package chatclient;import java.awt.*;import java.awt.event.*;import javax.swing.*;//增加的包import java.io.*;import java.net.*;import java.util.*;import java.lang.Thread;import com.borland.jbcl.layout.*;/** * <p>Title: </p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2003</p> * <p>Company: </p> * @author not attributable * @version 1.0 */public class Frame1 extends JFrame {  JPanel contentPane;  JPanel jPanel1 = new JPanel();  JPanel jPanel2 = new JPanel();  XYLayout xYLayout1 = new XYLayout();  JTextArea jTextArea1 = new JTextArea();  XYLayout xYLayout2 = new XYLayout();  JLabel jLabel1 = new JLabel();  JLabel jLabel2 = new JLabel();  JTextField jTextField1 = new JTextField();  JButton jButton1 = new JButton();  JButton jButton2 = new JButton();  JTextField jTextField2 = new JTextField();  JButton jButton3 = new JButton();  JLabel jLabel3 = new JLabel();  JTextField jTextField3 = new JTextField();  XYLayout xYLayout3 = new XYLayout();   java.awt.List list1 = new java.awt.List();   ButtonGroup buttonGroup1 = new ButtonGroup();     JRadioButton jRadioButton1 = new JRadioButton();     JRadioButton jRadioButton2 = new JRadioButton();     JScrollPane jScrollPane1 = new JScrollPane();     JScrollPane jScrollPane2 = new JScrollPane();//定義數據流和網絡變量  Socket socket=null;  //定義連接套接字  PrintStream ps=null;  //定義打印流  Listen listen=null;  //定義客戶端線程  int count=0;  XYLayout xYLayout4 = new XYLayout();  XYLayout xYLayout5 = new XYLayout();  XYLayout xYLayout6 = new XYLayout();    //定義目前的連接用戶數目//Construct the frame  public Frame1() {    enableEvents(AWTEvent.WINDOW_EVENT_MASK);    try {      jbInit();    }    catch(Exception e) {      e.printStackTrace();    }  }  //Component initialization  private void jbInit() throws Exception  {    contentPane = (JPanel) this.getContentPane();    contentPane.setLayout(xYLayout4);    this.setSize(new Dimension(400, 328));    this.setTitle("聊天客戶端");    jPanel2.setLayout(xYLayout5);    jPanel1.setLayout(xYLayout6);    jLabel1.setText("連接用戶");    jLabel2.setText("選擇消息發送方式");    jButton1.setText("發送");    jButton1.addActionListener(new Frame1_jButton1_actionAdapter(this));    jButton2.setText("退出");    jButton2.addActionListener(new Frame1_jButton2_actionAdapter(this));    jButton3.setText("連接");    jButton3.addActionListener(new Frame1_jButton3_actionAdapter(this));    jTextArea1.setText("");    jTextField1.setText("");    jTextField2.setEditable(false);    jTextField2.setText("");    jLabel3.setText("連接用戶名");    jTextField3.setText("");    jRadioButton1.setEnabled(true);    jRadioButton1.setSelected(true);    jRadioButton1.setText("廣播發送");    jRadioButton2.setToolTipText("");    jRadioButton2.setSelected(false);    jRadioButton2.setText("選擇發送");    jPanel1.add(jScrollPane1,     new XYConstraints(5, 34, 134, 129));    jPanel1.add(jLabel2, new XYConstraints(13, 175, 105, 28));    jPanel1.add(jRadioButton1, new XYConstraints(17, 198, -1, -1));    jPanel1.add(jRadioButton2,   new XYConstraints(17, 216, -1, -1));    jPanel1.add(jLabel1, new XYConstraints(16, 4, 81, 20));    jScrollPane1.getViewport().add(list1, null);    contentPane.add(jTextField2,  new XYConstraints(3, 283, 371, 29));    contentPane.add(jButton1, new XYConstraints(254, 245, -1, -1));    contentPane.add(jTextField1,  new XYConstraints(23, 247, 215, 25));    contentPane.add(jButton2, new XYConstraints(318, 246, -1, -1));    contentPane.add(jPanel1, new XYConstraints(1, 0, 170, 246));    jPanel2.add(jTextField3, new XYConstraints(71, 3, 80, -1));    jPanel2.add(jButton3,  new XYConstraints(155, 0, 65, -1));    jPanel2.add(jScrollPane2,   new XYConstraints(24, 31, 194, 162));    jPanel2.add(jLabel3, new XYConstraints(0, 3, -1, -1));    jScrollPane2.getViewport().add(jTextArea1, null);    contentPane.add(jPanel2,    new XYConstraints(159, 1, 223, 209));    buttonGroup1.add(jRadioButton2);    buttonGroup1.add(jRadioButton1);  }  //Overridden so we can exit when window is closed  protected void processWindowEvent(WindowEvent e) {    super.processWindowEvent(e);    if (e.getID() == WindowEvent.WINDOW_CLOSING) {      disconnect();      System.exit(0);    }  }  public void disconnect(){  //斷開連接運行的方法   if(socket!=null){     try {       ps.println("QUIT:"+listen.name);       ps.flush();       socket.close();       count--;     }     catch(IOException e){       jTextArea1.append("Error："+e);     }     //finally{}   }  } public class Listen extends  Thread{            //   定義客戶端線程用來監聽服務器傳來的信息    //定義的數據成員    String name=null;//用來存儲客戶端連接以后的name 信息    DataInputStream dis=null;  //用來實現客戶端接受服務器的數據的輸入流    PrintStream ps=null;//用來實現從客戶端發送數據到服務器端的打印流    Socket socket=null;//用來存儲客戶單的socket信息    Frame1 parent=null;//用來存儲當前運行的實例    public Listen (Frame1 p,String n,Socket s){//Listen 類的構造器      parent=p;      name=n;      socket=s;      try{        //實例化兩個數據流         dis=new DataInputStream(s.getInputStream());         ps=new PrintStream(s.getOutputStream());      }      catch(IOException e){        parent.jTextArea1.append("Error:  "+e+"\n");        parent.disconnect();      }    }//結束類的構造器    public void run(){      //線程的運行方法      String message=null;      while(true){        //無限循環用于監聽信息        try{          message=dis.readLine();//讀取服務器傳來的信息        }        catch(IOException e){          parent.jTextArea1.append("Error:  "+e+"\n");          parent.disconnect();        }        if(message==null){         //如果服務器傳來的信息為空，則斷開此次連接         parent.listen=null;         parent.socket=null;         parent.list1.clear();         return;        }        StringTokenizer str=new StringTokenizer(message,":");        //用StringTokenizer類來實現讀取分段字符        String keyword=str.nextToken();        //讀取信息頭來識別試何種信息        if(keyword.equalsIgnoreCase("PEOPLE")){          //如果讀取的是PEOPLE，則表示是服務器發送的客戶連接信息，          //此時，需要刷新客戶端的用戶列表          count=0;          parent.list1.clear();         while(str.hasMoreTokens()){           String st = str.nextToken();           //讀取加入的用戶名稱           parent.list1.addItem(st);          //添加到用戶列表中          count++;//統計用戶數目        }        jTextField2.setText("目前連接的用戶數： "+String.valueOf(count));        }        else if(keyword.equalsIgnoreCase("MSG"))        {          //如果讀取的是MSG，則表示是服務器發送的客戶傳來的聊天信息，          //此時，需要刷新客戶端的連天信息顯示區，將聊天信息顯示出來          String broadcast=str.nextToken();//接受的信息類型，是單播還是廣播          String usr=str.nextToken();//信息發送的來源          parent.jTextArea1.append(usr);          parent.jTextArea1.append(str.nextToken("\0"));          parent.jTextArea1.append("\n");        }          else if(keyword.equalsIgnoreCase("QUIT")){            //如果關鍵字是QUIT，則判斷是服務器的關閉信息，            //用戶需要用此信息來切斷此次連接            String who = str.nextToken();            if (who.equalsIgnoreCase("SERVER")) {              parent.jTextArea1.append("服務器關閉\n");              try {                parent.listen.stop();                parent.listen = null;                parent.socket.close();                parent.socket = null;              }              catch (IOException e) {                parent.jTextArea1.append("Error: " + e + "\n");              }              parent.list1.clear();              return;          }          else{              parent.jTextArea1.append(who+"已經離開\n");          }          }          else if(keyword.equalsIgnoreCase("FAULTNAME"))          {            parent.jTextArea1.append("用戶名錯誤\n");          }      }    }//結束run方法  }//結束內部的Listen類 void jButton3_actionPerformed(ActionEvent e) { //用戶點擊“連接”按鈕的處理方法 if(socket==null){  try{    socket = new Socket(InetAddress.getLocalHost(), 4000);    //使用端口8888實例化一個本地的套接字    //socket.setSoTimeout(20000);    //設置連接的最長時間為20秒    if (socket != null) {      ps = new PrintStream(socket.getOutputStream());      //將ps指向socket的輸出流      StringBuffer info = new StringBuffer("PEOPLE:");      //定義一個字符緩沖區存儲發送信息      //其中用PEOPLE為關鍵字，讓服務器識別為連接信息      //并將name以及IP信息用“：”分開，實現在服務器端通過用      //StringTokenizer類來讀取數據      String userinfo = jTextField3.getText() + ":" +          InetAddress.getLocalHost().toString();      ps.println(info.append(userinfo));      ps.flush();      listen = new Listen(this, jTextField3.getText(), socket);      listen.start();      jTextArea1.append(jTextField3.getText() + "登錄成功"+"\n");      count++;      jTextField2.setText("目前連接的用戶數： " + String.valueOf(count));    }     else{      jTextArea1.append(jTextField3.getText()+"登錄失敗");     }  }   catch(IOException ee){     jTextArea1.append(jTextField3.getText()+"登錄失敗");     disconnect();   }  }//end of if  }///結束“連接”方法  void jButton1_actionPerformed(ActionEvent e) {   //用戶點擊“發送”按鈕的處理方法   if(socket!=null){     StringBuffer message=new StringBuffer("MSG:");     //定義一個字符緩沖區存儲發送信息     //其中用MSG為關鍵字，讓服務器識別為聊天信息     try{       String msg=new String(jTextField1.getText());     }     catch(Exception ex){}    if(jRadioButton1.isSelected()){    //查看選擇的發送方式為“廣播發送”還是“選擇發送”      message.append("BROAD:");    }    else{      message.append(list1.getSelectedItem()+":");    }      message.append(listen.name+":");     ps.println(message.append(jTextField1.getText()));     jTextField1.setText("");     //用打印流發送聊天信息     ps.flush();   }//結束if  }//結束“發送”的處理方法  void jButton2_actionPerformed(ActionEvent e) {  //用戶點擊“退出”按鈕的處理方法  disconnect();  System.exit(0);  }}//end of Frame1 classclass Frame1_jButton2_actionAdapter implements java.awt.event.ActionListener {  Frame1 adaptee;  Frame1_jButton2_actionAdapter(Frame1 adaptee) {    this.adaptee = adaptee;  }  public void actionPerformed(ActionEvent e) { adaptee.jButton2_actionPerformed(e);  }}class Frame1_jButton1_actionAdapter implements java.awt.event.ActionListener {  Frame1 adaptee;  Frame1_jButton1_actionAdapter(Frame1 adaptee) {    this.adaptee = adaptee;  }  public void actionPerformed(ActionEvent e) {    adaptee.jButton1_actionPerformed(e);  }}class Frame1_jButton3_actionAdapter implements java.awt.event.ActionListener {  Frame1 adaptee;  Frame1_jButton3_actionAdapter(Frame1 adaptee) {    this.adaptee = adaptee;  }  public void actionPerformed(ActionEvent e) {    adaptee.jButton3_actionPerformed(e);  }}