8.03_网络编程(GUI聊天小程序)
一、小程序效果图
二、代码
public class MyFrame extends JFrame {
private static final long serialVersionUID = 1L;
private JPanel jp1,jp2;
private JButton jb1,jb2,jb3,jb4;
private JTextField jtf1;
private JTextArea jta1,jta2;
private JScrollPane jsp1,jsp2;
DatagramSocket scoket;
BufferedWriter bw;
private LogFileDialog ld;
public MyFrame() {
centerPanel();
southPanel();
init();
sendsf();
}
public void centerPanel() {
jp1 = new JPanel();
jta1 = new JTextArea();
jta2 = new JTextArea(5,1);
jsp1 = new JScrollPane(jta1);
jsp2 = new JScrollPane(jta2);
jta1.setEditable(false);
jta1.setBackground(Color.WHITE);
jta1.setFont(new Font("sdds", Font.PLAIN, 15));
jta2.setFont(new Font("sdds", Font.PLAIN, 15));
jp1.setLayout(new BorderLayout());
jp1.add(jsp2,BorderLayout.SOUTH);jp1.add(jsp1,BorderLayout.CENTER);
this.add(jp1,BorderLayout.CENTER);
}
public void southPanel() {
jp2 = new JPanel();
jb1 = new JButton("发送");
jb2 = new JButton("记录");
jb3 = new JButton("清屏");
jb4 = new JButton("震动");
jtf1 = new JTextField(15);
jtf1.setText("127.0.0.1");
jp2.add(jtf1);jp2.add(jb1);jp2.add(jb2);jp2.add(jb3);jp2.add(jb4);
this.add(jp2,BorderLayout.SOUTH);
}
public void init() {
this.setSize(530, 550);
this.setLocation(300,100);
this.setTitle("飞飞飞球");
try {
scoket = new DatagramSocket();
bw = new BufferedWriter(new FileWriter("cofing.txt",true));
} catch (Exception e) {
e.printStackTrace();
}
new Receive().start();
this.setVisible(true);
}
public void sendsf() {
this.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
scoket.close();
try {
bw.close();
} catch (IOException e1) {
e1.printStackTrace();
}
System.exit(0);
}
});
jb1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
send();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
});
jb2.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
logFile();
} catch (IOException e1) {
e1.printStackTrace();
}
}
});
jb3.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
jta1.setText("");
}
});
jb4.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
send(new byte[] {-1},jtf1.getText() );
} catch (UnknownHostException e1) {
e1.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
}
}
});
jta2.addKeyListener(new KeyAdapter() {
@Override
public void keyReleased(KeyEvent e) {
try {
//if(e.getKeyCode()==KeyEvent.VK_ENTER&&e.isControlDown()) {//isControlDown() ctrl是否被按下
if(e.getKeyCode()==KeyEvent.VK_ENTER){
send();
}
} catch (IOException e1) {
e1.printStackTrace();
}
}
});
}
private void sake() {
int x= this.getLocation().x;
int y = this.getLocation().y;
for(int i=0;i<15;i++) {
try {
this.setLocation(x+14, y+15);
Thread.sleep(10);
this.setLocation(x+14, y-16);
Thread.sleep(10);
this.setLocation(x-16, y+17);
Thread.sleep(10);
this.setLocation(x-16, y-17);
Thread.sleep(10);
this.setLocation(x, y);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
private void logFile() throws IOException {
bw.flush();
FileInputStream fis = new FileInputStream("cofing.txt");
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte[] arr = new byte[8819];
int len;
while((len=fis.read(arr))!=-1) {
bos.write(arr,0,len);
}
String jilu=bos.toString();
bos.close();
ld = new LogFileDialog(jilu);
ld.setVisible(true);
}
private void send() throws IOException {
String str1 = jta2.getText();
String ip = jtf1.getText();
ip = ip.trim().length()==0?"255.255.255.255":ip;
send(str1.getBytes(), ip);
String time = getTime();
String str = time +" 我对"+(ip.equals("255.255.255.255")?"所有人":ip)+"说:\r\n"+str1+"\r\n\r\n";
bw.write(str);
jta1.append(str);
jta2.setText("");
}
public void send(byte[] arr, String ip) throws UnknownHostException, IOException {
DatagramPacket packet = new DatagramPacket(
arr, arr.length,InetAddress.getByName(ip), 6666);
scoket.send(packet);
}
private String getTime() {
SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date da = new Date();
return sf.format(da);
}
private class Receive extends Thread{
@Override
public void run() {
try {
DatagramSocket scoket = new DatagramSocket(6666);
DatagramPacket packet = new DatagramPacket(new byte[8192], 8192);
while(true) {
scoket.receive(packet);
byte[] array = packet.getData();
int len = packet.getLength();
if(array[0]==-1&&len==1) {
sake();
continue;
}
String time = getTime();
String ip = packet.getAddress().getHostAddress();
String measg = new String(array,0,len);
String str = time+" "+ip+" 对我说：\r\n"+measg+"\r\n\r\n";
bw.write(str);
jta1.append(str);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
class LogFileDialog extends JDialog{
private JTextArea jta;
private JScrollPane jsp;
public String jilu;
public LogFileDialog(String jilu) {
this.jilu=jilu;
this.setTitle("聊天记录");
this.setSize(430,440);
this.setLocation(400, 120);
jta = new JTextArea();
jsp = new JScrollPane(jta);
jta.setText(jilu);
this.add(jsp);
}
}
