Java Socket Server不读行(Java Socket Server not reading Line)

 我有以下服务器： 
 
public final class Server implements Runnable {
    private ServerSocket serverSocket;
    private Socket socket;
    private BufferedReader in;
    private PrintWriter out;

    Server() {
        Thread thread = new Thread(this);
        thread.start();
    }

    @Override
    public void run() {
        boolean running = true;
        try {
            serverSocket = new ServerSocket(5000);
            socket = serverSocket.accept();
            in = new BufferedReader(new InputStreamReader(socket.getInputStream()));

            while (running) {
                String data = in.readLine();
                System.out.println(data);
                if (data.equals("quit")) {
                    running = false;
                }
            }
        } catch (IOException e) {
            System.err.println(e);
        }
    }
}
 
 并关注客户： 
 
public class Client {
    private Socket socket;
    private PrintWriter out;

    public Client() {
        socket = null;

        try {
            socket = new Socket("127.0.0.1", 5000);
            out = new PrintWriter(socket.getOutputStream());
        } catch (final UnknownHostException e) {
            System.err.println("Address unknown "
                               + e.getMessage());
        } catch (final IOException e) {
            System.err.println("Error connecting to the Server "
                               + e.getMessage());
        }
    }

    public void sendMessage(String msg) {
        out.println(msg);
    }
}
 
 我能够建立初始连接，但只要执行sendMessage()方法，服务器就不会打印任何内容。 你知道为什么我收不到消息吗？ 

I have following Server:
 
public final class Server implements Runnable {
    private ServerSocket serverSocket;
    private Socket socket;
    private BufferedReader in;
    private PrintWriter out;

    Server() {
        Thread thread = new Thread(this);
        thread.start();
    }

    @Override
    public void run() {
        boolean running = true;
        try {
            serverSocket = new ServerSocket(5000);
            socket = serverSocket.accept();
            in = new BufferedReader(new InputStreamReader(socket.getInputStream()));

            while (running) {
                String data = in.readLine();
                System.out.println(data);
                if (data.equals("quit")) {
                    running = false;
                }
            }
        } catch (IOException e) {
            System.err.println(e);
        }
    }
}
 
and following Client:
 
public class Client {
    private Socket socket;
    private PrintWriter out;

    public Client() {
        socket = null;

        try {
            socket = new Socket("127.0.0.1", 5000);
            out = new PrintWriter(socket.getOutputStream());
        } catch (final UnknownHostException e) {
            System.err.println("Address unknown "
                               + e.getMessage());
        } catch (final IOException e) {
            System.err.println("Error connecting to the Server "
                               + e.getMessage());
        }
    }

    public void sendMessage(String msg) {
        out.println(msg);
    }
}
 
I am able to establish an initial connection, but as soon as I execute the sendMessage() Method, the server doesn't print out anything. Do you know why I cannot receive a message?

原文：https://stackoverflow.com/questions/48589851