转载自网上的即时通讯稍微修改了一下bug

电玩女神 2022-06-12 12:28 143阅读 0赞

package test3;
    import java.awt.Button;  
    import java.awt.Color;  
    import java.awt.Font;  
    import java.awt.Frame;  
    import java.awt.Label;  
    import java.awt.TextArea;  
    import java.awt.TextField;  
    import java.awt.event.ActionEvent;  
    import java.awt.event.ActionListener;  
    import java.awt.event.WindowAdapter;  
    import java.awt.event.WindowEvent;  
    import java.io.IOException;  
    import java.net.DatagramPacket;  
    import java.net.DatagramSocket;  
    import java.net.InetAddress;  
    import java.net.SocketException;
    import java.text.SimpleDateFormat;
    import java.util.Date;
    
    import javax.swing.JOptionPane;
    
     
    public class Chat {
    	
    	
    	
    	public static void main(String[] args) {  
            new MyFrame();  
      
            new MyEvent();  
      
            Thread thread = new Thread(new MyRecevier());  
            thread.start();  
      
        }  
      
    }  
      
    class MySend {  
      
        public MySend() throws Exception {  
      
            DatagramSocket dSocket = new DatagramSocket(10000);  
            byte[] buf = ("from:" + InetAddress.getLocalHost().getHostAddress() + "\r\n" + MyEvent.myText)  
                    .getBytes();  
      
            System.out.println("收到内容：" + MyEvent.myText);  
      
            DatagramPacket dPacket = new DatagramPacket(buf, buf.length,  
                    InetAddress.getByName(MyEvent.myIp), 8888);// 自定义  
      
            dSocket.send(dPacket);  
            dSocket.close();  
      
            // 显示自己发的信息  
            // ----------------本机显示测试------------------//  
    		SimpleDateFormat simpleDateFormat = new SimpleDateFormat("YYYY/MM/dd HH:mm");
    		String date = simpleDateFormat.format(new Date());
            MyFrame.receField.append(date + "\r\nME:" + MyEvent.myText + "\r\n");  
      
        }  
    }  
      
    class MyRecevier implements Runnable {  
      
        @SuppressWarnings("resource")
    	@Override  
        public void run() {  
      
            DatagramSocket dSocket = null;  
      
            try {  
                dSocket = new DatagramSocket(8888);  
            } catch (SocketException e1) {  
                e1.printStackTrace();  
            }  
            ;  
      
            byte[] buf = new byte[1024];  
      
            DatagramPacket dPacket = new DatagramPacket(buf, buf.length);  
      
            while (true) {  
                try {  
                    dSocket.receive(dPacket);  
                } catch (IOException e) {  
                    e.printStackTrace();  
                }  
      
                String string = new String(dPacket.getData(), 0,  
                        dPacket.getLength());  
      
                // ----------------本机显示测试------------------//  
                SimpleDateFormat simpleDateFormat = new SimpleDateFormat("YYYY/MM/dd HH:mm");
                String date = simpleDateFormat.format(new Date());
                MyFrame.receField.append(date + "\r\n" + string + "\r\n");  
      
            }  
      
      
        }  
    }  
      
    class MyEvent {  
      
        static String myIp = "";  
        static String myText;  
        String myReceText;  
      
        public MyEvent() {  
      
            // 提交  
            MyFrame.btnPost.addActionListener(new ActionListener() {  
      
                @Override  
                public void actionPerformed(ActionEvent e) {  
      
                    myIp = MyFrame.ipField.getText().toString().trim();  
      
                    String[] strings = myIp.split("\\.");  
                    boolean t = true;  
      
                    if (strings.length != 4) {  
                        t = false;  
                        JOptionPane.showMessageDialog(null, "请输入正确的IP地址！");  
                    } else {  
                        for (int i = 0; i < strings.length; i++) {  
      
                            // 告知此字符串是否匹配给定的正则表达式。  
                            if (!strings[i]  
                                    .matches("^[-+]?(([0-9]+)([.]([0-9]+))?|([.]([0-9]+))?)$")) {  
                                t = false;  
                                JOptionPane.showMessageDialog(null, "带有非数字字符！");  
                                break;  
      
                            } else if (Integer.parseInt(strings[i]) > 255  
                                    || Integer.parseInt(strings[i]) < 0) {  
                                t = false;  
                                JOptionPane.showMessageDialog(null, "请输入正确的IP地址！");  
                                break;  
                            }  
      
                        }  
                    }  
                    if (t) {  
                        myIp = MyFrame.ipField.getText().toString().trim();  
                        System.out.println("目标IP:" + myIp);  
                        JOptionPane.showMessageDialog(null, "提交成功！");  
                    }  
                }  
            });  
      
            // 清除  
            MyFrame.btnCancel.addActionListener(new ActionListener() {  
      
                @Override  
                public void actionPerformed(ActionEvent e) {  
      
                    MyFrame.inputField.setText(" ");  
      
                }  
            });  
      
            // 发送并清除编辑内容  
            MyFrame.btnSend.addActionListener(new ActionListener() {  
      
                @Override  
                public void actionPerformed(ActionEvent e) {  
      
                    myText = MyFrame.inputField.getText().toString().trim();  
      
                    if (myIp.equals("")) {  
                        JOptionPane.showMessageDialog(null, "请输入目标IP并提交！");  
                    } else if (myText.equals("")) {  
                        JOptionPane.showMessageDialog(null, "请输入内容再发送！");  
      
                    } else {  
      
                        System.out.println("发送内容：" + myText);  
                        MyFrame.inputField.setText(" ");  
      
                        try {  
      
                            new MySend();  
      
                        } catch (Exception e1) {  
                            e1.printStackTrace();  
                        }  
                    }  
      
                }  
            });  
      
            // 刷新聊天记录  
            MyFrame.btnRecord.addActionListener(new ActionListener() {  
      
                @Override  
                public void actionPerformed(ActionEvent e) {  
      
                }  
            });  
      
        }  
      
    }  
      
    class MyFrame {  
      
        Frame frame;  
        static Button btnSend, btnRecord, btnCancel, btnPost;  
        static TextArea inputField, recordField, receField;  
        static TextField ipField;  
      
        MyFrame() {  
            frame = new Frame("IP聊天");  
            frame.setSize(432, 500);  
            frame.setLayout(null);  
            frame.setLocation(400, 150);  
            frame.setResizable(false);  
            frame.addWindowListener(new WindowAdapter() {  
                public void windowClosing(WindowEvent e) {  
                    System.exit(0);  
                }  
            });  
            frame.setVisible(true);  
            frame.setBackground(Color.gray);  
      
            InputFrame();  
        }  
      
        public void InputFrame() {  
            Label label1 = new Label();  
            Label label2 = new Label("input IP :");  
            label1.setBounds(5, 10, 460, 200);  
            label2.setBounds(8, 465, 80, 30);  
      
            ipField = new TextField();  
            ipField.setBounds(85, 467, 148, 25);  
      
            inputField = new TextArea("", 5, 10, TextArea.SCROLLBARS_VERTICAL_ONLY);  
            recordField = new TextArea("", 5, 10, TextArea.SCROLLBARS_NONE);  
            receField = new TextArea("", 5, 10, TextArea.SCROLLBARS_VERTICAL_ONLY);  
            inputField.setBounds(5, 320, 420, 140);  
            inputField.setBackground(new Color(234,234,234));  
            recordField.setBounds(430, 30, 165, 430);  
            recordField.setBackground(new Color(234,234,234));  
            receField.setBounds(5, 30, 420, 285);  
            receField.setBackground(new Color(234,234,234));  
      
            inputField.setFocusable(true);  
            receField.setFocusable(false);  
            recordField.setFocusable(false);  
      
            ipField.setFont(new Font("Monospaced", Font.ITALIC, 15));  
            inputField.setFont(new Font("Monospaced", Font.ITALIC, 25));  
            receField.setFont(new Font("Monospaced", Font.ITALIC, 18));  
            recordField.setFont(new Font("Monospaced", Font.ITALIC, 15));  
      
            btnCancel = new Button("cancel");  
            btnSend = new Button("send");  
            btnRecord = new Button("Chalked Up");  
            btnPost = new Button("sumbit");  
      
            btnCancel.setBounds(295, 465, 60, 30);  
            btnSend.setBounds(360, 465, 60, 30);  
            btnRecord.setBounds(435, 465, 80, 30);  
            btnPost.setBounds(240, 465, 50, 30);  
      
            frame.add(inputField);  
            frame.add(receField);  
            frame.add(btnCancel);  
            frame.add(btnSend);  
            frame.add(btnPost);  
            frame.add(label1);  
            frame.add(label2);  
            frame.add(ipField);  
      
        }  
    }