保存玩家庫存

處理允許傳輸世界的命令，我試圖保存玩家庫存。保存玩家庫存

public void savePlayerInv(Player p, World w){ 
    File playerInvConfigFile = new File(plugin.getDataFolder() + File.separator + "players" + File.separator + p.getName(), "inventory.yml"); 
    FileConfiguration pInv = YamlConfiguration.loadConfiguration(playerInvConfigFile); 
    PlayerInventory inv = p.getInventory(); 
    int i = 0; 

    for (ItemStack stack : inv.getContents()) { 
     //increment integer 
     i++; 
     String startInventory = w.getName() + ".inv." + Integer.toString(i); 

     //save inv 
     pInv.set(startInventory + ".amount", stack.getAmount()); 
     pInv.set(startInventory + ".durability", Short.toString(stack.getDurability())); 
     pInv.set(startInventory + ".type", stack.getTypeId()); 
     //pInv.set(startInventory + ".enchantment", stack.getEnchantments()); 
     //TODO add enchant saveing 
    } 

    i = 0; 
    for (ItemStack armor : inv.getArmorContents()){ 
      i++; 
      String startArmor = w.getName() + ".armor." + Integer.toString(i); 

      //save armor 
      pInv.set(startArmor + ".amount", armor.getAmount()); 
      pInv.set(startArmor + ".durability", armor.getDurability()); 
      pInv.set(startArmor + ".type", armor.getTypeId()); 
      //pInv.set(startArmor + ".enchantment", armor.getEnchantments()); 
    } 

    //save exp 
    if (p.getExp() != 0) { 
      pInv.set(w.getName() + ".exp", p.getExp()); 
    } 
}

的問題是線130：

pInv.set(startInventory + ".amount", stack.getAmount());

我得到這個堆棧跟蹤：

2012-03-21 13:23:25 [SEVERE] null 
org.bukkit.command.CommandException: Unhandled exception executing command 'wtp' in plugin Needs v1.0 
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42) 
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:166) 
at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:461) 
at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:818) 
at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:778) 
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:761) 
at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:33) 
at net.minecraft.server.NetworkManager.b(NetworkManager.java:229) 
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:112) 
at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78) 
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:554) 
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:452) 
at net.minecraft.server.ThreadServerApplication.run(SourceFile:490) 
    Caused by: java.lang.NullPointerException 
at com.devoverflow.improved.needs.commands.CommandWorldtp.savePlayerInv(CommandWorldtp.java:130) 
at com.devoverflow.improved.needs.commands.CommandWorldtp.onCommand(CommandWorldtp.java:60) 
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40) 
... 12 more

來源

2012-03-21 HcgRandon

當你做inv.getContents()，您檢索播放器庫存的每插槽，包括空插槽。這些空插槽返回null，因爲它們中沒有任何內容。

要修復，添加一個if語句啓動的循環後，右：

for (ItemStack stack : inv.getContents()) { 
    if (stack == null) continue; 
    // And keep everything else the same 
}

你以後可能會遇到的問題將是它來自完全相同的空位置換的一切。我建議使用HashMap或其他東西來跟蹤項目來自哪個插槽。

來源

2012-03-21 22:06:37 Perdog

保存玩家庫存

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