import java.awt.BorderLayout;
import java.awt.List;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
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 javax.swing.JFrame;
import javax.swing.JPanel;
public class netchat {
JFrame jf=new JFrame("我的网络聊天程序");
List l=new List(6);
JPanel jp=new JPanel();
TextField tip=new TextField(15);
TextField tdata=new TextField(15);
DatagramSocket ds;
//DatagramPacket dp;
public netchat()
{
tip.setText("127.0.0.1");
try {
ds=new DatagramSocket(3000);
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
new Thread(new Runnable()
{
DatagramPacket dp;
public void run()
{
byte [] buf=new byte[1024];
dp=new DatagramPacket(buf,1024);
//
// byte[] buf=new byte[1024];
// dp=new DatagramPacket(buf,1024);
while(true)
{
try {
ds.receive(dp);
// l.add(dp.getAddress().getHostName()+"say:"+new String(buf,0,dp.getLength()), -1);
l.add(dp.getAddress().getHostAddress()+" say:"+new String(buf,0,+dp.getLength()), -1);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}).start();
}
public static void main(String[] args) {
// TODO Auto-generated method stub
new netchat().init();
}
private void init()
{
jf.add(l);
jp.add(tip,BorderLayout.WEST);
jp.add(tdata,BorderLayout.EAST);
jf.add(jp,BorderLayout.SOUTH);
jf.setSize(300, 300);
jf.setVisible(true);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
tdata.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
// byte[] buf;
// buf=e.getActionCommand().getBytes();
// DatagramPacket dp;
// try
// {
// dp=new DatagramPacket(buf,buf.length,InetAddress.getByName(tip.getText()),3000);
// ds.send(dp);
//
byte [] buf;
buf=e.getActionCommand().getBytes();
DatagramPacket dp;
try {
dp= new DatagramPacket(buf,buf.length,InetAddress.getByName(tip.getText()), 3000);
ds.send(dp);
} catch (UnknownHostException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
((TextField)e.getSource()).setText("");
}
});
}
}