import org.spacehq.mc.protocol.MinecraftProtocol; //导入依赖的package包/类
public void init() {
    if (protocol_server == null) {
        try {
            this.protocol_server = new Server(server.getConfiguration().getIPAdress(), server.getConfiguration().getPort(), MinecraftProtocol.class, new TcpSessionFactory());

            protocol_server.setGlobalFlag(ProtocolConstants.VERIFY_USERS_KEY, server.getConfiguration().isOnlineMode());
            protocol_server.setGlobalFlag(ProtocolConstants.SERVER_INFO_BUILDER_KEY, new ServerInfo(server));
            protocol_server.setGlobalFlag(ProtocolConstants.SERVER_LOGIN_HANDLER_KEY, new ServerLogin(server));
            protocol_server.addListener(new CyanServerListener(server));
            protocol_server.setGlobalFlag(ProtocolConstants.SERVER_COMPRESSION_THRESHOLD, 256);

            protocol_server.bind();
            server.getLogger().info("Protocol server is started!");
        } catch (Exception ex) {
            server.getLogger().info("Server crashed: ");
            ex.printStackTrace();
        }
    }
}
 

import org.spacehq.mc.protocol.MinecraftProtocol; //导入依赖的package包/类
public void onLogin(Session session) {
	ServerPlayer newPlayer = new ServerPlayer(session);
	MainMain.players.put(session, newPlayer);
	newPlayer.setWorld(MainMain.defaultWorld);
	session.send(new ServerJoinGamePacket((int) newPlayer.getUEID(), false, GameMode.CREATIVE,
			newPlayer.getWorld().getDimension().toInt(), Difficulty.PEACEFUL, 10, WorldType.DEFAULT, false));

	List<PlayerListEntry> playerList = new ArrayList<PlayerListEntry>();

	MainMain.players.forEach((otherPlayer) -> {
		playerList.add(new PlayerListEntry(otherPlayer.getProfile(), GameMode.CREATIVE, 1,
				new TextMessage(otherPlayer.getName())));
	});

	PlayerListEntry[] playerListPck = new PlayerListEntry[playerList.size()];
	playerList.toArray(playerListPck);

	session.send(new ServerPlayerListEntryPacket(PlayerListEntryAction.ADD_PLAYER, playerListPck));
	MainMain.players.forEach((otherPlayer) -> {
		if (otherPlayer == newPlayer)
			return;
		PlayerListEntry[] newPlayerListing = new PlayerListEntry[1];

		newPlayerListing[0] = new PlayerListEntry(newPlayer.getProfile(), GameMode.CREATIVE, 1,
				new TextMessage(newPlayer.getName()));

		otherPlayer.sendPacket(new ServerPlayerListEntryPacket(PlayerListEntryAction.ADD_PLAYER, newPlayerListing));
	});
	session.send(new ServerPlayerPositionRotationPacket(0, 120, 0, 0, 0, 0));
	MinecraftProtocol protocol = (MinecraftProtocol) session.getPacketProtocol();
	if (protocol.getSubProtocol() == SubProtocol.GAME) {
		GameProfile profile = session.getFlag(MinecraftConstants.PROFILE_KEY);
		logger.info(profile.getName() + " has joined the game");
		MainMain.server.getSessions()
				.forEach((sessions) -> sessions
						.send(new ServerChatPacket(new TextMessage(profile.getName() + " has joined the game")
								.setStyle(new MessageStyle().setColor(ChatColor.YELLOW)))));
	}
}
 

import org.spacehq.mc.protocol.MinecraftProtocol; //导入依赖的package包/类
@Override
public void sessionRemoved(SessionRemovedEvent event) {
    // FOR TODO: Customize leave message
    if (((MinecraftProtocol) event.getSession().getPacketProtocol()).getMode() == ProtocolMode.GAME) {
        GameProfile profile = event.getSession().getFlag(ProtocolConstants.PROFILE_KEY);
        Player player = server.getPlayer(profile.getName());
        server.getPlayerManager().leavePlayer(player);
    }
}
 

import org.spacehq.mc.protocol.MinecraftProtocol; //导入依赖的package包/类
public void onLogin(Session session) {
	NetherPlayer newPlayer = new NetherPlayer(session);

	NetherServer.players.put(session, newPlayer);

	// spawn the player in the world
	newPlayer.setWorld(NetherServer.defaultWorld);

	// send the join game packet
	session.send(new ServerJoinGamePacket((int) newPlayer.getUEID(),
			false, // Hardcore
			GameMode.CREATIVE, // Player gamemode
			newPlayer.getWorld().getDimension().toInt(), // Dimension (-1, 0, 1)
			Difficulty.PEACEFUL, // Difficulty
			10, // Max players
			WorldType.DEFAULT, 
			false // Less debug info
	));
       
       // Send the logging in player the player list
       
       List<PlayerListEntry> playerList = new ArrayList<PlayerListEntry>();
       
       NetherServer.players.forEach((otherPlayer) -> {
           playerList.add(new PlayerListEntry(
                           otherPlayer.getProfile(),
                           GameMode.CREATIVE,        //TODO: game mode
                           1,                        //TODO: ping
                           new TextMessage(otherPlayer.getName())
           ));
       });
       
       PlayerListEntry[] playerListPck = new PlayerListEntry[playerList.size()];
       playerList.toArray(playerListPck);
       
       session.send(new ServerPlayerListEntryPacket(
           PlayerListEntryAction.ADD_PLAYER,
           playerListPck
       ));
       
       // Send the other players the new player listing.
       
       NetherServer.players.forEach((otherPlayer) -> {
           if(otherPlayer == newPlayer) return;
           
           PlayerListEntry[] newPlayerListing = new PlayerListEntry[1];
           
           newPlayerListing[0] = new PlayerListEntry(newPlayer.getProfile(), GameMode.CREATIVE, 1, new TextMessage(newPlayer.getName()));
           
           otherPlayer.sendPacket(new ServerPlayerListEntryPacket(PlayerListEntryAction.ADD_PLAYER, newPlayerListing));
       });

	// send the player position packet to get the player to spawn
	session.send(new ServerPlayerPositionRotationPacket(0, 81.62, 0, 0, 0, 0));

	// send a message to the console and to all players that a new person
	// has joined the game
	MinecraftProtocol protocol = (MinecraftProtocol) session.getPacketProtocol();
	if (protocol.getSubProtocol() == SubProtocol.GAME) {
		GameProfile profile = session.getFlag(MinecraftConstants.PROFILE_KEY);
		logger.info(profile.getName() + " has joined the game");
		NetherServer.server.getSessions()
				.forEach((sessions) -> sessions
						.send(new ServerChatPacket(new TextMessage(profile.getName() + " has joined the game")
								.setStyle(new MessageStyle().setColor(ChatColor.YELLOW)))));
	}
}
 

import org.spacehq.mc.protocol.MinecraftProtocol; //导入依赖的package包/类
public void login( String username, String password ) throws RequestException
{
	Main.debug( "Attempting to log in..." );
	protocol = new MinecraftProtocol( username, password, false );
	Main.debug( "Logged in successfully" );
}