安卓手机与电脑Java客户端之间的socket通信，最终效果图如下：

下面给出代码：

 

电脑端：

 

 

public class Server {public static JTextArea textarea=new JTextArea();JTextField text;ActionListener l=new ActionListener() { @Overridepublic void actionPerformed(ActionEvent e) {Send send=new Send();send.go();}};public static void main(String[] args) {Server s=new Server();Accept a=new Accept();Thread t=new Thread(a);s.go();t.run();}public void go(){JFrame frame=new JFrame();frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);JPanel panel=new JPanel();JButton button=new JButton("发送");button.addActionListener(l);textarea =new JTextArea(10,20);textarea.setLineWrap(true);text=new JTextField();text.addKeyListener(new KeyAdapter(){ public void keyPressed(KeyEvent e)    {    if(e.getKeyChar()==KeyEvent.VK_ENTER )   //按回车键执行相应操作; { Send send =new Send();send.go();} } });panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));JScrollPane scroller = new JScrollPane(textarea);scroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);          scroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);panel.add(scroller);panel.add(text);frame.getContentPane().add(BorderLayout.CENTER,panel);frame.getContentPane().add(BorderLayout.SOUTH,button);frame.setSize(300,300);frame.setVisible(true);}class Send{public void go(){String str=text.getText().toString();if(str.equals("")||str==null){text.setText("请输入后再发送！");} else{textarea.append("电脑->手机：\n"+str+"\n");try{Socket s=new Socket("192.168.191.3",20000);DataOutputStream out=new DataOutputStream(s.getOutputStream());out.writeUTF(str);out.flush(); }catch(IOException ex){text.setText("没连上");}text.setText(null);}}}
}public class Accept implements Runnable {@Overridepublic void run() {try{ServerSocket server =new ServerSocket(23000);while(true){Socket socket=server.accept();DataInputStream input=new DataInputStream(socket.getInputStream());String strget=input.readUTF();Server.textarea.append("手机->电脑：\n"+strget+"\n");} }catch(IOException e){e.printStackTrace();}}}

 

 

 

 

 

 

手机端：

 

public class MainActivity extends Activity {
EditText et=null;//编辑框
Button bsend=null;//发送按钮
LinearLayout ll;//布局protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);et=(EditText)findViewById(R.id.editText1);
bsend=(Button)findViewById(R.id.button1);
ll=(LinearLayout)findViewById(R.id.ll);
bsend.setText("发送");
bsend.setOnClickListener(new Button.OnClickListener() {    public void onClick(View v) {String str=et.getText().toString();if(str.equals("")||str==null){Toast.makeText(MainActivity.this, "请输入信息后再发送", Toast.LENGTH_SHORT).show();}else{try {Socket socket = new Socket("192.168.191.1",23000);                             DataOutputStream out=new DataOutputStream(socket.getOutputStream());out.writeUTF(str);out.flush();AddText a=new AddText();a.add("手机->电脑：\n"+str+"\n",-65536);et.setText("");}catch (IOException ex) {Toast.makeText(MainActivity.this, "无法获取Ip！", Toast.LENGTH_SHORT).show();}}}});Service s=new Service();
Thread t=new Thread(s);
t.start();}public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}class AddText{
String str=null;
int color=0;
public void add(String str,int color){TextView show =new TextView(MainActivity.this);ll.addView(show);show.setTextSize(15);show.setTextColor(color);show.setText(str);
}
}public Handler mHandler = new Handler() { 
public void handleMessage(Message msg) {
super.handleMessage(msg);
Bundle b = msg.getData();AddText a1=new AddText();a1.add("电脑->手机：\n"+msg.obj.toString()+"\n",-16776961);        }};protected void onDestroy() {
super.onDestroy();
android.os.Process.killProcess(android.os.Process.myPid());}class Service implements Runnable{public void run() {try{ServerSocket server=new ServerSocket(20000);while(true){Socket socket = server.accept();       DataInputStream input=new DataInputStream(socket.getInputStream());Message message = new Message();Bundle b = new Bundle();message.obj=input.readUTF();message.setData(b); MainActivity.this.mHandler.sendMessage(message);}} catch (IOException e) { e.printStackTrace(); }}} 
}