chartserver.java

Java 聊天程序 有客户端和服务端。

package chatserver;

import java.io.*;
import java.net.*;
import java.awt.*;
import javax.swing.*;

/**
 * <p>Title: 聊天</p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2005</p>
 *
 * <p>Company: 个人</p>
 *
 * @author Mothz
 * @version 1.0
 */

public class ChartServer {
    boolean packFrame = false;

    //Construct the application
    public ChartServer() {
        try {
            /*启动服务器时进行本地端口检测，以防止其它软件占有服务器默认的端口
             *同时防止一台电脑上启动多个服务器
             *若被占用则提示用户，用户确认之后退出系统，若没有则启动服务器*/
            Socket socket = new Socket("localhost", 5555);
            JOptionPane.showMessageDialog(null, "5555 端口占用，无法启动！", "端口",
                                          JOptionPane.WARNING_MESSAGE);
            socket.close();
            System.exit(0);
        }
        catch (HeadlessException ex) {
            ex.printStackTrace();
        }
        catch (UnknownHostException ex) {
        }
        catch (IOException ex) {
        }
        //显示服务器密码验证登录框
        ServerDialog frame = new ServerDialog();
        //Validate frames that have preset sizes
        //Pack frames that have useful preferred size info, e.g. from their layout
        if (packFrame) {
            frame.pack();
        }
        else {
            frame.validate();
        }
        //中央窗口
        Center.CenterWindow(frame);
        //显示密码验证窗口
        frame.setVisible(true);
    }

    //Main method
    public static void main(String[] args) {
        try {
            //使用系统默认皮肤
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        new ChartServer();
    }
}