java - 命令不起作用

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public class Main extends JavaPlugin
{

    // Logger variable
    Logger myPluginLogger = Bukkit.getLogger();

    // Does when plugin is disabled - console logging
    @Override
    public void onDisable()
    {
        myPluginLogger.info("Disabling Political Parties...");
    }

    // Plugin chat help function
    public void sendPlayerHelp(String permissions, Player player)
    {
        // If player does not belong to a party, show them these commands
        if (permissions == "nonpartisan")
        {
            player.sendMessage(ChatColor.YELLOW + "Political Parties by TerraCraft - version 1.0");
            player.sendMessage(ChatColor.RED + "/party create <party name> " + ChatColor.YELLOW + "Start a political party");
            player.sendMessage(ChatColor.RED + "/party list " + ChatColor.YELLOW + "Shows a list of all of the current political parties");
            player.sendMessage(ChatColor.RED + "/party info <party> " + ChatColor.YELLOW + "Shows info about a specific party");
        }
        // If a player does belong to a party, show them these commands
        else if (permissions == "inparty")
        {
            player.sendMessage(ChatColor.YELLOW + "Political Parties by TerraCraft - version 1.0");
            player.sendMessage(ChatColor.RED + "/party leave " + ChatColor.YELLOW + "Leave your current political party");
            player.sendMessage(ChatColor.RED + "/party list " + ChatColor.YELLOW + "Shows a list of all of the current political parties");
            player.sendMessage(ChatColor.RED + "/party info <party> " + ChatColor.YELLOW + "Shows info about a specific party");
            player.sendMessage(ChatColor.RED + "/party deposit <amount> " + ChatColor.YELLOW + "Deposit a specific sum into the party bank account");
            player.sendMessage(ChatColor.RED + "/party chat <message> " + ChatColor.YELLOW + "Say specified message in party chat");
        }
        // If a player is the leader of a party, show them these commands
        else if (permissions == "partyleader")
        {
            player.sendMessage(ChatColor.YELLOW + "Political Parties by TerraCraft - version 1.0");
            player.sendMessage(ChatColor.RED + "/party delete " + ChatColor.YELLOW + "Deletes your current political party");
            player.sendMessage(ChatColor.RED + "/party list " + ChatColor.YELLOW + "Shows a list of all of the current political parties");
            player.sendMessage(ChatColor.RED + "/party info <party> " + ChatColor.YELLOW + "Shows info about a specific party");
            player.sendMessage(ChatColor.RED + "/party deposit <amount> " + ChatColor.YELLOW + "Deposit a specific sum into the party bank account");
            player.sendMessage(ChatColor.RED + "/party withdraw <amount> " + ChatColor.YELLOW + "Withdraw a specific sum from the party bank account");
            player.sendMessage(ChatColor.RED + "/party policy <add|remove> [index] [message] " + ChatColor.YELLOW + "Add or remove a specific policy to/from your political party");
            player.sendMessage(ChatColor.RED + "/party invite <player> " + ChatColor.YELLOW + "Invite a player to your political party");
            player.sendMessage(ChatColor.RED + "/party kick <player> " + ChatColor.YELLOW + "Kick a player from your political party");
            player.sendMessage(ChatColor.RED + "/party giveleader <player> " + ChatColor.YELLOW + "Resign yourself as party leader and give it to another player");
            player.sendMessage(ChatColor.RED + "/party chat <message> " + ChatColor.YELLOW + "Say specified message in party chat");    
        }
    }

    // Command function
    public boolean onCommand(CommandSender theSender, Command cmd, String[] args, String commandLabel)
    {
        // Party command
        if (cmd.getName().equalsIgnoreCase("party"))
        {
            Player player = (Player) theSender;

            // If no arguments are specified, or if the first argument is equal to help, or ?, show them help
            if (args.length == 0 || args[0].equalsIgnoreCase("help") || args[0].equalsIgnoreCase("?"))
            {
                sendPlayerHelp("nonpartisan", player);
            }
            else
            {

            }
            return true;
        }
        else
        {
        }
        return false;
    }

}

您好，我之前已经创建了基本的 Bukkit 服务器插件，并且工作正常。我正在创建一个新的，但由于某种原因，它不会运行该命令。只是为了澄清一下，插件 YAML 已正确完成(导入也是如此，我只是觉得不需要包含它们)，并且没有编译错误。我在命令 YAML 文件中有该命令，当我加载插件时，它会显示在我的插件列表中，当我执行/help 时，它会显示在我的插件列表中。当我运行该命令时，它只返回用法:“/party”，但不会执行其他操作(向玩家发送帮助消息)。我不太清楚为什么它不起作用。我是否错误地忘记了什么？另外，这是我的第一个问题，如果不符合标准，我深表歉意。

Answer 1

我不确定楼上的人在说什么，但让我解释一下:是的，使用 cmd.getName() 比 commandLabel 更好，原因如下:当您在plugin.yml 中注册命令时，您必须为其指定一个名称。然后，在该名称下，您可以设置描述、权限等内容，在本例中最重要的是 - 它的别名。当您设置其别名时，当在命令中调用任何这些别名时，该命令将运行。标签将是运行的确切别名，cmd.getName() 将是您注册的命令的名称。至于你的问题，我猜它就在这里:

public boolean onCommand(CommandSender theSender, Command cmd, String[] args, String commandLabel)

应该是

public boolean onCommand(CommandSender theSender, Command cmd, String commandLabel, String[] args)

顺序始终为 CommandSender、Command、String、String[]。您应该在 onCommand 方法上方添加 @Override 标记，这样就会抛出这样的错误，您就会知道这就是问题所在。