chatclientapplet.java~2~

基于Java RMI开发的一个网络聊天室源码

package chatrmio;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
//import com.borland.jbcl.layout.*;
import javax.swing.*;
import java.util.*;
import java.rmi.*;
import java.rmi.server.*;
import java.rmi.registry.*;


/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2009</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class ChatClientApplet extends Applet implements IChatClient
{
  IChatService service=null;
  String user;
  boolean connected=false;
  private boolean isStandalone = false;
  XYLayout xYLayout1 = new XYLayout();
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JLabel jLabel4 = new JLabel();
  JTextField jTextField1 = new JTextField();
  JTextField jTextField2 = new JTextField();
  JTextField jTextField3 = new JTextField();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  JTextField jTextField4 = new JTextField();
  JLabel jLabel5 = new JLabel();
  JButton jButton3 = new JButton();
  JScrollPane jScrollPane1 = new JScrollPane();
  JTextArea jTextArea1 = new JTextArea();
  JLabel jLabel6 = new JLabel();

  //Get a parameter value
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }
  //Construct the applet
  public ChatClientApplet() {
    //设置安全管理
    System.setSecurityManager(new RMISecurityManager());
    setStatus();
    jTextField1.setEditable(false);
    jTextField1.setText("localhost");
    jTextField2.setEnabled(false);
    jTextField2.setText("1055");
    jTextArea1.setEditable(false);
    try
    { /* 导出对象 */
      UnicastRemoteObject.exportObject(this);
    }
    catch(RemoteException e)
    {
    }
  }
  private void connect()
  {
    try
    {//
      service = (IChatService)Naming.lookup("rmi://localhost/IChatService");
      connected=true;
      setStatus();
      user=jTextField3.getText().trim();
      service.addClient(this,user+"连入");
    }
    catch(Exception e)
    {
      jTextArea1.append("连接失败 ...\n");
      connected=false;
      setStatus();
      service=null;
      System.out.println(e);
    }
  }
  private void disconnect()
  {
    try
    {
      if(service==null)
        return;
      service.removeClient(this,user+"退出");
      service=null;
    }
    catch(Exception e)
    {
      jTextArea1.append("连接失败 ...\n");
    }
    finally
    {
      connected=false;
      setStatus();
    }
  }
  private void setStatus()
  {
    if(connected)
    {
      jLabel6.setText("连接状态"+" : 已连接");
    }
    else
    {
      jLabel6.setText("连接状态"+" : 未连接");
    }
  }
  // 实现IChatClient 接口getName()

  public String getName()
  {
    return user;
  }
  // 实现IChatClient 接口sendMessge()
  public void sendMessage(String msg)
  {
    jTextArea1.append(msg+"\n");
  }

  //Initialize the applet
  public void init() {
    try {
      jbInit();
      ChatClientApplet client=new ChatClientApplet();//调用构造方法
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception {
    jLabel1.setFont(new java.awt.Font("Dialog", 1, 20));
    jLabel1.setForeground(Color.red);
    jLabel1.setText("JavaRMI聊天室客户端");
    this.setBackground(new Color(166, 188, 151));
    xYLayout1.setWidth(504);
    xYLayout1.setHeight(483);
    this.setLayout(xYLayout1);
    jLabel2.setFont(new java.awt.Font("Dialog", 1, 16));
    jLabel2.setForeground(Color.blue);
    jLabel2.setText("服务器名：");
    jLabel3.setFont(new java.awt.Font("Dialog", 1, 16));
    jLabel3.setForeground(Color.blue);
    jLabel3.setText("服务端口：");
    jLabel4.setFont(new java.awt.Font("Dialog", 1, 16));
    jLabel4.setForeground(Color.blue);
    jLabel4.setText("你的名字：");
    jButton1.setBackground(UIManager.getColor("OptionPane.questionDialog.titlePane.shadow"));
    jButton1.setFont(new java.awt.Font("Dialog", 1, 18));
    jButton1.setForeground(Color.blue);
    jButton1.setToolTipText("连接服务器");
    jButton1.setText("连 接");
    jButton1.addActionListener(new ChatClientApplet_jButton1_actionAdapter(this));
    jButton2.setBackground(UIManager.getColor("OptionPane.questionDialog.titlePane.shadow"));
    jButton2.setFont(new java.awt.Font("Dialog", 1, 18));
    jButton2.setForeground(Color.red);
    jButton2.setToolTipText("与服务器断开");
    jButton2.setText("断 开");
    jButton2.addActionListener(new ChatClientApplet_jButton2_actionAdapter(this));
    jTextField1.setBackground(UIManager.getColor("FormattedTextField.selectionBackground"));
    jTextField1.setForeground(Color.red);
    jTextField2.setBackground(new Color(215, 224, 242));
    jTextField2.setForeground(Color.red);
    jTextField3.setBackground(new Color(215, 224, 242));
    jTextField3.setFont(new java.awt.Font("Dialog", 0, 18));
    jTextField3.setForeground(SystemColor.activeCaption);
    jLabel5.setFont(new java.awt.Font("Dialog", 1, 15));
    jLabel5.setForeground(Color.blue);
    jLabel5.setText("信息输入框：");
    jTextField4.setBackground(new Color(215, 224, 242));
    jTextField4.setForeground(SystemColor.activeCaption);
    jButton3.setBackground(new Color(203, 158, 98));
    jButton3.setFont(new java.awt.Font("Serif", 1, 18));
    jButton3.setForeground(SystemColor.activeCaption);
    jButton3.setToolTipText("发送信息");
    jButton3.setText("发 送");
    jButton3.addActionListener(new ChatClientApplet_jButton3_actionAdapter(this));
    jScrollPane1.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    jScrollPane1.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
    jScrollPane1.getViewport().setBackground(new Color(120, 143, 255));
    jScrollPane1.setForeground(new Color(120, 143, 255));
    jTextArea1.setBackground(new Color(215, 224, 242));
    jLabel6.setFont(new java.awt.Font("DialogInput", 1, 16));
    jLabel6.setForeground(UIManager.getColor("Button.focus"));
    jLabel6.setToolTipText("");
    this.add(jLabel1,  new XYConstraints(141, 24, 222, -1));
    this.add(jLabel4,      new XYConstraints(60, 150, -1, 30));
    this.add(jLabel2,      new XYConstraints(60, 70, -1, 30));
    this.add(jLabel3,       new XYConstraints(60, 110, -1, 30));
    this.add(jTextField1,    new XYConstraints(140, 70, 120, 30));
    this.add(jTextField2,         new XYConstraints(140, 110, 120, 30));
    this.add(jTextField3,      new XYConstraints(140, 150, 120, 30));
    this.add(jButton2,        new XYConstraints(330, 110, 100, 30));
    this.add(jTextField4,       new XYConstraints(140, 208, 188, 30));
    this.add(jLabel5,           new XYConstraints(50, 208, -1, 31));
    this.add(jButton3,      new XYConstraints(340, 208, 86, 31));
    this.add(jScrollPane1,                   new XYConstraints(68, 254, 349, 206));
    this.add(jButton1,              new XYConstraints(330, 70, 100, 30));
    this.add(jLabel6,               new XYConstraints(300, 152, 171, 30));
    jScrollPane1.getViewport().add(jTextArea1, null);
  }
  //Get Applet information
  public String getAppletInfo() {
    return "Applet Information";
  }
  //Get parameter info
  public String[][] getParameterInfo() {
    return null;
  }

  void jButton1_actionPerformed(ActionEvent e) {
    connect();
    if(connected)
    {
      jTextField3.setEnabled(false);
      jButton1.setEnabled(false);
    }
  }

  void jButton2_actionPerformed(ActionEvent e) {
    disconnect();
    jTextField1.setEnabled(true);
    jTextField2.setEnabled(true);
    jTextField3.setEnabled(true);
    jButton1.setEnabled(true);
  }

  void jButton3_actionPerformed(ActionEvent e) {
    if(service==null)
      return;
    try
    {
      service.sendMessage(this,jTextField4.getText());
      jTextField4.setText("");
    }
    catch(RemoteException exp)
    {
      System.out.println(exp);
      jTextArea1.append("信息发送失败 ...\n");
    }
  }
}

class ChatClientApplet_jButton1_actionAdapter implements java.awt.event.ActionListener {
  ChatClientApplet adaptee;

  ChatClientApplet_jButton1_actionAdapter(ChatClientApplet adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}

class ChatClientApplet_jButton2_actionAdapter implements java.awt.event.ActionListener {
  ChatClientApplet adaptee;

  ChatClientApplet_jButton2_actionAdapter(ChatClientApplet adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton2_actionPerformed(e);
  }
}

class ChatClientApplet_jButton3_actionAdapter implements java.awt.event.ActionListener {
  ChatClientApplet adaptee;

  ChatClientApplet_jButton3_actionAdapter(ChatClientApplet adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton3_actionPerformed(e);
  }
}