netty配置如下：

@Slf4j
@Component
public class NettyServer implements CommandLineRunner {

    String WEBSOCKET_URI = "/device_room";

    @Override
    public void run(String... args) throws Exception {
        this.startServer();
    }

    public void startServer() throws Exception {
        EventLoopGroup boosGroup = new NioEventLoopGroup();
        EventLoopGroup workGroup = new NioEventLoopGroup();

        ServerBootstrap bootstrap = new ServerBootstrap();
        try {
            bootstrap.group(boosGroup, workGroup)
                    .channel(NioServerSocketChannel.class)
                    .option(ChannelOption.SO_BACKLOG, 128)
                    //设置保持活动连接状态
                    .childOption(ChannelOption.SO_KEEPALIVE, true)
                    //使用匿名内部类的形式初始化通道对象
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel socketChannel) throws Exception {
                            ChannelPipeline pipeline = socketChannel.pipeline();
                            //给pipeline管道设置处理器
                            pipeline.addLast(new HttpServerCodec());
                            pipeline.addLast(new WebSocketServerCompressionHandler());// WebSocket消息压缩处理器
                            pipeline.addLast(new ChunkedWriteHandler());
                            pipeline.addLast(new QueryParamExtractorHandler());// 参数校验
                            pipeline.addLast(new WebSocketServerProtocolHandler(WEBSOCKET_URI, null,
                                    true, 65535, true, true));// 添加WebSocket握手处理器
                            pipeline.addLast(new IdleStateHandler(10, 0, 0));// 监控读超时事件
                            pipeline.addLast(new HeartbeatHandler());
                            pipeline.addLast(new PubMessageHandler());
                        }
                    });//给workerGroup的EventLoop对应的管道设置处理器
            log.info("netty服务端启动...");
            //绑定端口号，启动服务端
            ChannelFuture channelFuture = bootstrap.bind(6666).sync();
            //对关闭通道进行监听
            channelFuture.channel().closeFuture().sync();
        }
        finally {
            boosGroup.shutdownGracefully();
            workGroup.shutdownGracefully();
        }
    }
}