springboot-netty框架搭建socket-websocket同端口服务端

项目需求：搭建服务与设备进行socket通信；与api服务端进行http请求(或websocket)通信传递消息；

项目环境：IDEA+Maven ;springboot；mybatis；netty；

1.服务端DiscardServer

/**
 * 丢弃任何进入的数据 启动服务端的DiscardServerHandler
 */
@Component
public class DiscardServer{
    public static class SingletionDiscardServer
    {
        static final DiscardServer instance=new DiscardServer();
    }
    public static DiscardServer getInstance(){
        return SingletionDiscardServer.instance;
    }

    private EventLoopGroup bossGroup ;
    private EventLoopGroup workerGroup;
    private ServerBootstrap server;
    private ChannelFuture future;

    protected Logger logger = LoggerFactory.getLogger(getClass());
    public void start(){
         bossGroup = new NioEventLoopGroup();// 用于处理客户端的连接请求
         workerGroup = new NioEventLoopGroup();//用于处理与各个客户端连接的 IO 操作

        try {
            server = new ServerBootstrap();
            //绑定处理group
            server = server.group(bossGroup, workerGroup)
                    .channel(NioServerSocketChannel.class)
                    //定义可连接的客户端队列大小
                    .option(ChannelOption.SO_BACKLOG, 128)
                    //有数据立即发送;积攒一定数据量再发送用TCP_CORK
                    .option(ChannelOption.TCP_NODELAY, true)
                    //保持连接，2小时内无数据通信TCP发送探测报文
                    .childOption(ChannelOption.SO_KEEPALIVE, true)
                    //允许重复使用本地地址和端口
                    .childOption(ChannelOption.SO_REUSEADDR, true)
                    //一个连接的远端关闭时本地端是否关闭，默认值为False。值为False时，
                    // 连接自动关闭；为True时，触发ChannelInboundHandler的userEventTriggered()方法，
                    // 事件为ChannelInputShutdownEvent
                    .childOption(ChannelOption.ALLOW_HALF_CLOSURE, true)
                    //处理新连接
                    .childHandler(new ChildChannelHandler());

            //异步地绑定服务器；
            // 调用sync()方法阻塞等待直到绑定完成
            future = server.bind(8090).sync();
            logger.info("服务器启动开始监听端口: 8090");
            //获取 Channel 的 CloseFuture，并且阻塞当前线程直到它完成
            future.channel().closeFuture().sync();

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            //优雅退出，释放线程资源
            workerGroup.shutdownGracefully();
            bossGroup.shutdownGracefully();
        }
    }

}

2.ChildChannelHandler

public class ChildChannelHandler extends ChannelInitializer<SocketChannel> {

    static final EventExecutorGroup group = new DefaultEventExecutorGroup(16);
    protected void initChannel(SocketChannel socketChannel) throws Exception {
        /* LineBasedFrameDecoder的工作原理是：依