3

我在android设备上使用以下代码作为客户端

/*
 * This is a simple Android mobile client
 * This application read any string message typed on the text field and
 * send it to the server when the Send button is pressed

 */
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();
        }
    }
});

}
}

并作为简单的java项目作为服务器端

/*
 * 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 client msg                    
            message = bufferedReader.readLine();

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

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

     }
}  

我使用简单的按钮将字符串从 Android 模拟器发送到 java 应用程序,但它给出了连接错误。我应该使用哪个端口和 ip 而不是代码中提到的......以及如何获得它请帮助我

以及如何修改此代码以将移动联系人从 android 发送到 PC?

4

2 回答 2

3

您的计算机的主机地址可能错误,如果您正在运行 Windows 机器,请转到开始菜单并在搜索框中输入“cmd”,您应该会看到一个黑框弹出窗口,输入“ipconfig”

在此处输入图像描述

因此,如果我要构建该应用程序,我将使用 IP 地址 10.0.0.129。使用从 9152 到 65535 的任何端口。您可能希望将 IP 地址设为静态,以便在您测试应用程序时它不会在您身上发生变化。按照本教程为您提供帮助http://www.howtogeek.com/howto/19249/how-to-assign-a-static-ip-address-in-xp-vista-or-windows-7/这将允许您在不更改计算机 IP 地址的情况下在本地网络上测试您的应用程序。

如果您想在本地网络之外使用此应用程序,您将需要租用专用服务器、设置 Java Web 服务器或使用您的机器作为服务器。要使用您的机器,您将需要一个静态 IP 地址或 DNS 服务,我使用http://dyn.com/dns/为我的计算机分配一个主机名,以便我可以随时随地使用我的计算机(只要它打开了)。另请注意,如果您确实选择使用计算机,则需要在路由器上设置端口转发。只需查找端口转发,您就会发现大量教程。

祝你好运。

于 2013-04-30T17:10:30.453 回答
1

Connect your device with same network then it should work.
Easy way is: Enable your device's hotspot and connect your PC on this(hotspot) network.
Don't forget to change the IP.

于 2013-05-01T03:44:03.987 回答