Question

我已经稳定了客户端和服务器之间的套接字连接，但是现在我试图让服务器在他收到特定消息（“ FIM”）时关闭连接，到目前为止，我还没有运气。我一直发送“ FIM”消息，但连接没有关闭

此处提供代码：

class Cliente {
    public static void main(String argv[]) throws UnknownHostException, IOException {
        InetAddress ip = InetAddress.getLocalHost();
        String hostName = ip.getHostName();
        Socket meuSocket = new Socket(hostName, 6789);

        PrintWriter saida = new PrintWriter(meuSocket.getOutputStream(), true);
        BufferedReader digitado = new BufferedReader(new InputStreamReader(System.in));

        while (meuSocket.isConnected()) {
            String mensagemParaServidor = digitado.readLine();
            if (mensagemParaServidor == "FIM") {
                meuSocket.close();
                break;
            }
            saida.println(mensagemParaServidor);
        }
    }
}

class Servidor {
    public static final int PORT = 6789;

    public static void main(String argv[]) throws IOException {
        new Servidor().rodarServidor();
    }

    public void rodarServidor() throws IOException {
        ServerSocket serverSocket = new ServerSocket(PORT);
        System.out.println("Servidor pronto");

        while (true) {
            Socket meuSocket = serverSocket.accept();
            new ServerThread(meuSocket).start();
        }
    }

}

public class ServerThread extends Thread {
    Socket meuSocket;

    ServerThread(Socket meuSocket) {
        this.meuSocket = meuSocket;
    }

    public void run() {

        try {
            String mensagemRecebida = null;
            BufferedReader entrada = new BufferedReader(new InputStreamReader(meuSocket.getInputStream()));

            while (((mensagemRecebida = entrada.readLine()) != null)
                || ((mensagemRecebida = entrada.readLine()) != "FIM")) {
                System.out.println("Cliente enviou: " + mensagemRecebida);
                DataOutputStream saida = new DataOutputStream(meuSocket.getOutputStream());
                saida.writeBytes("Obrigado!");
            }
            System.out.println("Fechando servidor");
            meuSocket.close();

        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

谢谢！

Answer 1

请勿将搅拌与==进行比较，而应使用等号。

仅使用readLine是个坏主意。最好将字符串打包成某种消息并发送整个消息。因此，另一端可以确定消息的结尾和开头。例如，第一个字节可以是下一个消息长度。另外，您在ServerThread中两次调用readLine

如何关闭带有特定消息的套接字？

1 个答案: