Apache Mina入门
Mina第一次听到这个名称的时候，我以为是个MM的名字米娜，后来才知道…
Apache MINA(Multipurpose Infrastructure for Network Applications)
是 Apache 组织一个较新的项目，它为开发高性能和高可用性的网络应用程序提供了非常便利的框架。当前发行的 MINA 版本支持基于 Java NIO 技术的 TCP/UDP 应用程序开发、串口通讯程序（只在最新的预览版中提供），MINA 所支持的功能也在进一步的扩展中。 目前正在使用 MINA 的软件包括有：Apache Directory Project、AsyncWeb、AMQP（Advanced Message Queuing Protocol）、RED5 Server（Macromedia Flash Media RTMP）、ObjectRADIUS、Openfire 等等。
本文就介绍入门mina的入门,
参考文档http://mina.apache.org/mina-project/quick-start-guide.html
第一步、定义MinaTimeServer.java mina服务端
/**
*
*/
package com.figo.onlineshop.test;
import java.io.IOException;
import java.net.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;
/**
* @author zhuzhifei
*
*/
public class MinaTimeServer {
private static final int PORT = 9123;
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
//定义socket接收器
IoAcceptor acceptor = new NioSocketAcceptor();
//添加日志记录
acceptor.getFilterChain().addLast( "logger", new LoggingFilter() );
//添加编码解码器
acceptor.getFilterChain().addLast( "codec", new ProtocolCodecFilter( new TextLineCodecFactory( Charset.forName( "UTF-8" ))));
//添加处理器(用于接收数据后处理处理数据逻辑)
acceptor.setHandler( new TimeServerHandler() );
//设置读取数据缓存单位byte
acceptor.getSessionConfig().setReadBufferSize( 2048 );
//设置多长时间后接收器开始空闲
acceptor.getSessionConfig().setIdleTime( IdleStatus.BOTH_IDLE, 10 );
try {
//绑定某个端口，作为数据入口
acceptor.bind( new InetSocketAddress(PORT) );
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
第二步、定义消息处理器TimeServerHandler.java
/**
*
*/
package com.figo.onlineshop.test;
import java.util.Date;
import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.core.session.IoSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author zhuzhifei
*
*/
//必须继承IoHandlerAdapter
public class TimeServerHandler extends IoHandlerAdapter {
private final Logger logger = LoggerFactory.getLogger(MinaTimeServer.class);
//补抓异常
@Override
public void exceptionCaught(IoSession session, Throwable cause)
throws Exception {
// TODO Auto-generated method stub
super.exceptionCaught(session, cause);
}
//获取客户端消息后处理逻辑
@Override
public void messageReceived(IoSession session, Object message)
throws Exception {
// TODO Auto-generated method stub
super.messageReceived(session, message);
String str = message.toString();
if( str.trim().equalsIgnoreCase("quit") ) {
session.close(true);
return;
}
Date date = new Date();
session.write( "current time:"+date.toString() );//该消息将返回给客户端
System.out.println("Message Received:"+str);
logger.info(date.toString()+"Message Received:"+str);//日志没有输出why?
}
//发送消息
@Override
public void messageSent(IoSession session, Object message) throws Exception {
// TODO Auto-generated method stub
super.messageSent(session, message);
}
//当前会话关闭
@Override
public void sessionClosed(IoSession session) throws Exception {
// TODO Auto-generated method stub
super.sessionClosed(session);
}
//创建会话
@Override
public void sessionCreated(IoSession session) throws Exception {
// TODO Auto-generated method stub
super.sessionCreated(session);
}
//会话空闲
@Override
public void sessionIdle(IoSession session, IdleStatus status)
throws Exception {
// TODO Auto-generated method stub
super.sessionIdle(session, status);
System.out.println( "IDLE " + session.getIdleCount( status ));
}
//打开会话
@Override
public void sessionOpened(IoSession session) throws Exception {
// TODO Auto-generated method stub
super.sessionOpened(session);
}
}
第三步、模拟客户端tcp调用
MinaTimeServer.java run as java Application后
C:\Documents and Settings\zhuzhifei>telnet 127.0.0.1 9123 连上服务器
客户端输入：abc后
服务端接收到：
2012-12-25 18:26:52 INFO com.figo.onlineshop.test.MinaTimeServer - Tue Dec 25 18:26:52 CST 2012Message Received:abc
客户端显示：current time:Tue Dec 25 18:26:52 CST 2012
