Mina入门

原创于 2018-11-26 22:34:44 发布 · 163 阅读

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CC 4.0 BY-SA版权

本文详细介绍使用Mina框架搭建网络通信的过程，包括服务器端和客户端的配置与交互。通过实例演示了如何设置编码过滤器、调整会话配置以及处理各种会话事件，如消息接收、发送和会话关闭等。

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package com.mina;

import java.net.InetSocketAddress;

import java.nio.charset.Charset;

import org.apache.mina.core.service.IoAcceptor;

import org.apache.mina.core.service.IoHandler;

import org.apache.mina.core.session.IdleStatus;

import org.apache.mina.core.session.IoSessionConfig;

import org.apache.mina.filter.codec.ProtocolCodecFilter;

import org.apache.mina.filter.codec.textline.LineDelimiter;

import org.apache.mina.filter.codec.textline.TextLineCodecFactory;

import org.apache.mina.transport.socket.nio.NioSocketAcceptor;

public class MinaServer {

static int PORT = 7080;

static IoAcceptor accept = null;

public static void main(String[] args) throws Exception {

accept = new NioSocketAcceptor();

/*Charset charSet = Charset.forName("UTF-8");

String encodingDelimiter = LineDelimiter.WINDOWS.getValue();

String decodingDelimiter = LineDelimiter.WINDOWS.getValue();

ProtocolCodecFactory codecFactory = new TextLineCodecFactory(charSet, encodingDelimiter, decodingDelimiter);

IoFilter codecFilter = new ProtocolCodecFilter(codecFactory);

accept.getFilterChain().addLast("codec", codecFilter);*/

//设置编码过滤器

accept.getFilterChain().addLast("codec", new ProtocolCodecFilter(

new TextLineCodecFactory(

Charset.forName("UTF-8"),

LineDelimiter.WINDOWS.getValue(),

LineDelimiter.WINDOWS.getValue()

)

);

IoSessionConfig sessionConfig = accept.getSessionConfig();

//设置读缓冲区的大小

sessionConfig.setReadBufferSize(1024);

sessionConfig.setIdleTime(IdleStatus.BOTH_IDLE, 10);

IoHandler myHandler = new MyServerHandler();

accept.setHandler(myHandler);

accept.bind(new InetSocketAddress(PORT));

System.out.println("Server->" + PORT);

}

package com.mina;

import java.text.SimpleDateFormat;

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;

public class MyServerHandler extends IoHandlerAdapter {

private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

@Override

public void exceptionCaught(IoSession session, Throwable cause) throws Exception {

System.out.println("exceptionCaught()");

}

@Override

public void inputClosed(IoSession session) throws Exception {

System.out.println("inputClosed()");

}

@Override

public void messageReceived(IoSession session, Object message) throws Exception {

String msg = (String)message;

Date d = new Date();

String dateStr = sdf.format(d);

System.out.println(dateStr + "服务器接受到数据：" + msg);

if(msg.equals("exit")) {

session.closeNow();

}else {

session.write(dateStr);

}

@Override

public void messageSent(IoSession session, Object message) throws Exception {

System.out.println("messageSent()");

}

@Override

public void sessionClosed(IoSession session) throws Exception {

System.out.println("sessionClosed()");

}

@Override

public void sessionCreated(IoSession session) throws Exception {

System.out.println("sessionCreated()");

}

@Override

public void sessionIdle(IoSession session, IdleStatus status) throws Exception {

System.out.println("sessionIdle()");

}

@Override

public void sessionOpened(IoSession session) throws Exception {

System.out.println("sessionOpened()");

}

Server->7080

sessionCreated()

sessionOpened()

sessionIdle()

log4j:WARN No appenders could be found for logger (org.apache.mina.filter.codec.ProtocolCodecFilter).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

2018-11-26 21:21:22服务器接受到数据：hello

messageSent()

2018-11-26 21:21:25服务器接受到数据：world

messageSent()

2018-11-26 21:21:30服务器接受到数据：exit

sessionClosed()

客户端操作

package com.mina;

import java.net.InetSocketAddress;

import java.nio.charset.Charset;

import org.apache.mina.core.future.ConnectFuture;

import org.apache.mina.core.service.IoConnector;

import org.apache.mina.core.service.IoHandler;

import org.apache.mina.core.session.IoSession;

import org.apache.mina.filter.codec.ProtocolCodecFilter;

import org.apache.mina.filter.codec.textline.LineDelimiter;

import org.apache.mina.filter.codec.textline.TextLineCodecFactory;

import org.apache.mina.transport.socket.nio.NioSocketConnector;

public class MinaClient {

private static String HOST="localhost";

private static int PORT = 7080;

public static void main(String[] args) {

IoSession session = null;

IoConnector connector = new NioSocketConnector();

connector.setConnectTimeoutMillis(3000);

//设置过滤器

connector.getFilterChain().addLast("codec", new ProtocolCodecFilter(

new TextLineCodecFactory(

Charset.forName("UTF-8"),

LineDelimiter.WINDOWS.getValue(),

LineDelimiter.WINDOWS.getValue()

)

);

IoHandler myHandler = new MyClientHandler();

connector.setHandler(myHandler);

ConnectFuture future = connector.connect(new InetSocketAddress(HOST, PORT));

future.awaitUninterruptibly();

session = future.getSession();

session.write("你好，张飞");

session.getCloseFuture().awaitUninterruptibly();//等待关闭连接

connector.dispose();

}

package com.mina;

import java.text.SimpleDateFormat;

import java.util.Date;

import org.apache.mina.core.service.IoHandlerAdapter;

import org.apache.mina.core.session.IoSession;

public class MyClientHandler extends IoHandlerAdapter {

private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

@Override

public void exceptionCaught(IoSession session, Throwable cause) throws Exception {

System.out.println("exceptionCaught()");

}

@Override

public void messageReceived(IoSession session, Object message) throws Exception {

String msg = (String)message;

Date d = new Date();

String dateStr = sdf.format(d);

System.out.println(dateStr + "客户端收到服务器发送回来的数据：" + msg);

}

服务器

Server->7080

sessionCreated()

sessionOpened()

log4j:WARN No appenders could be found for logger (org.apache.mina.filter.codec.ProtocolCodecFilter).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

2018-11-26 22:31:03服务器接受到数据：你好，张飞

messageSent()

sessionIdle()

客户端

log4j:WARN No appenders could be found for logger (org.apache.mina.filter.codec.ProtocolCodecFilter).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

2018-11-26 22:31:03客户端收到服务器发送回来的数据：2018-11-26 22:31:03