如何將數據從TCP套接字獲取到ByteBuffer

Question

我需要從套接字獲取傳入的數據到ByteBuffer中，但我不知道該怎么做。 我是該領域的新手，因此不確定最好的入門方法。 我發現了以下內容，但這不是我想要的，因為它可以使數據保持一致，但是我需要將所有數據放在字節緩沖區中以用於其他目的。

ServerSocket welcomeSocket = new ServerSocket(Integer.parseInt(ibmPort));
while (true) {
    Socket connectionSocket = welcomeSocket.accept();                   
    BufferedReader inFromClient =  new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
    DataOutputStream outToClient = new DataOutputStream(connectionSocket.getOutputStream());
    clientSentence = inFromClient.readLine();
    System.out.println("Received: " + clientSentence);
    setRequestDataFromCT(clientSentence);
    capitalizedSentence = clientSentence.toUpperCase() + '\n';
    outToClient.writeBytes(capitalizedSentence);
}

Answer 1

此代碼將讀取所有字節並將其存儲在ByteBuffer中，您可能必須調整bufferSize來存儲所需的所有數據。

int bufferSize = 8192;
ServerSocket welcomeSocket = new ServerSocket(Integer.parseInt(ibmPort));
while (true) {
    Socket connectionSocket = welcomeSocket.accept();
    ByteBuffer bf = ByteBuffer.allocate(bufferSize);
    BufferedInputStream inFromClient = new BufferedInputStream(connectionSocket.getInputStream());
    while (true) {
        int b = inFromClient.read();
        if (b == -1) {
            break;
        }
        bf.put( (byte) b);
    }
    connectionSocket.close();
}

Answer 2

int count = SocketChannel.read(ByteBuffer). 不知道為什么不使用SocketChannels為什么要添加'socketchannel'標記，但這是這樣做的方法。

Answer 3

        ServerSocket welcomeSocket = new ServerSocket(Integer.parseInt(ibmPort));
        while (true) {
            Socket connectionSocket = welcomeSocket.accept();
            InputStream stream = connectionSocket.getInputStream();
            byte[] data = new byte[1024];
            int count = stream.read(data);
            ByteBuffer bb = ByteBuffer.allocate(data.length);
            bb.put(data);
            bb.flip();
        }