception {// TODO Auto-generated method stubsuper.sessionClosed(session);session.close(true);}@Overridepublic void sessionIdle(IoSession session, IdleStatus status)throws Exception {// TODO Auto-generated method stubSystem.out.println("IDLE : " + session.getIdleCount(status) + ">now : " + new Date());}@Overridepublic void messageReceived(IoSession session, Object message)throws Exception {// TODO Auto-generated method stubString str = message.toString();System.out.println("Message received: " + str);if (str.trim().equalsIgnoreCase("quit")) {session.close(true);return;}Scanner sc = new Scanner(System.in);String cnt = sc.nextLine();StringBuffer say = new StringBuffer();while (!cnt.equals("go")) {say.append("\n" + cnt);cnt = sc.nextLine();}// Date now = new Date();session.write(say);System.out.println("Message written !");}@Overridepublic void messageSent(IoSession session, Object message) throws Exception {// TODO Auto-generated method stubsuper.messageSent(session, message);System.out.println("server sent : " + message.toString());}public static void main(String[] args) {// TODO Auto-generated method stub}}
以上就实现了服务端的程序，从handler的程序处理来看，当每次收到客户端发来的消息，就会开始等待服务端输入信息，知道输入go才会将服务端消息发送给客户端，而客户端则在输入quit后，就断开与服务端的连接了
客户端消息
服务端消息
通过该例子，各位就可以在此基础上发挥，写个GUI的聊天工具就很轻松了，核心的东西已经有了，剩下的就是一些其它处理了。
