如何从客户端到服务器发送和接收多个数据

Question

I have established a connection between java server and android client using sockets. I can send messages from android to java, but only 1 message at a time. what if I want to send data of 2 variables from android to java and at the same time receive those data in java in 2 different variables. How can I achieve this.??

Code for Android Client

public class MessageClient extends Activity implements OnClickListener {

EditText etMessage;
Button bSend;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.messageclient);
    bSend = (Button) findViewById(R.id.button1);
    etMessage = (EditText) findViewById(R.id.etMessage);
    bSend.setOnClickListener(this);
}

@Override
public void onClick(View arg0) {

            try {
                Socket s = new Socket("192.168.0.100",7000);
                DataOutputStream  dos = new DataOutputStream(s.getOutputStream());
                dos.writeUTF(etMessage.getText().toString());
                dos.flush();
                dos.close();
                s.close();
            } catch (UnknownHostException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

}

Code for java server

public static void main(String arg[]){
Thread t =  new Thread(){

    public void run() {
        // TODO Auto-generated method stub

        try {
            ServerSocket ss = new ServerSocket(7000);

            while(true){

                Socket s = ss.accept();
                System.out.println("Server is running");
                DataInputStream dis = new DataInputStream(s.getInputStream());

                System.out.println("Received from client: "+dis.readUTF());

                dis.close();
                s.close();
            }

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }
   };
t.start();
}

Thank you.

Answer 1

您只是发送一个String然后关闭套接字。您可以尝试发送列表，也可以发送多个DataInputStream dis，而无需关闭套接字连接。