Mina 报文通信简单示例

MINA TCP简单通信实例：http://donald-draper.iteye.com/blog/2375297
MINA 编解码器实例：http://donald-draper.iteye.com/blog/2375317
MINA 多路分离解码器实例：http://donald-draper.iteye.com/blog/2375324
Mina Socket会话配置：http://donald-draper.iteye.com/blog/2375529
Mina Socket与报文过滤链：http://donald-draper.iteye.com/blog/2376440
Mina 协议编解码过滤器一（协议编解码工厂、协议编码器）：
http://donald-draper.iteye.com/blog/2376663
Mina 协议编解码过滤器二（协议解码器）：
http://donald-draper.iteye.com/blog/2376679
Mina 队列Queue：http://donald-draper.iteye.com/blog/2376712
Mina 协议编解码过滤器三（会话write与消息接收过滤）：
http://donald-draper.iteye.com/blog/2376818
Mina 累计协议解码器：http://donald-draper.iteye.com/blog/2377029
MINA 多路复用协议编解码器工厂一（多路复用协议编码器）:
http://donald-draper.iteye.com/blog/2377170
MINA 多路复用协议编解码器工厂二（多路复用协议解码器）：
http://donald-draper.iteye.com/blog/2377324
Mina IoHandler接口定义：http://donald-draper.iteye.com/blog/2377419
Mina Nio会话（Socket，DataGram）：http://donald-draper.iteye.com/blog/2378169
Mina Nio处理器：http://donald-draper.iteye.com/blog/2377725
Mina socket监听器（NioSocketAcceptor）：http://donald-draper.iteye.com/blog/2378668
Mina socket连接器（NioSocketConnector）：http://donald-draper.iteye.com/blog/2379000
前面的文章我们关注时Mina的socket通信，从今天起，我们来看一下报文通信，从一个实例开始：
Server-peer：

package mina.udp.main;

import java.net.InetSocketAddress;

import org.apache.mina.core.filterchain.DefaultIoFilterChainBuilder;
import org.apache.mina.core.service.IoAcceptor;
import org.apache.mina.filter.logging.LoggingFilter;
import org.apache.mina.transport.socket.DatagramSessionConfig;
import org.apache.mina.transport.socket.nio.NioDatagramAcceptor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import mina.udp.handler.UdpServerHandler;
/**
 * NioDatagramAcceptor Server peer
 * @author donald
 * 2017年5月18日
 * 下午9:59:13
 */
public class UdpServer {
	private  static final Logger log = LoggerFactory.getLogger(UdpServer.class);
	private static final  String ip = "192.168.31.153";
	private static final  int port = 9122;
	
	public static void main(String[] args) throws Exception {
		IoAcceptor acceptor = new NioDatagramAcceptor();
		//配置会话Handler
		UdpServerHandler udpServerHandler = new UdpServerHandler();
		acceptor.setHandler(udpServerHandler);
		//配置过滤器
		DefaultIoFilterChainBuilder  defaultIoFilterChainBuilder = acceptor.getFilterChain();
		defaultIoFilterChainBuilder.addLast("logger", new LoggingFilter());
		//配置会话
		DatagramSessionConfig datagramSessionConfig = (DatagramSessionConfig) acceptor.getSessionConfig();
		datagramSessionConfig.setReuseAddress(true);
		//绑定地址
		InetSocketAddress inetSocketAddress = new InetSocketAddress(ip,port);
		acceptor.bind(inetSocketAddress);
		log.info("=========Udp Server peer is start...");
	}
}

server-handler：

package mina.udp.handler;

import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;

import org.apache.mina.core.buffer.IoBuffer;
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;
/**
 * Udp Server peer handler
 * @author donald
 * 2017年5月18日
 * 下午10:00:21
 */
public class UdpServerHandler extends IoHandlerAdapter {
	private  static final Logger log = LoggerFactory.getLogger(UdpServerHandler.class);
	private  static final CharsetEncoder charsetEncoder= Charset.forName("UTF-8").newEncoder();
	private static final CharsetDecoder charsetDecoder= Charset.forName("UTF-8").newDecoder();
	public void messageReceived(IoSession session, Object message) throws Exception {
		IoBuffer buffer = (IoBuffer) message;
		String msg = buffer.getString(buffer.limit(),charsetDecoder);
		log.info("=========The message received from Server peer is:" + msg);
		buffer.clear();
		buffer.putString("Hello Client peer...", charsetEncoder);
		buffer.flip();
		session.write(buffer);
	}

	@Override
	public void sessionClosed(IoSession session) throws Exception {
		log.debug("=========Session Closed...");
	}

	@Override
	public void sessionCreated(IoSession session) throws Exception {
		log.debug("=========Session Created...");
	}

	@Override
	public void sessionIdle(IoSession session, IdleStatus status) throws Exception {
		log.debug(session + "=========Session Idle...");
	}

	@Override
	public void sessionOpened(IoSession session) throws Exception {
		log.debug("=========Session Opened...");
	}

	@Override
	public void exceptionCaught(IoSession session, Throwable cause) throws Exception {
		log.error(cause.getMessage());
		session.closeNow();
	}

	@Override
	public void messageSent(IoSession session, Object message) throws Exception {
		log.debug("******************* messageSent...");
	}
}

client-peer：

package mina.udp.main;

import java.net.InetSocketAddress;

import org.apache.mina.core.filterchain.DefaultIoFilterChainBuilder;
import org.apache.mina.core.future.ConnectFuture;
import org.apache.mina.core.service.IoConnector;
import org.apache.mina.filter.logging.LoggingFilter;
import org.apache.mina.transport.socket.nio.NioDatagramConnector;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import mina.udp.handler.UdpClientHandler;
/**
 * NioDatagramConnector Client peer
 * @author donald
 * 2017年5月18日
 * 下午10:19:35
 */
public class UdpClient {
	private  static final Logger log = LoggerFactory.getLogger(UdpClient.class);
	private static final String ip = "192.168.31.153";
	private static final int port = 9122;
	public static void main(String[] args) throws Exception {
		IoConnector connector = new NioDatagramConnector();
		//配置会话Handler
		UdpClientHandler udpClientHandler = new UdpClientHandler();
		connector.setHandler(udpClientHandler);
		//配置过滤器
		DefaultIoFilterChainBuilder  defaultIoFilterChainBuilder = connector.getFilterChain();
		defaultIoFilterChainBuilder.addLast("logger", new LoggingFilter());
		InetSocketAddress inetSocketAddress = new InetSocketAddress(ip,port);
		//连接远端peer
		ConnectFuture connFuture = connector.connect(inetSocketAddress);
		connFuture.awaitUninterruptibly();
		log.info("=========Udp Client peer is start...");
	}
}

client-handler：

package mina.udp.handler;

import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;

import org.apache.mina.core.buffer.IoBuffer;
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;
/**
 * Udp Client peer handler
 * @author donald
 * 2017年5月18日
 * 下午10:24:45
 */
public class UdpClientHandler extends IoHandlerAdapter {
	private  static final Logger log = LoggerFactory.getLogger(UdpClientHandler.class);
	private  static final CharsetEncoder charsetEncoder= Charset.forName("UTF-8").newEncoder();
	private static final CharsetDecoder charsetDecoder= Charset.forName("UTF-8").newDecoder();
	public void messageReceived(IoSession session, Object message) throws Exception {
		IoBuffer buffer = (IoBuffer) message;
		String msg = buffer.getString(buffer.limit(),charsetDecoder);
		log.info("=========The message received from Server peer is:" + msg);
	}

	@Override
	public void sessionClosed(IoSession session) throws Exception {
		log.debug("=========Session Closed...");
	}

	@Override
	public void sessionCreated(IoSession session) throws Exception {
		log.debug("=========Session Created...");
	}

	@Override
	public void sessionIdle(IoSession session, IdleStatus status) throws Exception {
		log.debug(session + "=========Session Idle...");
	}

	@Override
	public void sessionOpened(IoSession session) throws Exception {
		log.debug("=========Session Opened...");
		IoBuffer buffer = IoBuffer.allocate(1024);
		buffer.putString("Hello server peer...", charsetEncoder);
		buffer.flip();
		session.write(buffer);
	}

	@Override
	public void exceptionCaught(IoSession session, Throwable cause) throws Exception {
		log.error(cause.getMessage());
		session.closeNow();
	}

	@Override
	public void messageSent(IoSession session, Object message) throws Exception {
		log.debug("=========messageSent...");
	}
}

启动server&client peer，控制台输出：
server peer：
[INFO ] 2017-06-12 09:01:05 mina.udp.main.UdpServer =========Udp Server peer is start...
[INFO ] 2017-06-12 09:01:15 org.apache.mina.filter.logging.LoggingFilter CREATED
[DEBUG] 2017-06-12 09:01:15 mina.udp.handler.UdpServerHandler =========Session Created...
[INFO ] 2017-06-12 09:01:15 org.apache.mina.filter.logging.LoggingFilter OPENED
[DEBUG] 2017-06-12 09:01:15 mina.udp.handler.UdpServerHandler =========Session Opened...
[INFO ] 2017-06-12 09:01:15 org.apache.mina.filter.logging.LoggingFilter RECEIVED: HeapBuffer[pos=0 lim=20 cap=2048: 48 65 6C 6C 6F 20 73 65 72 76 65 72 20 70 65 65...]
[INFO ] 2017-06-12 09:01:15 mina.udp.handler.UdpServerHandler =========The message received from Server peer is:Hello server peer...
[INFO ] 2017-06-12 09:01:15 org.apache.mina.filter.logging.LoggingFilter SENT: HeapBuffer[pos=0 lim=20 cap=2048: 48 65 6C 6C 6F 20 43 6C 69 65 6E 74 20 70 65 65...]
[DEBUG] 2017-06-12 09:01:15 mina.udp.handler.UdpServerHandler ******************* messageSent...

client peer:
[INFO ] 2017-06-12 09:01:15 org.apache.mina.filter.logging.LoggingFilter CREATED
[DEBUG] 2017-06-12 09:01:15 mina.udp.handler.UdpClientHandler =========Session Created...
[INFO ] 2017-06-12 09:01:15 mina.udp.main.UdpClient =========Udp Client peer is start...
[INFO ] 2017-06-12 09:01:15 org.apache.mina.filter.logging.LoggingFilter OPENED
[DEBUG] 2017-06-12 09:01:15 mina.udp.handler.UdpClientHandler =========Session Opened...
[INFO ] 2017-06-12 09:01:15 org.apache.mina.filter.logging.LoggingFilter SENT: HeapBuffer[pos=0 lim=20 cap=1024: 48 65 6C 6C 6F 20 73 65 72 76 65 72 20 70 65 65...]
[DEBUG] 2017-06-12 09:01:15 mina.udp.handler.UdpClientHandler =========messageSent...
[INFO ] 2017-06-12 09:01:15 org.apache.mina.filter.logging.LoggingFilter RECEIVED: HeapBuffer[pos=0 lim=20 cap=2048: 48 65 6C 6C 6F 20 43 6C 69 65 6E 74 20 70 65 65...]
[INFO ] 2017-06-12 09:01:15 mina.udp.handler.UdpClientHandler =========The message received from Server peer is:Hello Client peer...