lserver.java

实现简单聊天、群聊以及点对点文件传输,有兴趣的朋友可以拿去

/*
 * LSever.java
 *
 * Created on 2008年6月2日, 下午3:46
 */

package LServer;

import java.awt.event.KeyEvent;
import java.io.*;
import java.net.*;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.ComboBoxModel;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JOptionPane;

/**
 *
 * @author  Administrator
 */
public class LServer extends javax.swing.JFrame {
    
    /** Creates new form LSever */
    public LServer() {
        initComponents();
    }
    
    /** 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="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jPanel2 = new javax.swing.JPanel();
        jScrollPane2 = new javax.swing.JScrollPane();
        jTextArea2 = new javax.swing.JTextArea();
        jComboBox1 = new javax.swing.JComboBox();
        jPanel3 = new javax.swing.JPanel();
        jTextField1 = new javax.swing.JTextField();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("服务器");

        jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("用户状态"));

        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jTextArea1.setEnabled(false);
        jScrollPane1.setViewportView(jTextArea1);

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 364, Short.MAX_VALUE)
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 153, Short.MAX_VALUE)
        );

        jButton1.setText("关闭服务器");
        jButton1.setEnabled(false);
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jButton2.setText("开启服务器在端口：");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder("系统消息"));

        jTextArea2.setColumns(20);
        jTextArea2.setRows(5);
        jTextArea2.setEnabled(false);
        jTextArea2.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyPressed(java.awt.event.KeyEvent evt) {
                jTextArea2KeyPressed(evt);
            }
        });
        jScrollPane2.setViewportView(jTextArea2);

        javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 364, Short.MAX_VALUE)
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane2, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 86, Short.MAX_VALUE)
        );

        jComboBox1.setModel(getItem());

        jPanel3.setBorder(javax.swing.BorderFactory.createTitledBorder("在线人数"));

        jTextField1.setEnabled(false);

        javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
        jPanel3.setLayout(jPanel3Layout);
        jPanel3Layout.setHorizontalGroup(
            jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 364, Short.MAX_VALUE)
        );
        jPanel3Layout.setVerticalGroup(
            jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel3Layout.createSequentialGroup()
                .addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 31, Short.MAX_VALUE)
                .addContainerGap())
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
            .addGroup(layout.createSequentialGroup()
                .addGap(20, 20, 20)
                .addComponent(jButton2)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jComboBox1, 0, 115, Short.MAX_VALUE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jButton1)
                .addGap(19, 19, 19))
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton2)
                    .addComponent(jButton1)
                    .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap())
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
        // TODO add your handling code here:
          try {  Enumeration ren = peopleList.elements();
            while(ren.hasMoreElements())
                {
                    Server_thread th = (Server_thread) ren.nextElement();
                    th.out.writeUTF("系统消息：服务器已经关闭！");
                }
               } catch (IOException ex) { 
                Logger.getLogger(LServer.class.getName()).log(Level.SEVERE, null, ex);     
                }finally
                {
                    System.exit(0); 
                }     
               // System.exit(0);
            
    }//GEN-LAST:event_jButton1ActionPerformed
private ComboBoxModel getItem() {
        String[] item = new String[64511];
        for (Integer i = 1; i < 64511; i++) {
            item[i-1] = String.valueOf(i + 1024);
        }
        return new DefaultComboBoxModel(item);
    }
public void Message(String io)
{
       JOptionPane.showMessageDialog(this, io,"注意！",JOptionPane.INFORMATION_MESSAGE);
}
        static int i = 0;
    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
        // TODO add your handling code here:
        new Thread(new Runnable(){
            public void run(){       
            ServerSocket server = null;
            Socket you = null;
            Hashtable peopleList = new Hashtable();
            while (true)
            {
                    jComboBox1.setEnabled(false);
                    jTextArea1.setEnabled(true);
                    jTextArea2.setEnabled(true);           
                    jButton1.setEnabled(true);
                    jButton2.setEnabled(false);
                    jTextField1.setEnabled(true);
                    try {
                        int port = Integer.parseInt((String) jComboBox1.getSelectedItem());
                        server = new ServerSocket(port);
                        jTextArea1.append("服务器运行在" + port + "端口..." + "\n");
                    } catch (IOException ex) {
                        jTextArea1.append("正在监听..." + "\n");  
                    }    
                    jTextField1.setText("当前在线用户数为：" + i + "人！");