Android客户端与服务端通信乱码问题的解决

在Android客户端与服务器端通信的过程中，使用输入流，输出流。readUTF(Str)和writeUTF(Str)方法能有效解决乱码问题。

以下为源码例子

客户端：
package com.socket.client;


import java.io.*;
import java.net.Socket;
import java.net.UnknownHostException;
import android.app.Activity;
import android.os.Bundle;
import android.os.Message;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class main extends Activity implements OnClickListener{
    /** Called when the activity is first created. */
//定义声明需要用到的UI元素
private EditText edtmsgcontent;
private Button btnSend;
Socket s = null;//声明Socket的引用
DataOutputStream dout = null;//输出流
DataInputStream din = null;//输入流

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.main);
        InitView();
    }
    private void InitView()
    {
    //显示主界面
    setContentView(R.layout.main);
   
    //通过id获取ui元素对象
    edtmsgcontent=(EditText)findViewById(R.id.msgcontent);
    btnSend=(Button)findViewById(R.id.btnsend);
   
    //为btnsend设置点击事件
    btnSend.setOnClickListener(this);
    }
   
    public void onClick(View bt)
    {
    try{//连接网络并打开流
        s = new Socket("192.168.10.141", 9998);
        dout = new DataOutputStream(s.getOutputStream());
        din = new DataInputStream(s.getInputStream());
}catch(Exception e){//捕获异常
e.printStackTrace();//打印异常
}
String u_distext = edtmsgcontent.getText().toString();//描述
String msg = u_distext;

try {
dout.writeUTF(msg);//向服务器发送注册消息
// String msg2 = din.readUTF();//接收服务器发送来的消息

} catch (IOException e) {//捕获异常
e.printStackTrace();//打印异常
} finally{
try{
if(dout != null){
dout.close();
dout = null;
}
}
catch(Exception e){//捕获异常
e.printStackTrace();//打印异常信息
}
try{
if(din != null){
din.close();
din = null;
}
}
catch(Exception e){//捕获异常
e.printStackTrace();//打印异常信息
}



}
   
}}



服务器端：

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;

public class TCPDesktopServer implements Runnable{


    public static final String SERVERIP = "192.168.10.141";

    public static final int SERVERPORT = 9998;
   
    DataInputStream din = null;//输入流
DataOutputStream dout = null;//输出流




    public void run() {

         try {

             System.out.println("S: Connecting...");

             ServerSocket serverSocket = new ServerSocket(SERVERPORT);
        
                 while (true) {
        
                  Socket client = serverSocket.accept();
                 
                  din=new DataInputStream(client.getInputStream());//输入流
        dout=new DataOutputStream(client.getOutputStream());//输入出流
                 
                  /*
                   *
                   *
                   * 此处增加一个获得用户数据（用户名）的模块。
                   * 令UserData=(User name)
                   * 并将其id和用户名加入到List中
                   *
                   *
                   */

                  System.out.println("S: Receiving...");

                  try {
                
                String msg=din.readUTF();//收消息
      System.out.println("Client msg = " + msg);
                    } catch(Exception e) {

                        System.out.println("S: Error");

                        e.printStackTrace();

                    } finally {

                        client.close();

                        System.out.println("S: Done.");

                    }

             }

          } catch (Exception e) {

             System.out.println("S: Error");

             e.printStackTrace();
         }
       
         
    }

   public static void main (String a[]) {

        Thread desktopServerThread = new Thread(new TCPDesktopServer());

        desktopServerThread.start();
    }
}

 

 

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