通过以太网进行客户端通信

Question

我是Android的新手，我正在研究从服务器发送到客户端的项目，我发现互联网上的代码，我想修改它 1-它可以发送数字而不是字符串 2-它可以从服务器连续发送

服务器

    /*
 * This is a simple server application
 * This server receive a string message from the Android mobile phone
 * and show it on the console.
 * Author by Lak J Comspace
 */
package simpleserver;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;

public class Main {

    private static ServerSocket serverSocket;
    private static Socket clientSocket;
    private static InputStreamReader inputStreamReader;
    private static BufferedReader bufferedReader;
    private static String message;

    public static void main(String[] args) {

        try {
            serverSocket = new ServerSocket(4444);  //Server socket
        } catch (IOException e) {
            System.out.println("Could not listen on port: 4444");
        }

        System.out.println("Server started. Listening to the port 4444");

        while (true) {
            try {
                clientSocket = serverSocket.accept();   //accept the client connection
                inputStreamReader = new InputStreamReader(clientSocket.getInputStream());
                bufferedReader = new BufferedReader(inputStreamReader); //get the client message
                message = bufferedReader.readLine();

                System.out.println(message);
                inputStreamReader.close();
                clientSocket.close();

            } catch (IOException ex) {
                System.out.println("Problem in message reading");
            }
        }

    }
}

客户端

<i> 
/*
 * This is a simple Android mobile client
 * This application read any string messege typed on the text field and 
 * send it to the server when the Send button is pressed
 * Author by Lak J Comspace
 */

package lakj.comspace.simpleclient;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class SimpleClientActivity extends Activity {

    private Socket client;
    private PrintWriter printwriter;
    private EditText textField;
    private Button button;
    private String messsage;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        textField = (EditText) findViewById(R.id.editText1); //reference to the text field
        button = (Button) findViewById(R.id.button1);   //reference to the send button

        //Button press event listener
        button.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {

                messsage = textField.getText().toString(); //get the text message on the text field
                textField.setText("");      //Reset the text field to blank

                try {

                    client = new Socket("10.0.2.2", 4444);  //connect to server
                    printwriter = new PrintWriter(client.getOutputStream(), true);
                    printwriter.write(messsage);  //write the message to output stream

                    printwriter.flush();
                    printwriter.close();
                    client.close();   //closing the connection

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

    }
}
</i>