server.java

达内学习时老师写的一个即时通信系统源码,有一定的学习价值!

/*
 * Server.java
 *
 *
 */

package com.project.chat.server;

import com.project.util.CharacterUtil;
import javax.swing.*;
import java.util.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
/**
 *
 * @author  zl
 */
public class Server extends javax.swing.JFrame
{
    private static final String CONNECT_THREAD = "CONNECT";
    private static Thread thread;
    private static Thread thread2;
    private static Thread thread3;
    private Map map = new HashMap();   //用户名与端口号的映射
    
    
    
    /** Creates new form Server */
    public Server()
    {
        initComponents();
        this.jTextArea1.setEditable(false);
        this.jTextArea1.setForeground(new java.awt.Color(245,0,0));
        this.addWindowListener(new ServerClosed(this));
    }
    
    public Map getMap()
    {
        return map;
    }
    
    public void setMap(Map map)
    {
        this.map = map;
    }
    
    public void setUsersList()
    {
        this.jTextArea1.setText("");    //先清空之前的用户列表
        for(Iterator i = map.keySet().iterator();i.hasNext();)
        {
            String username = (String)i.next();
            this.jTextArea1.append(username + "\n");
        }
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" 生成的代码 ">//GEN-BEGIN:initComponents
    private void initComponents()
    {
        buttonGroup1 = new javax.swing.ButtonGroup();
        jPanel2 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jSeparator2 = new javax.swing.JSeparator();
        jPanel1 = new javax.swing.JPanel();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();

        setDefaultCloseOperation(javax.swing.WindowConstants.DO_NOTHING_ON_CLOSE);
        setTitle("\u670d\u52a1\u5668");
        setResizable(false);
        jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "\u670d\u52a1\u5668\u4fe1\u606f", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Dialog", 0, 13), new java.awt.Color(0, 51, 204)));
        jLabel1.setText("\u670d\u52a1\u5668\u72b6\u6001");

        jLabel3.setForeground(new java.awt.Color(204, 0, 51));
        jLabel3.setText("\u505c\u6b62");

        jLabel4.setText("\u7aef\u53e3\u53f7");

        jButton1.setText("\u542f\u52a8\u670d\u52a1\u5668");
        jButton1.addActionListener(new java.awt.event.ActionListener()
        {
            public void actionPerformed(java.awt.event.ActionEvent evt)
            {
                jButton1ActionPerformed(evt);
            }
        });

        org.jdesktop.layout.GroupLayout jPanel2Layout = new org.jdesktop.layout.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel2Layout.createSequentialGroup()
                .add(73, 73, 73)
                .add(jLabel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 85, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .add(48, 48, 48)
                .add(jLabel3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 65, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(83, Short.MAX_VALUE))
            .add(jSeparator2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 354, Short.MAX_VALUE)
            .add(jPanel2Layout.createSequentialGroup()
                .add(19, 19, 19)
                .add(jLabel4)
                .add(33, 33, 33)
                .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 99, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .add(40, 40, 40)
                .add(jButton1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 104, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(23, Short.MAX_VALUE))
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel2Layout.createSequentialGroup()
                .add(jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 24, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jLabel3))
                .add(21, 21, 21)
                .add(jSeparator2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 10, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel4)
                    .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jButton1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 23, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(19, Short.MAX_VALUE))
        );

        jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "\u5728\u7ebf\u7528\u6237\u5217\u8868", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Dialog", 0, 13), new java.awt.Color(0, 51, 204)));
        jTextArea1.setColumns(20);
        jTextArea1.setForeground(new java.awt.Color(0, 51, 204));
        jTextArea1.setRows(5);
        jScrollPane1.setViewportView(jTextArea1);

        org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel1Layout.createSequentialGroup()
                .addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 334, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel1Layout.createSequentialGroup()
                .addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 306, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );

        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(jPanel1, 0, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .add(jPanel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jPanel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .add(5, 5, 5)
                .add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents
    
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)//GEN-FIRST:event_jButton1ActionPerformed
    {//GEN-HEADEREND:event_jButton1ActionPerformed
        String command = evt.getActionCommand();
        if("启动服务器".equals(command))
        {
            String hostPort = this.jTextField1.getText();
            if(CharacterUtil.isEmpty(hostPort))
            {
                JOptionPane.showMessageDialog(this,"端口号不能为空！","警告",JOptionPane.WARNING_MESSAGE);
                this.jTextField1.requestFocus();
                return;
            }
            if(!CharacterUtil.isNumber(hostPort))
            {
                JOptionPane.showMessageDialog(this,"端口号必须为数字！","警告",JOptionPane.WARNING_MESSAGE);
                this.jTextField1.requestFocus();
                return;
            }
            
            if(!CharacterUtil.isPortCorrect(hostPort))
            {
                JOptionPane.showMessageDialog(this,"端口号必须在 1024 与 65535 之间！","警告",JOptionPane.WARNING_MESSAGE);
                this.jTextField1.requestFocus();
                return;
            }
            
            int port = Integer.parseInt(hostPort);
            
            thread = new ConnectThread(this,CONNECT_THREAD,port);
            thread.start();
            
            thread2 = new ExitThread(this);
            thread2.start();
            
            thread3 = new ServerUDP(this);
            thread3.start();
            
            this.jButton1.setText("停止服务器");
            this.jLabel3.setText("运行中");
            this.jTextField1.setEnabled(false);
            this.jButton1.setEnabled(false);
            
        }
        
    }//GEN-LAST:event_jButton1ActionPerformed
    
    
    
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[])
    {
        java.awt.EventQueue.invokeLater(new Runnable()
        {
            public void run()
            {
                new Server().setVisible(true);
            }
        });
    }
    
    
    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.ButtonGroup buttonGroup1;
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JSeparator jSeparator2;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextField jTextField1;
    // 变量声明结束//GEN-END:variables
    
}

class ServerClosed  extends WindowAdapter
{
    private Server server;
    public ServerClosed(Server server)
    {
        this.server = server;
    }
    public void windowClosing(WindowEvent event)
    {
        try
        {
            Map map = server.getMap();
            Set set = map.entrySet();
            Iterator iterator = set.iterator();
            while(iterator.hasNext()) //向每个客户端发送信息
            {
                Map.Entry me = (Map.Entry)iterator.next();
                String username = (String)me.getKey();
                String ports = (String)me.getValue();
                int index = ports.indexOf("_");
                int port = Integer.parseInt(ports.substring(0,index));
                int lastIndex = ports.lastIndexOf("_");
                
                String address = ports.substring(lastIndex + 1);
                
                InetAddress clientAddress = InetAddress.getByName(address);
                
                Socket socket = new Socket(clientAddress,port);
                OutputStream outputStream = socket.getOutputStream();
                String message = "SERVER_CLOSED";
                outputStream.write((message).getBytes());
                outputStream.close();
                socket.close();
                
            }
        }
        catch(Exception ex)
        {
            ex.printStackTrace();
        }
        System.exit(0);
    }
}