java版两人聊天程序

 1 import java.io.*;
 2 import java.net.*;
 3 import java.text.SimpleDateFormat;
 4 import java.util.*;
 5 import java.awt.*;
 6 import java.awt.event.ActionEvent;
 7 import java.awt.event.ActionListener;
 8 
 9 import javax.swing.*;
10 
11 @SuppressWarnings("serial")
12 public class Server extends JFrame {
13     DataInputStream inputFromClient;
14     DataOutputStream outputToClient;
15     // Button for send massage
16     private JButton jbSend = new JButton("Send");
17     // Text area for displaying contents
18     private JTextArea jta = new JTextArea();
19     // Text field for receiving radius
20     private JTextField jtf = new JTextField();
21     SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
22     Date d = new Date();
23     String time = format.format(d);
24 
25     public static void main(String[] args) {
26         new Server();
27     }
28 
29     public Server() {
30         // Place text area on the frame
31         setLayout(new BorderLayout());
32         add(new JScrollPane(jta), BorderLayout.CENTER);
33         JPanel p = new JPanel();
34         p.setLayout(new BorderLayout());
35         p.add(new JLabel("Message"), BorderLayout.WEST);
36         p.add(jtf, BorderLayout.CENTER);
37         jtf.setHorizontalAlignment(JTextField.LEFT);
38         p.add(jbSend, BorderLayout.EAST);
39         add(p, BorderLayout.SOUTH);
40         jtf.addActionListener(new ButtonListener()); // Register listener
41         jbSend.addActionListener(new ButtonListener()); // Register listener
42         setTitle("Server");
43         setSize(500, 300);
44         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
45         setVisible(true); // It is necessary to show the frame here!
46 
47         try {
48             // Create a server socket
49             ServerSocket serverSocket = new ServerSocket(8001);
50             jta.append(" ***Server started at  " + time +"***"+ ‘\n‘);
51 
52             // Listen for a connection request
53             Socket socket = serverSocket.accept();
54 
55             // Create data input and output streams
56             inputFromClient = new DataInputStream(socket.getInputStream());
57             outputToClient = new DataOutputStream(socket.getOutputStream());
58 
59             while (true) {
60                 // Receive message from the client
61                 String message = inputFromClient.readUTF();
62                 jta.append(" " + time + ‘\n‘);
63                 jta.append(" Message: " + message + ‘\n‘);
64             }
65         } catch (IOException ex) {
66             jta.append(" ***端口已被占用!*** " + ‘\n‘);
67         }
68     }
69 
70     public class ButtonListener implements ActionListener {
71         public void actionPerformed(ActionEvent e) {
72             try {
73                 // Get the message from the text field
74                 String message = jtf.getText().trim();
75 
76                 // Send the radius to the server
77                 outputToClient.writeUTF(message);
78                 outputToClient.flush();
79 
80                 // Display to the text area
81                 jta.append(" " + time + ‘\n‘);
82                 jta.append(" MyMessage: " + message + "\n");
83                 jtf.setText(null);
84             } catch (IOException ex) {
85                 System.err.println(ex);
86             }
87         }
88     }
89 
90 }

 1 import java.io.*;
 2 import java.net.*;
 3 import java.text.SimpleDateFormat;
 4 import java.util.Date;
 5 import java.awt.*;
 6 import java.awt.event.*;
 7 import javax.swing.*;
 8 
 9 @SuppressWarnings("serial")
10 public class Client extends JFrame {
11     // Text field for receiving message
12     private JTextField jtf = new JTextField();
13 
14     // Text area to display contents
15     private JTextArea jta = new JTextArea();
16     // Button for send massage
17     private JButton jbSend = new JButton("Send");
18     // IO streams
19     private DataOutputStream toServer;
20     private DataInputStream fromServer;
21     SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
22     Date d = new Date();
23     String time = format.format(d);
24     
25     public static void main(String[] args) {
26         new Client();
27     }
28 
29     public Client() {
30         // Panel p to hold the label and text field
31         JPanel p = new JPanel();
32         p.setLayout(new BorderLayout());
33         p.add(new JLabel("Message"), BorderLayout.WEST);
34         p.add(jtf, BorderLayout.CENTER);
35         jtf.setHorizontalAlignment(JTextField.LEFT);
36         p.add(jbSend, BorderLayout.EAST);
37         setLayout(new BorderLayout());
38         add(p, BorderLayout.SOUTH);
39         add(new JScrollPane(jta), BorderLayout.CENTER);
40 
41         jtf.addActionListener(new ButtonListener()); // Register listener
42         jbSend.addActionListener(new ButtonListener()); // Register listener
43 
44         setTitle("Client");
45         setSize(500, 300);
46         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
47         setVisible(true); // It is necessary to show the frame here!
48 
49         try {
50             // Create a socket to connect to the server
51             Socket socket = new Socket("localhost", 8001);
52 
53             // Create an input stream to receive data from the server
54             fromServer = new DataInputStream(socket.getInputStream());
55 
56             // Create an output stream to send data to the server
57             toServer = new DataOutputStream(socket.getOutputStream());
58 
59             while (true) {
60                 // Get message from the server
61                 String message2 = fromServer.readUTF();
62                 jta.append(" " + time + ‘\n‘);
63                 jta.append(" Message: " + message2 + ‘\n‘);
64             }
65         } catch (IOException ex) {
66             jta.append(" ***连接服务器失败!*** "+ ‘\n‘);
67         }
68     }
69 
70     public class ButtonListener implements ActionListener {
71         public void actionPerformed(ActionEvent e) {
72             try {
73                 // Get the message from the text field
74                 String message = jtf.getText().trim();
75 
76                 // Send the message to the server
77                 toServer.writeUTF(message);
78                 toServer.flush();
79                 
80                 // Display to the text area
81                 jta.append(" " + time + ‘\n‘);
82                 jta.append(" MyMessage: " + message + "\n");
83                 jtf.setText(null);
84             } catch (IOException ex) {
85                 System.err.println(ex);
86             }
87         }
88     }
89 }