package day26;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Color;
import java.awt.Font;
import java.awt.Frame;
import java.awt.Panel;
import java.awt.TextArea;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.BufferedWriter;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class Demo_4 extends Frame{
private TextField tf;
private Button send;
private Button log;
private Button clear;
private Button shake;
private TextArea viewText;
private TextArea senText;
private DatagramSocket socket;
private BufferedWriter bw;
//private String ip ;
public Demo_4() {
init();
southPannel();
centerPanel();
event();
}
private void event() {
// TODO Auto-generated method stub
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
socket.close();
try {
bw.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.exit(0);
}
});
send.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
try {
send();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
log.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
try {
logFile();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
});
clear.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
viewText.setText("");
}
});
shake.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
//shake();
try {
send(new byte[] {-1},tf.getText());
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
});
senText.addKeyListener(new KeyAdapter() {
public void keyReleased(KeyEvent e) {
if(e.getKeyCode()== KeyEvent.VK_ENTER ) {
try {
send();
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}
});
}
private void shake() {
// TODO Auto-generated method stub
int x =this.getLocation().x;
int y= this.getLocation().y;
for(int i=0;i<10;i++) {
try {
Thread.sleep(20);
this.setLocation(x+20,y+20);
Thread.sleep(20);
this.setLocation(x+20,y-20);
Thread.sleep(20);
this.setLocation(x-20,y+20);
Thread.sleep(20);
this.setLocation(x-20,y-20);
Thread.sleep(20);
this.setLocation(x,y);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private void logFile() throws IOException {
// TODO Auto-generated method stub
bw.flush();
FileInputStream fis =new FileInputStream("config.txt");
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int len;
byte[] arr = new byte[8192];
while((len=fis.read(arr)) != -1) {
baos.write(arr,0,len);
}
String str =baos.toString();
viewText.setText(str);
fis.close();
}
private void send(byte[] arr,String ip) throws Exception {
DatagramPacket packet=
new DatagramPacket(arr,arr.length,InetAddress.getByName(ip), 9999);
socket.send(packet);
}
private void send() throws Exception {
// TODO Auto-generated method stub
String message = senText.getText();
String ip = tf.getText();
ip=ip.trim().length() ==0 ? "255.255.255.255" :ip;
send(message.getBytes(),ip);
String time =getCurrentTime();
String str= time+" 我对:"+(ip.equals("255.255.255.255")? "所有人" :ip) +"
" + message+"
";
viewText.append(str);
bw.write(str);
senText.setText("");
}
private String getCurrentTime() {
// TODO Auto-generated method stub
Date d =new Date();
SimpleDateFormat sdf =new SimpleDateFormat("YY年MM月dd月 HH:ss:ss");
return sdf.format(d);
}
private void centerPanel() {
// TODO Auto-generated method stub
Panel center = new Panel();
viewText =new TextArea();
senText =new TextArea(5,1);
center.setLayout(new BorderLayout());
center.add(senText,BorderLayout.SOUTH);
center.add(viewText,BorderLayout.CENTER);
viewText.setEnabled(false);
viewText.setBackground(Color.white);
senText.setFont(new Font("xxx",Font.PLAIN,15));
viewText.setFont(new Font("xxx",Font.PLAIN,15));
this.add(center,BorderLayout.CENTER);
}
public void southPannel() {
// TODO Auto-generated method stub
Panel south =new Panel();
tf =new TextField(15);
tf.setText("127.0.0.1");
send =new Button("发送");
log =new Button("记录");
clear =new Button("清屏");
shake =new Button("震动");
south.add(tf);
south.add(send);
south.add(log);
south.add(clear);
south.add(shake);
this.add(south,BorderLayout.SOUTH);
}
public void init() {
this.setLocation(500,50);
this.setSize(400, 600);
new Recevice().start();
try {
socket = new DatagramSocket();
bw =new BufferedWriter(new FileWriter("config.txt",true));
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
this.setVisible(true);
}
private class Recevice extends Thread{
public void run() {
try {
DatagramSocket socket= new DatagramSocket(8888);
DatagramPacket packet= new DatagramPacket(new byte[8192],8192);
while(true) {
socket.receive(packet);
byte[] arr = packet.getData();
int len=packet.getLength();
if(arr[0] == -1 && len ==1) {
shake();
continue;
}
String message =new String(arr,0,len);
String time =getCurrentTime();
String ip = packet.getAddress().getHostAddress();
String string = time+" :"+ip+"
";
viewText.append(string );
bw.write(string);
viewText.append(message +"
");
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public static void main(String[] args) {
// TODO Auto-generated method stub
new Demo_4();
}
}