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() {

			@Override
			protected 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);
	@Override
	protected 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
	 */
	@Override
	public void channelActive(ChannelHandlerContext ctx) throws Exception {
				Channel channel = ctx.channel();
				System.out.println("["+channel.remoteAddress()+"]"+"线上");
	}
	
	/**
	 * 下线
	 */
	@Override
	public void channelInactive(ChannelHandlerContext ctx) throws Exception {
				Channel channel = ctx.channel();
				System.out.println("["+channel.remoteAddress()+"]"+"下线");
	}

	@Override
	public 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
		 */
	@Override
	public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
				Channel channel = ctx.channel();
				for(Channel ch :group) {
						ctx.writeAndFlush( "[" + channel.remoteAddress() + "] " + "上线了");
				}
				group.add(channel);
	}

	
	
	
	@Override
	public 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() {

			@Override
			protected 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>{

	@Override
	protected void channelRead0(ChannelHandlerContext arg0, String arg1) throws Exception {
		System.out.println(arg1);
	}
		
}