{
                            sendClients(message);
                            String now=gettime();
                            jTextArea1.append("系統(tǒng)消息: "+now+"/"+fromcast+"->"+"所用用戶"+info+"\n");
                        try{
                          int rsupdate=stmt.executeUpdate("INSERT INTO sc(St,Sf,Sb,Content)"+
                                    "VALUES ('"+now+"','"+fromcast+"','所有用戶','"+info+"');");
                            }
                        catch(SQLException  ex){
                        }
                    }
                    else
                    {
                            sendtoClient(message,broadcast);
                            String now=gettime();
                            jTextArea1.append("系統(tǒng)消息: "+now+"/"+fromcast+"->"+broadcast+info+"\n");
                  try{
                 int rsupdate=stmt.executeUpdate("INSERT INTO sc(St,Sf,Sb,Content)"+
                   "VALUES ('"+now+"','"+fromcast+"','"+broadcast+"','"+info+"');");
                   }
                 catch(SQLException  ex){
                   }
                }
            }
            else if(keyword.equalsIgnoreCase("QUIT"))
             {
                   ((DefaultListModel)jList1.getModel()).removeAllElements();
                    disconnect(this);
                  for(int i=0;i<clients.size();i++)
                    {
                    Client listdata1=(Client)clients.elementAt(i);
                    jList1.setModel(dld);
                    dld.addElement(listdata1.name+":"+listdata1.ip+"已經(jīng)連接");
                    }
                    notifyRoom();
                 this.stop() ;
            }
            else if(keyword.equalsIgnoreCase("SOU"))
            {
              StringBuffer message=new StringBuffer("SOU:");
              message.append(broadcast+st.nextToken("\0"));
              sendtoClient(message,broadcast);
            }
    }
    }
public void send(StringBuffer msg){
 ps.println(msg);
 ps.flush();
}
}
      public static synchronized void sendClients(StringBuffer msg)
          {
                  for(int i=0;i<clients.size();i++){
                          Client c=(Client)clients.elementAt(i);
                      c.send(msg);
                  }
          }

          public synchronized void sendtoClient(StringBuffer msg,String name)
          {
                  for(int i=0;i<clients.size();i++){
                          Client c=(Client)clients.elementAt(i);
                      if(c.name.equalsIgnoreCase(name))
                      {
                              c.send(msg);
                              break;
                      }
                  }
          }

          public static void notifyRoom()
          {
                  StringBuffer people=new StringBuffer("PEOPLE");
                  for(int i=0;i<clients.size();i++){
                          Client c=(Client)clients.elementAt(i);
                          people.append(":"+c.name);
                  }
                  sendClients(people);
          }

public static String gettime(){
 Date now=new Date();
//獲取系統(tǒng)當(dāng)前時(shí)間并賦值給變量
String time=String.valueOf(now.getYear()+1900)+"."+String.valueOf(now.getMonth()+1)+"."+String.valueOf(now.getDate())+"["+String.valueOf(now.getHours())+":"+String.valueOf(now.getMinutes())+":"+String.valueOf(now.getSeconds()+"]");
return(time);
}

          public static boolean checkName(Client newClient)
          {
          for(int i=0;i<clients.size();i++){
              Client c=(Client)clients.elementAt(i);
              if((c!=newClient)&&c.name.equals(newClient.name))
              {
                return false;
              }
            }
            return true;
          }

          public synchronized void disconnect(Client c)
          {
                  try{
                          String qn=c.name;
                          jTextArea1.append("系統(tǒng)消息:  "+qn+"斷開(kāi)連接\n");
                          active_connects--;
                          c.socket.close();
                      clients.removeElement(c);
                      sendClients(new StringBuffer("QUIT"+":"+qn));
                      jTextField1.setText("目前已經(jīng)有"+clients.size()+"用戶連接");
                      c.socket.close();
                  }
                  catch(IOException e)
                  {
                          jTextArea1.append("系統(tǒng)消息:"+"Error"+e+"\n");
                  }
          }

          public void closeAll()
          {
                  while(clients.size()>0)
                  {
                          Client c=(Client)clients.firstElement();
                          try{
                                  c.socket.close();
                          }
                          catch(IOException e){
                                  jTextArea1.append("系統(tǒng)消息:"+"聊天服務(wù)器"+"Error"+e+"\n");
                          }
                          finally{
                                  clients.removeElement(c);
                          }
                  }
          }

  void jButton1_actionPerformed(ActionEvent e) {
    StringBuffer info=new StringBuffer("MSG:");
    if(jRadioButton1.isSelected()){
            info.append(":"+"BROAD:"+"SERVER"+":");
            info.append(jTextField2.getText());
            sendClients(info);
            String now=gettime();
            jTextArea1.append("系統(tǒng)消息: "+now+"/SERVER"+"->"+"所用用戶:"+jTextField2.getText()+"\n");
try{
int rsupdate=stmt.executeUpdate("INSERT INTO sc(St,Sf,Sb,Content)"+
 "VALUES ('"+now+"','SERVER','所用用戶','"+jTextField2.getText()+"');");
 }
catch(SQLException  ex){}
}
    else{
      info.append(":"+"SERVER:"+"SERVER"+":");
      info.append(jTextField2.getText());
      StringTokenizer st=new StringTokenizer((String)jList1.getSelectedValue(),":");
      String qn=st.nextToken();
      sendtoClient(info,qn);
      String now=gettime();
      jTextArea1.append("系統(tǒng)消息: "+now+"/SERVER"+"->"+qn+":"+jTextField2.getText()+"\n");
      try{
      int rsupdate=stmt.executeUpdate("INSERT INTO sc(St,Sf,Sb,Content)"+
       "VALUES ('"+now+"','SERVER','"+qn+"','"+jTextField2.getText()+"');");
       }
      catch(SQLException  ex){}
    }
    jTextField2.setText("");
  }

  void jButton4_actionPerformed(ActionEvent e) {
    sendClients(new StringBuffer("QUIT:"+"SERVER"));
        closeAll();
        System.exit(0);
  }

  void jButton2_actionPerformed(ActionEvent e) {
    StringTokenizer st=new StringTokenizer((String)jList1.getSelectedValue(),":");
    String qn=st.nextToken();
     for(int i=0;i<clients.size();i++){
         Client c=(Client)clients.elementAt(i);
         if(c.name.equalsIgnoreCase(qn))
         {
           c.send(new StringBuffer("QUIT:"+"DISC"));
            break;
          }
     }
 }

  void this_windowClosing(WindowEvent e) {
    sendClients(new StringBuffer("QUIT:"+"SERVER"));
            closeAll();
            System.exit(0);
  }

}

class linkData {
      public static Statement getStatement() {
          try {
              //注冊(cè)驅(qū)動(dòng)
              Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
              String URL =
                  "jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=Server.mdb";
              Connection conn = DriverManager.getConnection(URL);
              return conn.createStatement();
          }
          catch (SQLException ex) {
              ex.printStackTrace();
              return null;
          }
          catch (ClassNotFoundException ex) {
              ex.printStackTrace();
              return null;
          }
      }
  }








class chatServerFrame_jButton3_actionAdapter implements java.awt.event.ActionListener {
  chatServerFrame adaptee;

  chatServerFrame_jButton3_actionAdapter(chatServerFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton3_actionPerformed(e);
  }
}

class chatServerFrame_jButton1_actionAdapter implements java.awt.event.ActionListener {
  chatServerFrame adaptee;

  chatServerFrame_jButton1_actionAdapter(chatServerFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}

class chatServerFrame_jButton4_actionAdapter implements java.awt.event.ActionListener {
  chatServerFrame adaptee;

  chatServerFrame_jButton4_actionAdapter(chatServerFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton4_actionPerformed(e);
  }
}

class chatServerFrame_jButton2_actionAdapter implements java.awt.event.ActionListener {
  chatServerFrame adaptee;

  chatServerFrame_jButton2_actionAdapter(chatServerFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton2_actionPerformed(e);
  }
}

class chatServerFrame_this_windowAdapter extends java.awt.event.WindowAdapter {
  chatServerFrame adaptee;

  chatServerFrame_this_windowAdapter(chatServerFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void windowClosing(WindowEvent e) {
    adaptee.this_windowClosing(e);
  }
}