Netty实现简单聊天室

Netty实现简单聊天室

服务端：

public class Server {int port;public Server(int port) throws InterruptedException {this.port = port;start_Server();}public void start_Server() throws InterruptedException {EventLoopGroup boos = new NioEventLoopGroup();EventLoopGroup worker = new NioEventLoopGroup();ServerBootstrap serverBootstrap = new ServerBootstrap();serverBootstrap.group(boos, worker).channel(NioServerSocketChannel.class).childHandler(new ChannelInitializer<Channel>() {@Overrideprotected void initChannel(Channel arg0) throws Exception {arg0.pipeline().addLast(new StringEncoder());arg0.pipeline().addLast(new StringDecoder());arg0.pipeline().addLast(new ServerHandler());}});ChannelFuture channelFuture = serverBootstrap.bind(port).sync();System.out.println("Server.start_Server()");channelFuture.channel().closeFuture().sync();}public static void main(String[] args) throws InterruptedException {Server server = new Server(9978);}}

服务端处理：

public class ServerHandler extends SimpleChannelInboundHandler<String>{/* * 对channel进行管理 */public static final ChannelGroup group = new DefaultChannelGroup(        GlobalEventExecutor.INSTANCE);@Overrideprotected void channelRead0(ChannelHandlerContext arg0, String arg1) throws Exception {Channel channel = arg0.channel();for(Channel ch :group) {if (ch==channel) {arg0.writeAndFlush("[你说]:"+arg1+"\n");} else {arg0.writeAndFlush("["+channel.remoteAddress()+"]"+arg1+"\n");}}}/** * 上线 */@Overridepublic void channelActive(ChannelHandlerContext ctx) throws Exception {Channel channel = ctx.channel();System.out.println("["+channel.remoteAddress()+"]"+"线上");}/** * 下线 */@Overridepublic void channelInactive(ChannelHandlerContext ctx) throws Exception {Channel channel = ctx.channel();System.out.println("["+channel.remoteAddress()+"]"+"下线");}@Overridepublic void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {System.out.println(            "[" + ctx.channel().remoteAddress() + "]" + "exit the room");    ctx.close().sync();}/** * 当有新的连接的时候进行通知 */@Overridepublic void handlerAdded(ChannelHandlerContext ctx) throws Exception {Channel channel = ctx.channel();for(Channel ch :group) {ctx.writeAndFlush( "[" + channel.remoteAddress() + "] " + "上线了");}group.add(channel);}@Overridepublic void handlerRemoved(ChannelHandlerContext ctx) throws Exception { Channel channel = ctx.channel();    for (Channel ch : group) {        ch.writeAndFlush(                "[" + channel.remoteAddress() + "] " + "is comming");    }    group.remove(channel);}}

客户端：

public class Client {int port;public Client(int port) throws InterruptedException, IOException {this.port = port;connect();}public void connect() throws InterruptedException, IOException {EventLoopGroup eventLoopGroup = new NioEventLoopGroup();Bootstrap bootstrap = new Bootstrap();bootstrap.group(eventLoopGroup).channel(NioSocketChannel.class).handler(new ChannelInitializer<Channel>() {@Overrideprotected void initChannel(Channel arg0) throws Exception { ChannelPipeline pipeline = arg0.pipeline();    pipeline.addLast("stringD", new StringDecoder());    pipeline.addLast("stringC", new StringEncoder());    pipeline.addLast("http", new HttpClientCodec());    pipeline.addLast("chat", new ClientHandler());}});Channel channel = bootstrap.connect("127.0.0.1",port).sync().channel();  while (true) {            BufferedReader reader = new BufferedReader(                    new InputStreamReader(System.in));            String input = reader.readLine();            if (input != null) {                if ("quit".equals(input)) {                    System.exit(1);                }                channel.writeAndFlush(input);            }        }}public static void main(String[] args) throws InterruptedException, IOException {Client client = new Client(9978);}}

客户处理：

public class ClientHandler extends SimpleChannelInboundHandler<String>{@Overrideprotected void channelRead0(ChannelHandlerContext arg0, String arg1) throws Exception {System.out.println(arg1);}}