netty2---服务端和客户端

package com.client;import java.net.InetSocketAddress;import java.util.Scanner;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;import org.jboss.netty.bootstrap.ClientBootstrap;import org.jboss.netty.channel.Channel;import org.jboss.netty.channel.ChannelFuture;import org.jboss.netty.channel.ChannelPipeline;import org.jboss.netty.channel.ChannelPipelineFactory;import org.jboss.netty.channel.Channels;import org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory;import org.jboss.netty.handler.codec.string.StringDecoder;import org.jboss.netty.handler.codec.string.StringEncoder;/** * netty客户端入门 */public class Client { ???public static void main(String[] args) { ???????//服务类 ???????ClientBootstrap bootstrap = new ?ClientBootstrap(); ???????//2个线程池 ???????ExecutorService boss = Executors.newCachedThreadPool(); ???????ExecutorService worker = Executors.newCachedThreadPool(); ???????//设置niosocket工厂,传入2个线程池， ???????bootstrap.setFactory(new NioClientSocketChannelFactory(boss, worker)); ???????//设置管道工厂 ???????bootstrap.setPipelineFactory(new ChannelPipelineFactory() { ???????????//工厂返回ChannelPipeline，是管道，管道里面装的是过滤器， ???????????@Override ???????????public ChannelPipeline getPipeline() throws Exception { ???????????????ChannelPipeline pipeline = Channels.pipeline(); ???????????????//传的是字节流，不是字符 ???????????????pipeline.addLast("decoder", new StringDecoder()); ???????????????pipeline.addLast("encoder", new StringEncoder()); ???????????????pipeline.addLast("hiHandler", new ClientHandler()); ???????????????return pipeline; ???????????} ???????}); ???????????????//连接服务端 ???????ChannelFuture connect = bootstrap.connect(new InetSocketAddress("127.0.0.1", 10101)); ???????Channel channel = connect.getChannel(); ???????System.out.println("client start"); ???????Scanner scanner = new Scanner(System.in); ???????while(true){ ???????????System.out.println("请输入"); ???????????channel.write(scanner.next()); ???????} ???}}

package com.client;import org.jboss.netty.channel.ChannelHandlerContext;import org.jboss.netty.channel.ChannelStateEvent;import org.jboss.netty.channel.ExceptionEvent;import org.jboss.netty.channel.MessageEvent;import org.jboss.netty.channel.SimpleChannelHandler;/** * 消息接受处理类 */public class ClientHandler extends SimpleChannelHandler { ???/** ????* 接收消息 ????*/ ???@Override ???public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception { ???????String s = (String) e.getMessage(); ???????System.out.println(s); ???????super.messageReceived(ctx, e); ???} ???/** ????* 捕获异常 ????*/ ???@Override ???public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) throws Exception { ???????System.out.println("exceptionCaught"); ???????super.exceptionCaught(ctx, e); ???} ???/** ????* 新连接 ????*/ ???@Override ???public void channelConnected(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception { ???????System.out.println("channelConnected"); ???????super.channelConnected(ctx, e); ???} ???/** ????* 必须是链接已经建立，关闭通道的时候才会触发。服务端关闭了也调用。 ????*/ ???@Override ???public void channelDisconnected(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception { ???????System.out.println("channelDisconnected"); ???????super.channelDisconnected(ctx, e); ???} ???/** ????* channel关闭的时候触发，服务端关闭了也调用。 ????*/ ???@Override ???public void channelClosed(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception { ???????System.out.println("channelClosed"); ???????super.channelClosed(ctx, e); ???}}

package com.server;import java.net.InetSocketAddress;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;import org.jboss.netty.bootstrap.ServerBootstrap;import org.jboss.netty.channel.ChannelPipeline;import org.jboss.netty.channel.ChannelPipelineFactory;import org.jboss.netty.channel.Channels;import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;import org.jboss.netty.handler.codec.string.StringDecoder;import org.jboss.netty.handler.codec.string.StringEncoder;/** * netty服务端入门 *//* netty版本大致版本分为 ?netty3.x ?和 ?netty4.x、netty5.xnetty可以运用的领域：1分布式进程通信hadoop、dubbo、akka等具有分布式功能的框架，只要是java的，底层RPC通信都是基于netty实现的，这些框架使用的版本通常都还在用netty3.x2、游戏服务器开发页游手游都是java,服务器是netty或者mina，最新的游戏服务器有部分公司可能已经开始采用netty4.x 或 netty5.x*/public class Server { ???public static void main(String[] args) { ???????//服务类 ???????ServerBootstrap bootstrap = new ServerBootstrap(); ???????//boss线程监听端口，worker线程负责数据读写 ???????ExecutorService boss = Executors.newCachedThreadPool(); ???????ExecutorService worker = Executors.newCachedThreadPool(); ???????//设置niosocket工厂，boss和worker线程都会分配一个selector,boss的selector负责监听端口，worker的selector负责读写任务。 ???????bootstrap.setFactory(new NioServerSocketChannelFactory(boss, worker)); ???????//设置管道的工厂 ???????bootstrap.setPipelineFactory(new ChannelPipelineFactory() { ???????????//管道里面装的是过滤器， ???????????@Override ???????????public ChannelPipeline getPipeline() throws Exception { ???????????????ChannelPipeline pipeline = Channels.pipeline(); ???????????????//传的不是字符，是字节流。 ???????????????//StringEncoder/StringDecoder就不用在接收消息的地方把ChannelBuffer转成string了。 ???????????????pipeline.addLast("decoder", new StringDecoder());//StringDecoder是上行的管道。 ???????????????pipeline.addLast("encoder", new StringEncoder());//StringEncoder是下行的管道。 ???????????????pipeline.addLast("helloHandler", new ServerHandler());//ServerHandler是上行和下行管道。 ???????????????return pipeline; ???????????} ???????}); ???????bootstrap.bind(new InetSocketAddress(10101));//接收消息在HelloHandler ???????System.out.println("start!!!"); ???}}

package com.server;import org.jboss.netty.buffer.ChannelBuffer;import org.jboss.netty.channel.ChannelHandlerContext;import org.jboss.netty.channel.ChannelStateEvent;import org.jboss.netty.channel.ExceptionEvent;import org.jboss.netty.channel.MessageEvent;import org.jboss.netty.channel.SimpleChannelHandler;/** * 消息接受处理类 */public class ServerHandler extends SimpleChannelHandler { ???/** ????* 接收消息 ????*/ ???@Override ???public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception { ???????String s = (String) e.getMessage(); ???????/*ChannelBuffer message = (ChannelBuffer)e.getMessage(); ???????String s = new String(message.array());*/ ???????System.out.println(s); ???????//回写数据 ???????ctx.getChannel().write("hi"); ???????super.messageReceived(ctx, e); ???} ???/** ????* 捕获异常 ????*/ ???@Override ???public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) throws Exception { ???????System.out.println("exceptionCaught"); ???????super.exceptionCaught(ctx, e); ???} ???/** ????* 新连接，通常用来检测IP是否是黑名单 ????*/ ???@Override ???public void channelConnected(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception { ???????System.out.println("channelConnected"); ???????super.channelConnected(ctx, e); ???} ???/** ????* 必须是链接已经建立成功，关闭通道的时候才会触发，先触发channelDisconnected在触发channelClosed。 ????* ?????* 可以再用户断线的时候清楚用户的缓存数据等 ????*/ ???@Override ???public void channelDisconnected(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception { ???????System.out.println("channelDisconnected"); ???????super.channelDisconnected(ctx, e); ???} ???/** ????* 就算没有建立成功，channel关闭的时候触发 ????* ?????* 可以再用户断线的时候清楚用户的缓存数据等 ????*/ ???@Override ???public void channelClosed(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception { ???????System.out.println("channelClosed"); ???????super.channelClosed(ctx, e); ???}}