Socket通常也称做”套接字“，用于描述IP地址和端口，它就是网络通信过程中端点的抽象表示。Java在包java.net中提供了两个类Socket和ServerSocket，分别用来表示双向连接的客户端和服务端。
- SocketServer类，服务器实现：
public class SocketServer { ServerSocket sever; public SocketServer(int port){ try{ sever = new ServerSocket(port); }catch(IOException e){ e.printStackTrace(); } } public void beginListen(){ while(true){ try{ final Socket socket = sever.accept(); new Thread(new Runnable(){ public void run(){ BufferedReader in; try{ in = new BufferedReader(new InputStreamReader(socket.getInputStream(),"UTF-8")); PrintWriter out = new PrintWriter(socket.getOutputStream()); while (!socket.isClosed()){ String str; str = in.readLine(); out.println("Hello!world!! " + str); out.flush(); if (str == null || str.equals("end")) break; System.out.println(str); } socket.close(); }catch(IOException e){ e.printStackTrace(); } } }).start(); }catch(IOException e){ e.printStackTrace(); } } } }
public class TestSocketServer { public static void main(String[] argvs){ SocketServer server = new SocketServer(12345); server.beginListen(); } }
客户端实现：
public class SocketClientDemo extends Activity implements Runnable { private TextView tv_msg = null; private EditText ed_msg = null; private Button btn_send = null; private static final String HOST = "192.168.1.223"; private static final int PORT = 12345; private Socket socket = null; private BufferedReader in = null; private PrintWriter out = null; private String content = ""; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); tv_msg = (TextView) findViewById(R.id.TextView); ed_msg = (EditText) findViewById(R.id.EditText01); btn_send = (Button) findViewById(R.id.Button01); try { socket = new Socket(HOST, PORT); in = new BufferedReader(new InputStreamReader(socket.getInputStream())); out = new PrintWriter(new BufferedWriter(new OutputStreamWriter( socket.getOutputStream())), true); } catch (IOException ex) { ex.printStackTrace(); ShowDialog("login exception" + ex.getMessage()); } btn_send.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub String msg = ed_msg.getText().toString(); if (socket.isConnected()) { if (!socket.isOutputShutdown()) { out.println(msg); } } } }); new Thread(SocketDemo.this).start(); } public void run() { try { while (true) { if (socket.isConnected()) { if (!socket.isInputShutdown()) { if ((content = in.readLine()) != null) { content += "\n"; Log.d("socket","socket:"+content); } else { } } } } } catch (Exception e) { e.printStackTrace(); } } }
注意在AndroidManifest.xml中加入对网络的访问权限
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
本文转自xyz_lmn51CTO博客，原文链接：http://blog.51cto.com/xyzlmn/1230758，如需转载请自行联系原作者
