贴上两个自己写好的Netty使用实例，以便备注，以下两个例子基于netty-3.5.7.Final.jar用Junit进行测试

第一个例子：简单的发送字符串，接收字符串“Hello, World”

package com.wujintao.netty;

import java.net.InetSocketAddress;
import java.util.concurrent.Executors;

import org.jboss.netty.bootstrap.ClientBootstrap;
import org.jboss.netty.bootstrap.ServerBootstrap;
import org.jboss.netty.channel.ChannelFuture;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelPipelineFactory;
import org.jboss.netty.channel.ChannelStateEvent;
import org.jboss.netty.channel.Channels;
import org.jboss.netty.channel.ExceptionEvent;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.channel.SimpleChannelHandler;
import org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory;
import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
import org.jboss.netty.handler.codec.string.StringDecoder;
import org.jboss.netty.handler.codec.string.StringEncoder;
import org.junit.Test;

class HelloWorldServerHandler extends SimpleChannelHandler {
public void channelConnected(ChannelHandlerContext ctx, ChannelStateEvent e)
throws Exception {
e.getChannel().write("Hello, World");
}

public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) {
System.out.println("Unexpected exception from downstream."
+ e.getCause());
e.getChannel().close();
}
}

class HelloWorldClientHandler extends SimpleChannelHandler {

public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) {
String message = (String) e.getMessage();
System.out.println(message);
e.getChannel().close();
}

public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) {
System.out.println("Unexpected exception from downstream."
+ e.getCause());
e.getChannel().close();
}
}

/**
* Netty VS MinaNetty基于Pipeline处理，Mina基于Filter过滤
* Netty的事件驱动模型具有更好的扩展性和易用性
* Https，SSL，PB，RSTP，Text &Binary等协议支持
* Netty中UDP传输有更好的支持官方测试Netty比Mina性能更好
* @author Administrator
*
*/
public class TestCase {