java WebSocket 即时通讯服务端代码

ackage org.fh.plugins.ChatServer;
 
import java.net.InetSocketAddress;
import java.net.UnknownHostException;
 
import org.java_websocket.WebSocket;
import org.java_websocket.framing.Framedata;
import org.java_websocket.handshake.ClientHandshake;
import org.java_websocket.server.WebSocketServer;
 
/**
 * 说明：websocket服务端
 * 作者：FH Admin
 * from：fhadmin.cn
 */
public class ChatServer extends WebSocketServer{
 
    public BulletChatServer(int port) throws UnknownHostException {
        super(new InetSocketAddress(port));
    }
 
    public BulletChatServer(InetSocketAddress address) {
        super(address);
    }
 
    /**
     * 客户端发送消息到服务器时触发事件
     */
    @Override
    public void onMessage(WebSocket conn, String message){
        message = message.toString();
        if(null != message && message.startsWith("[video313596790]")){
            this.userjoin(message.replaceFirst("\[video313596790\]", ""),conn);
        }else{
            BulletChatServerPlool.sendMessage(message.toString());//向所有在线用户发送消息
        }
    }
 
    public void onFragment( WebSocket conn, Framedata fragment ) {
    }
    
    /**
     * 用户加入处理
     * @param user
     */
    public void userjoin(String user, WebSocket conn){
        BulletChatServerPlool.addUser(user,conn);                            //向连接池添加当前的连接对象
    }
    
    /**
     * 用户下线处理
     * @param user
     */
    public void userLeave(WebSocket conn){
        BulletChatServerPlool.removeUser(conn);                                 //在连接池中移除连接
    }
    
    /**
     * 触发连接事件
     */
    @Override
    public void onOpen( WebSocket conn, ClientHandshake handshake ) {}
 
    /**
     * 触发关闭事件
     */
    @Override
    public void onClose( WebSocket conn, int code, String reason, boolean remote ) {
        userLeave(conn);
    }
    
    /**
     * 触发异常事件
     */
    @Override
    public void onError( WebSocket conn, Exception ex ) {
        if( conn != null ) {}
    }
    
    @Override
    public void onStart() {}
 
}