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();
}
}

注：博客涉及的源码请在千寻资源库：www.qxzyk.com 下载获取，谢谢支持。

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