使用AJAX和J2EE实现一个网上会议室系统

 
private final List talkers;//排队发言人数Talker
private final List manager;//会议室治理员
private Talker currentTalker;//当前发言人
private String cid;//会议室id
private String title;//会议室主题
private String intro;//会议室简介
private String owner;//会议室创建人
private int maxUser;//最大在线人数
private int interval;//最大刷新时间间隔
private String vrtype;//访问权限
private String vrvalue;//访问值
private String announce;
private String password;//房间进入密码
private int status;//会议室状态
private String filePath;
//private Thread thread;
private boolean isStop=false;
public ChatService()
{
this.msgs=new ArrayList();
this.users=new ArrayList();
this.talkers=new ArrayList();
this.manager=new ArrayList();
this.maxUser=1000;//最大1000人同时
this.interval=1000*60*5;//5分钟以前的信息
}
/**
* 停止所有会议室
*
*/
public static void clear()
{
if(!service.isEmpty())
{
Iterator it=service.values().iterator();
while(it.hasNext())
{
ChatService chat=(ChatService)it.next();
chat.stop();
}
}
service.clear();
}
/**
* 创建一个会议室
* @param name 会议室ID
* @return
*/
public static ChatService create(String name)
{
ChatService ret=null;
if(service.containsKey(name))
{
ChatService s=(ChatService)service.get(name);
s.stop();
service.remove(name);
}
if(service.size(){
ret=new ChatService();
service.put(name,ret);
}
return ret;
}
/**
* 停止某个会议室
* @param name 会议室ID
* @return
*/
public static boolean close(String name)
{
ChatService chatRoom=ChatService.get(name);
if(chatRoom!=null)
{
chatRoom.stop();
service.remove(name);
}
return true;
}
/**
* 获得一个会议室信息
* @param name 会议室ID
* @return
*/
public static ChatService get(String name)
{
if(service.containsKey(name))return (ChatService)service.get(name);
else return null;
}
public void run() {
// TODO Auto-generated method stub
//this.thread=Thread.currentThread();
while(!isStop)
{
//System.out.println("开始监控一个会议室!" this.title);
this.flash();
try{
Thread.sleep(5000);
}
catch(Exception e)
{
e.printStackTrace();
}
}
//System.out.println("结束!");
}
public void stop()
{
this.flashAll();
isStop=true;
}
//会议室中有人发言
public boolean talk(Chat chat)
{
boolean ret=false;
if(canTalk(chat.getSender()))
{
this.msgs.add(chat);
ret=true;
}
return ret;
}
public boolean exit(ChatUser user)
{
talk(geneSystemMsg(user.getUserName() "退出了会议室！"));
return this.users.remove(user);
}
}
//刷新信息，保存会议信息
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