public class Client3 extends JFrame {static JTextArea area;JTextField field;JButton button;static PrintWriter writer;public Client3() {this.setTitle("客户端");this.setSize(400, 500);area= new JTextArea(25,30);field = new JTextField(20);button=new JButton("提交");JScrollPane sp =new JScrollPane(area);JPanel panel=new JPanel();this.add(sp,BorderLayout.CENTER);panel.add(field);panel.add(button);this.add(panel, BorderLayout.SOUTH);this.setVisible(true);this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent arg0) {String text = field.getText();writer.println(text);area.append("我："+text+"\n");field.setText("");}});}public static void main(String[] args) throws Exception{Client3 c =new Client3();Socket socket =new Socket("127.0.0.1",9995);OutputStream out = socket.getOutputStream();BufferedReader reader=new BufferedReader(new InputStreamReader(socket.getInputStream()));writer=new PrintWriter(out,true);System.out.println("成功连接服务器！");while(true){String line = reader.readLine();area.append("服务器："+line+"\n");}}}
public class Server3 extends JFrame {static JTextArea area; JTextField field; JButton button; static PrintStream writer; public Server3(){ this.setTitle("服务器"); this.setSize(400,500); area = new JTextArea(25,30); area.setEditable(false); field = new JTextField(20); button = new JButton("提交"); JPanel panel = new JPanel(); JScrollPane sp = new JScrollPane(area); this.add(sp,BorderLayout.CENTER); panel.add(field); panel.add(button); this.add(panel,BorderLayout.SOUTH); this.setVisible(true); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {String text =field.getText();writer.println(text);area.append("我："+text+"\n");field.setText("");}});}/*=================================================================================*/public static void main(String[] args) throws Exception{Server3 s = new Server3();ServerSocket server =new ServerSocket(9995);System.out.println("服务端准备完毕！开始监听请求！");Socket socket = server.accept();InetAddress address =socket.getInetAddress();String name = address.getLocalHost().getHostName();System.out.println(name+"已成功连接");BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));writer=new PrintStream(socket.getOutputStream(),true);while(true){String line=null;line=reader.readLine();if (line!=null) {area.append("客户端："+line+"\n");}}}}
