connect.java

java聊天室客户端

package C;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.net.InetAddress;
import java.net.UnknownHostException;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

import S.Port;
import S.TestChatServer;

public class Connect implements ActionListener
{
	JDialog dialog;
    JPanel panel1, panel2, panel3;
    JLabel label1, label2, label3;
    JTextField textField_IP, textField_port;
    JButton button_save, button_cancel;
    int portnumber;
    InetAddress ipnumber;
    
    public void init(){
    	dialog = new JDialog();
    	dialog.setTitle("连接设置");
    	panel1 = new JPanel();
    	panel2 = new JPanel();
    	panel3 = new JPanel();
    	label1 = new JLabel("请输入服务器的IP地址：");
    	textField_IP = new JTextField("127.0.0.1",10);
    	label2 = new JLabel("请输入服务器的端口号：");
    	textField_port = new JTextField("8888",10);
    	label3 = new JLabel("默认连接设置为：127.0.0.1：8888");
    	button_save = new JButton("保存");
    	button_save.addActionListener(this);
    	button_cancel = new JButton("取消");
    	button_cancel.addActionListener(this);
    	    	
    	panel1.add(label1); 
    	panel1.add(textField_IP);
    	panel3.add(label2); 
    	panel3.add(textField_port);
    	panel3.add(label3);
    	panel2.add(button_save);
    	panel2.add(button_cancel);
    	
    	dialog.add(panel1,BorderLayout.NORTH);
    	dialog.add(panel3,BorderLayout.CENTER);
    	dialog.add(panel2,BorderLayout.SOUTH);

    	dialog.setSize(300, 150);
    	Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
    	dialog.setLocation((d.width - dialog.getWidth())/2
				,(d.height - dialog.getHeight())/2);
    	dialog.setVisible(true);
    	
    }

	public void actionPerformed(ActionEvent e)
	{
		Object obj = e.getSource();
		if(obj == button_save){
			if(obj == button_save){
				try
				{
					ipnumber =InetAddress.getByName(textField_IP.getText());
					portnumber = Integer.parseInt(textField_port.getText());
					if(portnumber<1 || portnumber>65535){
						Port.label2.setText("侦听端口必须是0-65535之间的整数!");
						return;
					}
					TestChatServer.port = portnumber;
				}
				catch (UnknownHostException e1)
				{
					e1.printStackTrace();
				}
				
				dialog.dispose();
			}
		}else if(obj == button_cancel){
			dialog.dispose();
		}
	}
}