java - 客户端的 BufferedReader 未使用套接字从服务器接收行(Java)

Question

我正在尝试在服务器和客户端之间创建一个聊天应用程序，它们是单独的类。我没有复制整个代码，但这是我不确定设置是否正确的部分:

服务器:

    ServerSocket s = null;
    Socket c = null;
    s = new ServerSocket(5002);

    c = s.accept();


    BufferedReader in = new BufferedReader(new InputStreamReader(c.getInputStream()))
    BufferedWriter out = new BufferedWriter(new OutputStreamWriter(c.getOutputStream()));

    out.flush();
    String line;
    line = in.readLine();
    out.write("#W|Welcome");
    line = in.readLine();
    out.write("#W|Welcome");
    line = in.readLine();
    out.write("#W|Welcome");

客户:

    Socket socket = new Socket("localhost", 5002);

    BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream  ()));
    BufferedWriter out = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));

    String line;
    out.flush();
    out.write("#J|test");
    line = in.readLine();
    out.write("#J|test");
    line = in.readLine();

客户端执行 out.println() 后，服务器的 in.readLine() 获取该行。但当情况相反时，客户端会在 in.readLine() 处继续等待。 (我使用调试器并观察服务器执行 out.println() 并跳过它，而客户端仍然停留在 in.readLine()。

我的数据流设置是否正确，或者我的代码在其他地方是否可能存在错误？我不确定如何检查调试器是否正确连接了流。

Answer 1

[引用我上面的评论:]

There is nothing here that [reads or] writes lines.

这仍然是事实。你所拥有的只是:

out.write("#W|Welcome");

等等

don't forget to call newLine() as necessary

你忘了。