为什么此套接字程序不传输数据?

| 我正在编写我的第一个套接字项目,但遇到了问题。客户端将字符串发送到服务器时,服务器无法收到此消息。
public class ClientActivity {

    public static final String serverIP = \"127.0.0.1\";
        private Socket clientSocket = null;
        private static BufferedOutputStream out = null;

    public static void main(String[] args) throws IOException {
        ClientActivity me = new ClientActivity();
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        out.write(\"Some string\");
    }

    public ClientActivity() throws UnknownHostException, IOException {
           clientSocket = new Socket(serverIP, serverPort);
           out = new BufferedOutputStream(clientSocket.getOutputStream());
    }
}
这是服务器的代码:
public class DataTransferServer {

    private ServerSocket serverSocket;
    private ArrayList<DataReaderThread> workingThreads;
    private Boolean isListening;
    private Thread listener;

    public static void main(String[] args) throws IOException {
        new DataTransferServer(IProtocolConstants.SERVER_PORT).startServer(); // FIXME
    }

    public DataTransferServer (int port) throws IOException {
        System.out.println(\"Launch\");
        serverSocket = new ServerSocket(port);
        workingThreads = new ArrayList<DataReaderThread>();
        isListening = true;
        listener = new ConnectionListener();
    }

    public void startServer() throws IOException {
        listener.start();
    }

    private class ConnectionListener extends Thread {
        @Override
        public void run() {
            DataReaderThread newThread  = null;
            while (isListening) {
                try {
                    newThread = new DataReaderThread(serverSocket.accept(), DataTransferServer.this);
                    newThread.start();
                    workingThreads.add(newThread);
                    System.out.println(\"! thread started\");
                } catch (IOException e) {
                    e.printStackTrace(); // FIXME
                }
            }
            if (newThread != null) {
                newThread.interrupt();
                newThread = null;
            }
        }
    }


}
这是监听器:
public class DataReaderThread extends Thread {
    private Socket socket = null;
    private BufferedInputStream in = null;
    private byte[] stuffBytes = null;

    public DataReaderThread(Socket socket) throws IOException {
        super(\"DataReaderThread\");
        this.socket = socket;
        in = new BufferedInputStream(socket.getInputStream());
stuffBytes = new byte[10];
    }

    public void run() {
        try {
            while (in.read(stuffBytes, 0, stuffBytes.length) != -1) {
System.out.println(\"Received data:\" + new String(stuffBytes));
            }
            in.close();
            socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public Socket getSocket() {
        return socket;
    }
    
已邀请:
我猜BufferedOutputStream“ 3”在缓冲区已满之前不会发送TCP数据包。 尝试在
write
之后调用
flush
立即发送数据:
out.write(\"Some string\");
out.flush();
您也可以考虑使用具有自动刷新机制的PrintWriter类。     
-1在发布之前编译代码...
public class ClientActivity {

    public void write(String data) {
       out.write(data.getBytes())
       out.flush()
    }

    public static final String serverIP = \"127.0.0.1\";
        private Socket clientSocket = null;
        private BufferedOutputStream out = null;

    public static void main(String[] args) throws IOException {
        ClientActivity me = new ClientActivity();
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        me.write(\"Some string\");
    }

    public ClientActivity() throws UnknownHostException, IOException {
           clientSocket = new Socket(serverIP, serverPort);
           out = new BufferedOutputStream(clientSocket.getOutputStream());
    }
}
    

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