Android客户端通过socket与服务器通信.doc

Android客户端通过socket与服务器通信下面是一个demo,Android客户端通过socket与服务器通信。由于Android里面可以完全使用java.io.*包和.*包，那么，实际上，逻辑部分与J2SE没有区别。只是UI代码不一样。Android客户端通过socket与服务器通信分为下面5步：（1）通过IP地址和端口实例化Socket，请求连接服务器； view plaincopy to clipboardprint?socket = new Socket(27,54321); /IP：27，端口54321 socket = new Socket(27,54321); /IP：27，端口54321 （2）获取Socket流以进行读写，并把流包装进BufferWriter或者PrintWriterview plaincopy to clipboardprint?PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream(),true); PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream(),true); 这里涉及了三个类：socket.getOutputStream得到socket的输出字节流，OutputStreamWriter是字节流向字符流转换的桥梁，BufferWriter是字符流，然后再包装进PrintWriter。（3）对Socket进行读写view plaincopy to clipboardprint?out.println(message); out.println(message); （4）关闭打开的流view plaincopy to clipboardprint?out.close(); out.close(); 完整工程代码如下：view plaincopy to clipboardprint?package com.yarin.android.Examples_08_04; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.io.PrintWriter; import .Socket; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class Activity01 extends Activity private final String DEBUG_TAG = Activity01; private TextView mTextView = null; private EditText mEditText = null; private Button mButton = null; /* Called when the activity is first created. */ Override public void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.main); mButton = (Button)findViewById(R.id.Button01); mTextView = (TextView)findViewById(R.id.TextView01); mEditText = (EditText)findViewById(R.id.EditText01); /登陆 mButton.setOnClickListener(new OnClickListener() public void onClick(View v) Socket socket = null; String message = mEditText.getText().toString() + /r/n; try /创建Socket / socket = new Socket(10,54321); socket = new Socket(27,54321); /IP：27，端口54321 /向服务器发送消息 PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream(),true); out.println(message); /接收来自服务器的消息 BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream(); String msg = br.readLine(); if ( msg != null ) mTextView.setText(msg); else mTextView.setText(数据错误!); /关闭流 out.close(); br.close(); /关闭Socket socket.close(); catch (Exception e) / TODO: handle exception Log.e(DEBUG_TAG, e.toString(); ); 布局文件main.xmlview plaincopy to clipboardprint? AndroidManifest.xml文件如下view plaincopy to clipboardprint? 当然，还有服务器端得代码view plaincopy to clipboardprint?package com.yarin.android.Examples_08_04; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.io.PrintWriter; import .ServerSocket; import .Socket; public class Server implements Runnable public void run() try /创建ServerSocket ServerSocket serverSocket = new ServerSocket(54321); while (true) /接受客户端请求 Socket client = serverSocket.accept(); System.out.println(accept); try /接收客户端消息 BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream(); String str = in.readLine(); System.out.println(read: + str); /向服务器发送消息 PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(client.getOutputStream(),true); out.println(server message); /关闭流 out.close(); in.close(); catch (Exception e) System.out.println(e.getMessage(); e.printStackTrace(); finally /关闭 client.close(); System.out.pri