Question

我在测试中使用mina udp，服务器和客户端都在同一台计算机上，客户端和服务器运行时没有抛出异常，但是服务器无法接收消息。代码是

public class SmsClient extends IoHandlerAdapter {

    private final static Logger logger = LoggerFactory.getLogger("sms");

    private IoSession session;

    private IoConnector connector;

    public SmsClient(final String phone, final String content) {
        connector = new NioDatagramConnector();
        DefaultIoFilterChainBuilder chain = connector.getFilterChain();
        chain.addLast("myChin", new ProtocolCodecFilter(
                new TextLineCodecFactory(Charset.forName("UTF-8"))));
        chain.addLast("logger", new LoggingFilter());
        connector.setHandler(this);

         String ip = "127.0.0.1";
        String port = "8080";


        ConnectFuture connFuture = connector.connect(new InetSocketAddress(ip,
                Integer.valueOf(port)));

        connFuture.awaitUninterruptibly();
        connFuture.addListener(new IoFutureListener<ConnectFuture>() {
            public void operationComplete(ConnectFuture future) {
                if (future.isConnected()) {
                    session = future.getSession();
                    try {
                        sendData(phone, content);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                } else {
                    try {
                        throw new Exception("connect failed....");
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
        });
    }

    private void sendData(String phone, String content)
            throws InterruptedException {


        String s = "K&" + phone + "&" + content;


        logger.info(s);

        Charset c = Charset.forName("utf-8");

        byte[] b = s.getBytes(c);
        IoBuffer buffer = IoBuffer.allocate(b.length, false);
        buffer.put(b);
        buffer.flip();
        session.write(buffer);
    }

    @Override
    public void exceptionCaught(IoSession session, Throwable cause)
            throws Exception {
        cause.printStackTrace();
        System.out.println("exceptionCaught.................");
        session.close(true);
    }

    @Override
    public void messageReceived(IoSession session, Object message)
            throws Exception {
        System.out.println("messageReceived................."+message);

    }

  public static void main(String[] args) {
    new SmsClient("18610413435", "hiii");
  }
}

公共类SmsServer实现了IoHandler {

public void initUDPServer(){
    NioDatagramAcceptor acceptor = new NioDatagramAcceptor();
    DatagramSessionConfig dcfg = acceptor.getSessionConfig();
    try {
        acceptor.setHandler(this);
        acceptor.bind(new InetSocketAddress(8080));
        DefaultIoFilterChainBuilder chain = acceptor.getFilterChain();
        chain.addLast("encode", new ProtocolCodecFilter(
                new TextLineCodecFactory(Charset.forName("UTF-8"))
                ));
        chain.addLast("logger", new LoggingFilter());
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}
public void sessionCreated(IoSession session) throws Exception {
    SocketAddress remoteAddress = session.getRemoteAddress();
}


public void messageReceived(IoSession session, Object message)
        throws Exception {
    SocketAddress remoteAddress = session.getRemoteAddress();

    System.out.println(message);
    if (message instanceof IoBuffer) {
        IoBuffer buffer = (IoBuffer) message;
        String sendContent = "hello";
        byte[]b = sendContent.getBytes(Charset.forName("utf-8"));
        IoBuffer ioBuffer = IoBuffer.allocate(sendContent.length(),false);
        ioBuffer.put(b);
        ioBuffer.flip();

        session.write(ioBuffer, remoteAddress);
    }

}
public static void main(String[] args) {
     new SmsServer().initUDPServer();
  }

}

你可以帮我找一下错误的代码吗？感谢您的任何建议和帮助！

Answer 1

要使此示例有效，请从SmsServer类的方法initUDPServer（）中删除ProtocolCodecFilter行：

        chain.addLast("encode", new ProtocolCodecFilter(
            new TextLineCodecFactory(Charset.forName("UTF-8"))
            ));

并从SmsClient类的构造函数中删除ProtocolCodecFilter行：

    chain.addLast("myChin", new ProtocolCodecFilter(
            new TextLineCodecFactory(Charset.forName("UTF-8"))));

通过此修改，这是客户端日志：

2015-10-18 19：01：26,021 0 [NioProcessor-2] INFO LoggingFilter - CREATED

2015-10-18 19：01：26,022 1 [NioProcessor-2] INFO LoggingFilter - OPENED

2015-10-18 19：01：26,023 2 [主要] INFO短信 - K＆amp; 18610413435＆amp; hiii

2015-10-18 19：01：26,031 10 [NioProcessor-2] INFO LoggingFilter - SENT：HeapBuffer [pos = 0 lim = 18 cap = 18：4B 26 31 38 36 31 30 34 31 33 34 33 35 26 68 69 ...]

2015-10-18 19：01：26,052 31 [NioProcessor-2] INFO LoggingFilter - RECEIVED：HeapBuffer [pos = 0 lim = 5 cap = 2048：68 65 6C 6C 6F]   messageReceived ................. HeapBuffer [pos = 0 lim = 5 cap = 2048：68 65 6C 6C 6F]

这是服务器日志：

2015-10-18 19：01：26,046 0 [NioDatagramAcceptor-1] INFO LoggingFilter - CREATED

2015-10-18 19：01：26,048 2 [NioDatagramAcceptor-1] INFO LoggingFilter - OPENED

2015-10-18 19：01：26,049 3 [NioDatagramAcceptor-1] INFO LoggingFilter - RECEIVED：HeapBuffer [pos = 0 lim = 18 cap = 2048：4B 26 31 38 36 31 30 34 31 33 34 33 35 26 68 69 ...]   HeapBuffer [pos = 0 lim = 18 cap = 2048：4B 26 31 38 36 31 30 34 31 33 34 33 35 26 68 69 ...]

2015-10-18 19：01：26,051 5 [NioDatagramAcceptor-1] INFO LoggingFilter - SENT：HeapBuffer [pos = 0 lim = 5 cap = 5：68 65 6C 6C 6F]   2015-10-18 19：02：26,053 60007 [ExpiringMapExpirer-1] INFO LoggingFilter - CLOSED

udp服务器不接受mina的消息

1 个答案: