无法导入org.bukkit包，Spigot插件编译失败求助

我正在用Spigot Jar开发一款Spigot插件，功能是给首次加入服务器的玩家随机分配生命值，但编译时无法导入任何org.bukkit相关类。

我的代码：

import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.plugin.java.JavaPlugin;

import java.util.Random;

public class RandomHeartsPlugin extends JavaPlugin implements Listener {

    @Override
    public void onEnable() {
        getServer().getPluginManager().registerEvents(this, this);
    }

    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event) {
        Player player = event.getPlayer();
        int randomHearts = generateRandomHearts();
        player.setHealth(randomHearts);
        player.sendMessage("You have been given " + randomHearts + " extra hearts!");
    }

    private int generateRandomHearts() {
        Random random = new Random();
        // 生成0到20之间的随机整数（包含两端）
        return random.nextInt(21);
    }
}

我使用的编译命令：

javac plugins/RandomHeartsPlugin.java -cp bundler/libaries

调整-cp参数后仍然编译失败，报错信息：

plugins\RandomHeartsPlugin.java:3: error: package org.bukkit.entity does not exist
import org.bukkit.entity.Player;
                        ^
plugins\RandomHeartsPlugin.java:4: error: package org.bukkit.event does not exist
import org.bukkit.event.EventHandler;
                       ^
plugins\RandomHeartsPlugin.java:5: error: package org.bukkit.event does not exist
import org.bukkit.event.Listener;
                       ^
plugins\RandomHeartsPlugin.java:6: error: package org.bukkit.event.player does not exist
import org.bukkit.event.player.PlayerJoinEvent;
                              ^
plugins\RandomHeartsPlugin.java:7: error: cannot find symbol
import org.bukkit.plugin.java.JavaPlugin;
                             ^
  symbol:   class JavaPlugin
  location: package org.bukkit.plugin.java
plugins\RandomHeartsPlugin.java:11: error: cannot find symbol
public class RandomHeartsPlugin extends JavaPlugin implements Listener {
                                        ^
  symbol: class JavaPlugin
plugins\RandomHeartsPlugin.java:11: error: cannot find symbol
public class RandomHeartsPlugin extends JavaPlugin implements Listener {
                                                              ^
  symbol: class Listener
plugins\RandomHeartsPlugin.java:19: error: cannot find symbol
    public void onPlayerJoin(PlayerJoinEvent event) {
                             ^
  symbol:   class PlayerJoinEvent
  location: class RandomHeartsPlugin
plugins\RandomHeartsPlugin.java:18: error: cannot find symbol
    @EventHandler
     ^
  symbol:   class EventHandler
  location: class RandomHeartsPlugin
plugins\RandomHeartsPlugin.java:13: error: method does not override or implement a method from a supertype
    @Override
    ^
plugins\RandomHeartsPlugin.java:15: error: cannot find symbol
        getServer().getPluginManager().registerEvents(this, this);
        ^
  symbol:   method getServer()
  location: class RandomHeartsPlugin
plugins\RandomHeartsPlugin.java:20: error: cannot find symbol
        Player player = event.getPlayer();
        ^
  symbol:   class Player
  location: class RandomHeartsPlugin
12 errors

• 修正路径拼写与依赖指向
  你写的bundler/libaries存在拼写错误，正确应为bundler/libraries。同时要确保该目录下存在完整的Spigot核心Jar包，编译时需直接指向Jar文件而非仅目录。

• 正确配置类路径参数
  编译命令需明确指定Spigot Jar的位置，示例如下：

  # 单个Spigot Jar的情况
  javac plugins/RandomHeartsPlugin.java -cp "bundler/libraries/spigot-[版本号].jar"
  # 目录下有多个依赖Jar的情况
  javac plugins/RandomHeartsPlugin.java -cp "bundler/libraries/*"
  # Windows系统多路径分隔需用分号
  javac plugins/RandomHeartsPlugin.java -cp "bundler/libraries/*;."
  

• 验证Spigot Jar完整性
  确认使用的Spigot Jar是完整的开发包，包含所有org.bukkit相关类。若Jar损坏或不完整，需通过Spigot官方构建工具重新生成。

• 优化功能逻辑（可选）
  当前代码会给每次加入的玩家分配生命值，若要实现仅首次加入的效果，可添加判断：

  @EventHandler
  public void onPlayerJoin(PlayerJoinEvent event) {
      Player player = event.getPlayer();
      if (!player.hasPlayedBefore()) {
          int randomHearts = generateRandomHearts();
          player.setHealth(randomHearts);
          player.sendMessage("你获得了" + randomHearts + "点生命值！");
      }
  }
  

内容的提问来源于stack exchange，提问作者Trinary