java - 无法使用 netty 发送对象

Question

我已经使用了一些示例来发送和接收字符串，它们运行良好。问题是我试图调整代码(阅读 api 和示例)来发送可序列化的对象，但它们不起作用。我没有收到任何错误消息，从未调用 channel 读取方法，因此服务器永远不会收到消息。我读到它可能与某种分隔符有关，但我找不到任何相关线索

这是代码，我不会包括添加和删除的处理程序，因为它们有效

服务器初始化器

protected void initChannel(SocketChannel arg0) throws Exception {
    ChannelPipeline pipeline = arg0.pipeline();
    pipeline.addLast("decoder", new ObjectDecoder(null));
    pipeline.addLast("encoder", new ObjectEncoder());
    pipeline.addLast("handler", new ChatServerHandler());
}

channel 阅读

public void channelRead0(ChannelHandlerContext arg0, Message message)
        throws Exception {
    Channel incoming = arg0.channel();
    System.out.println("received "+ message.getContent() + "from " + message.getSender() + "\r\n" );            

}

运行服务器

public void run() throws InterruptedException{
    EventLoopGroup bossGroup = new NioEventLoopGroup();
    EventLoopGroup workerGroup = new NioEventLoopGroup();

    try{
        ServerBootstrap bootstrap = new ServerBootstrap()
        .group(bossGroup, workerGroup)
        .channel(NioServerSocketChannel.class)
        .childHandler(new ChatServerInitializer());         
        bootstrap.bind(port).sync().channel().closeFuture().sync();

    }

这是客户端

protected void initChannel(SocketChannel arg0) throws Exception {
    ChannelPipeline pipeline = arg0.pipeline();


    pipeline.addLast("decoder", new ObjectDecoder(null));
    pipeline.addLast("encoder", new ObjectEncoder());
    pipeline.addLast("handler", new ChatClientHandler());

}

和主(服务器说客户端连接)

public void run(){
    EventLoopGroup group = new NioEventLoopGroup();
    try {
            Bootstrap bootstrap = new Bootstrap()
                .group(group)
                .channel(NioSocketChannel.class)
                .handler(new ChatClientInitializer());

            Channel channel = bootstrap.connect(host,port).sync().channel();
            BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
            Message message = new Message();
            message.setReceiver("user");
            message.setSender("user 2");
                    try {
                        message.setContent(in.readLine());

                        channel.write(message);

                        System.out.println("Sent " + System.currentTimeMillis());
                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }

最后，没有get/set的消息类

public class Message implements Serializable {

private static final long serialVersionUID = 1L;
private String sender;
private String receiver;
private String content;
public Message(String sender, String receiver, String content){     
    this.setSender(sender);
    this.setReceiver(receiver);
    this.setContent(content);       
}

非常感谢您的宝贵时间

Answer 1

检查从写操作返回的 ChannelFuture。我敢打赌它失败了。