java - 套接字的输入字节流包装在两种不同的流类型中？

Question

我正在尝试实现这样一个协议(protocol):

Client side: 1) client sends     command (String) 2) client sends     object 3) client receives  object or data   [depends on command]Server side: 1) server reads     command (String) 2) server receives  object           [type depends on command] 3) server sends     object or data   [depends on command]

On client side, I'm doing something like this (program blocks on line, marked with "!!!"):

/** Retrieves required wrapper streams */
private void getSocketStreams() {
    try {
        inputStream         = new DataInputStream(
                                    connection.getInputStream());

        /* !!! here is a problem: can I do next line's stuff? */
        inputObjectStream   = new ObjectInputStream(
                                    connection.getInputStream());

        outputWriter        = new BufferedWriter(
                                new OutputStreamWriter(
                                    connection.getOutputStream()));
        outputObjectStream  = new ObjectOutputStream(
                                    connection.getOutputStream());
    } catch (IOException e) {
        e.printStackTrace();
    }
}

/** "put" command processor */
private int processCmdPut(OrderInfo orderInfo) {

    /* Send command to peer */
    try {
        outputWriter.write("put");
        outputWriter.newLine();
        outputWriter.flush();
    } catch (IOException e) {
        e.printStackTrace();
    }

    /* Send inserted object to peer */
    sendObject(orderInfo);

    /* Get from peer inserted info id */
    int id = -1;
    try {
        id = inputStream.readInt();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return id;
}


/**
 * Sends object to peer.
 * @param obj object to send.
 */
public void sendObject(Object obj){
    try {
        outputObjectStream.writeObject(obj);
        outputObjectStream.flush();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

服务器端操作镜像客户端。

关于line的问题，标有“!!!”:是否可以包装socket的字节流使用两个不同的高级流并轮流读/写它们(一一)？我错了吗？我的理解有误吗？

Answer 1

缓冲往往会使使用不同的装饰器链变得困难。您确实不想在同一流上混合文本和二进制数据。我建议以与二进制数据相同的格式编写文本。