Help buylist npe

[GoldenNightmare]

when i got to shop and try to buy weapon please help

java.lang.NullPointerException
        at com.l2jserver.gameserver.model.actor.instance.L2MerchantInstance.showBuyWindow(L2MerchantInstance.java:107)
        at com.l2jserver.gameserver.model.actor.instance.L2MerchantInstance.showBuyWindow(L2MerchantInstance.java:87)
        at handlers.bypasshandlers.Buy.useBypass(Buy.java:54)
        at com.l2jserver.gameserver.model.actor.L2Npc.onBypassFeedback(L2Npc.java:776)
        at com.l2jserver.gameserver.model.actor.instance.L2PetManagerInstance.onBypassFeedback(L2PetManagerInstance.java:164)
        at com.l2jserver.gameserver.network.clientpackets.RequestBypassToServer.runImpl(RequestBypassToServer.java:197)
        at com.l2jserver.gameserver.network.clientpackets.L2GameClientPacket.run(L2GameClientPacket.java:68)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)

 

 

/*
 * Copyright (C) 2004-2016 L2J Server
 * 
 * This file is part of L2J Server.
 * 
 * L2J Server is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * L2J Server is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package com.l2jserver.gameserver.model.actor.instance;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.l2jserver.gameserver.data.xml.impl.BuyListData;
import com.l2jserver.gameserver.datatables.MerchantPriceConfigTable;
import com.l2jserver.gameserver.datatables.MerchantPriceConfigTable.MerchantPriceConfig;
import com.l2jserver.gameserver.enums.InstanceType;
import com.l2jserver.gameserver.model.actor.templates.L2NpcTemplate;
import com.l2jserver.gameserver.model.buylist.L2BuyList;
import com.l2jserver.gameserver.network.serverpackets.ActionFailed;
import com.l2jserver.gameserver.network.serverpackets.BuyList;
import com.l2jserver.gameserver.network.serverpackets.ExBuySellList;

/**
 * This class ...
 * @version $Revision: 1.10.4.9 $ $Date: 2005/04/11 10:06:08 $
 */
public class L2MerchantInstance extends L2NpcInstance
{
	private static final Logger LOG = LoggerFactory.getLogger(L2MerchantInstance.class);
	private MerchantPriceConfig _mpc;
	
	/**
	 * Creates a merchant,
	 * @param template the merchant NPC template
	 */
	public L2MerchantInstance(L2NpcTemplate template)
	{
		super(template);
		setInstanceType(InstanceType.L2MerchantInstance);
	}
	
	@Override
	public void onSpawn()
	{
		super.onSpawn();
		_mpc = MerchantPriceConfigTable.getInstance().getMerchantPriceConfig(this);
	}
	
	@Override
	public String getHtmlPath(int npcId, int val)
	{
		String pom = "";
		
		if (val == 0)
		{
			pom = "" + npcId;
		}
		else
		{
			pom = npcId + "-" + val;
		}
		
		return "data/html/merchant/" + pom + ".htm";
	}
	
	/**
	 * @return Returns the mpc.
	 */
	public MerchantPriceConfig getMpc()
	{
		return _mpc;
	}
	
	public final void showBuyWindow(L2PcInstance player, int val)
	{
		showBuyWindow(player, val, true);
	}
	
	public final void showBuyWindow(L2PcInstance player, int val, boolean applyTax)
	{
		final L2BuyList buyList = BuyListData.getInstance().getBuyList(val);
		if (buyList == null)
		{
			LOG.warn("BuyList not found! BuyListId: {}", val);
			player.sendPacket(ActionFailed.STATIC_PACKET);
			return;
		}
		
		if (!buyList.isNpcAllowed(getId()))
		{
			LOG.warn("Npc not allowed in BuyList! BuyListId: {} NpcId: {}", val, getId());
			player.sendPacket(ActionFailed.STATIC_PACKET);
			return;
		}
		
		final double taxRate = (applyTax) ? getMpc().getTotalTaxRate() : 0;
		
		player.setInventoryBlockingStatus(true);
		if (player.isGM())
		{
			player.sendMessage("Buy List [" + buyList.getListId() + "]");
		}
		player.sendPacket(new BuyList(buyList, player.getAdena(), taxRate));
		player.sendPacket(new ExBuySellList(player, taxRate, false));
		player.sendPacket(ActionFailed.STATIC_PACKET);
	}
}

 

[Solomun]

Read the error. In 107 line you get NPE.

Read this : What is null pointer exception and how do i fix it?

[Nightw0lf]

in method showBuyWindow you dont check for null player,

if (player == null) return;

[Reborn12]

It have something to do with buylists 

If npc id is custom you may have to add it in allowednpcs for acis is castles.xml as i remember l2jserver i dont know

[Solomun]

I say that the getMpc() method returns null.

[SweeTs]

Shouldn't it be getNpc? :D

[melron]

1 hour ago, SweeTs said:

Shouldn't it be getNpc? :D

no :P 

public MerchantPriceConfig getMpc()

 

this config is null