执行命令时出现Minecraft Bukkit Java错误
当我执行命令“/voltiac”时,它会在控制台中打印此错误,并在minecraft中显示“尝试执行此命令时发生内部错误”。但是当我执行命令“/voltiac-help”和“/voltiac-about”时,它们工作得非常好。我试图让插件执行的是当我执行命令“/voltiac”时,它与执行“/voltiac about”相同 这里是错误执行命令时出现Minecraft Bukkit Java错误,java,arrays,minecraft,bukkit,Java,Arrays,Minecraft,Bukkit,当我执行命令“/voltiac”时,它会在控制台中打印此错误,并在minecraft中显示“尝试执行此命令时发生内部错误”。但是当我执行命令“/voltiac-help”和“/voltiac-about”时,它们工作得非常好。我试图让插件执行的是当我执行命令“/voltiac”时,它与执行“/voltiac about”相同 这里是错误 [12:15:52] [Server thread/INFO]: DiamondDeveloper issued server command: /voltia
[12:15:52] [Server thread/INFO]: DiamondDeveloper issued server command: /voltiac
[12:15:52] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'voltiac' in plugin Voltiac v0.4.4
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140) ~[craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:620) ~[craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1106) [craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:966) [craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:37) [craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:9) [craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_73]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_73]
at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:673) [craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:335) [craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:629) [craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:537) [craftbukkit-1.8.jar:git-Bukkit-18fbb24]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_73]
Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
at ml.voltiac.bukkit.Main.onCommand(Main.java:48) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit-1.8.jar:git-Bukkit-18fbb24]
... 15 more
这是我的密码
public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
Player player = (Player) sender;
// --------voltiac command--------
if (label.equalsIgnoreCase("voltiac")) {
PluginDescriptionFile pdffile = getDescription();
if (!(sender instanceof Player)) {
sender.sendMessage(TextFormat.playerOnly());
return false;
}
if (args[0].equalsIgnoreCase("help")) {
player.sendMessage(ChatColor.RESET + "" + ChatColor.DARK_PURPLE + ChatColor.STRIKETHROUGH
+ "-[-------------------------------------------]-");
player.sendMessage(TextFormat.helpFormat("voltiac", ""));
player.sendMessage(TextFormat.helpFormat("voltiac about", ""));
player.sendMessage(TextFormat.helpFormat("voltiac help", ""));
player.sendMessage(TextFormat.helpFormat("", ""));
player.sendMessage(TextFormat.helpFormat("", ""));
player.sendMessage(ChatColor.RESET + "" + ChatColor.DARK_PURPLE + ChatColor.STRIKETHROUGH
+ "-[-------------------------------------------]-");
} else if (args[0].equalsIgnoreCase("about")) {
player.sendMessage(ChatColor.RESET + "" + ChatColor.DARK_PURPLE + ChatColor.STRIKETHROUGH
+ "-[-------------------------------------------]-");
player.sendMessage(TextFormat.aboutFormat("Name", "Voltiac"));
player.sendMessage(TextFormat.aboutFormat("Version", pdffile.getVersion()));
player.sendMessage(TextFormat.aboutFormat("Made by", "DiamondDeveloper"));
player.sendMessage(TextFormat.aboutFormat("Copyright", "Voltiac 2016"));
player.sendMessage(TextFormat.aboutFormat("Website", ChatColor.UNDERLINE + "www.voltiac.ml"));
player.sendMessage(ChatColor.RESET + "" + ChatColor.DARK_PURPLE + ChatColor.STRIKETHROUGH
+ "-[-------------------------------------------]-");
return true;
} else {
player.sendMessage(ChatColor.RESET + "" + ChatColor.DARK_PURPLE + ChatColor.STRIKETHROUGH
+ "-[-------------------------------------------]-");
player.sendMessage(TextFormat.aboutFormat("Name", "Voltiac"));
player.sendMessage(TextFormat.aboutFormat("Version", pdffile.getVersion()));
player.sendMessage(TextFormat.aboutFormat("Made by", "DiamondDeveloper"));
player.sendMessage(TextFormat.aboutFormat("Copyright", "Voltiac 2016"));
player.sendMessage(TextFormat.aboutFormat("Website", ChatColor.UNDERLINE + "www.voltiac.ml"));
player.sendMessage(ChatColor.RESET + "" + ChatColor.DARK_PURPLE + ChatColor.STRIKETHROUGH
+ "-[-------------------------------------------]-");
return true;
}
return true;
}
return false;
}
}
我在bukkit论坛上得到了这个答案,但是我该怎么做呢
原因:java.lang.ArrayIndexOutOfBoundsException:0
在ml.voltiac.bukkit.Main.onCommand(Main.java:48)~[?:?]
您试图从不包含任何值的数组中获取值(基本Java问题)。在获取任何值之前,请确保数组“args”中存在对象
(顺便说一句,第48行是“sender.sendMessage(TextFormat.playerly());”)很可能stacktrace指出了错误的行,如果在编译后以任何方式操纵该类,就会发生这种情况 查看已执行命令的日志输出
/voltiac
。由于您没有提供任何参数,args
参数将是一个空数组
然后尝试访问args
的第一个元素,而不首先检查它是否有任何参数:
if (args[0].equalsIgnoreCase("help")) {
这可能是您的异常的来源。
这意味着,如果(args.length==0)在任何子命令之前进行检查,则可以首先对其进行
修复。很可能stacktrace指出了错误的行,如果在编译后以任何方式操作该类,则可能会发生这种情况
查看已执行命令的日志输出/voltiac
。由于您没有提供任何参数,args
参数将是一个空数组
然后尝试访问args
的第一个元素,而不首先检查它是否有任何参数:
if (args[0].equalsIgnoreCase("help")) {
这可能是您的异常的来源。
这意味着可以通过在任何子命令之前先执行if(args.length==0)
检查来修复它