我有下面的代码。我正在尝试存储玩家的坐标在Minecraft（Java版）服务器上每秒（20个滴答声）。
服务器是一个“纸”服务器（由Shockbyte在外部托管），代码是使用Bukkit API、Maven工具和Java编程语言创建的。
纸质服务器的版本为：最新论文（Java 17 -当前为1.19.2）。
坐标将存储在文件**'saveTo'中（即存储插件记录的数据的位置）。
虽然我的代码在eclipse**（我用来修改代码的软件）上运行得很好（没有错误），但当我尝试将其导出为jar文件，然后将其上传到我的服务器（在插件文件夹中）时，它似乎不工作，我不知道为什么。
我会非常感激你的帮助！

package newestfile.here.newestplugin;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.FileWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.io.File;
import org.bukkit.event.player.PlayerQuitEvent;
import org.bukkit.event.EventHandler;
import org.bukkit.entity.Player;
import org.bukkit.Location;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.Bukkit;
import java.util.logging.Logger;
import org.bukkit.event.Listener;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.scheduler.BukkitRunnable;

public class Main extends JavaPlugin implements Listener
{
    Logger trackerLogger;
    boolean stopRepeater;
    
    public Main() {
        this.trackerLogger = Bukkit.getLogger();
        this.stopRepeater = true;
    }
    
    public void onEnable() {
        Bukkit.getServer().getPluginManager().registerEvents(this,this);
        this.trackerLogger.info("HELLO! WELCOME TO THE TRACKER PLUGIN");
        if(!this.getDataFolder().exists())
        {
            this.getDataFolder().mkdir();
        }
    }
    
    public void onDisable() {
        this.trackerLogger.info("SHUTTING DOWN!");
    }
    
    @EventHandler
    public void onLogin(final PlayerJoinEvent event) {
        final Player thePlayer = event.getPlayer();
        this.stopRepeater = true;
        final Location playerSpawnLocation = new Location(thePlayer.getWorld(), (double)thePlayer.getLocation().getBlockX(), (double)thePlayer.getLocation().getBlockY(), (double)thePlayer.getLocation().getBlockZ());
        this.trackerLogger.info(String.valueOf(thePlayer.getPlayer().getName()) + " is logging in!");
        this.trackerLogger.info("Welcome " + thePlayer.getPlayer().getName() + ". Your current position is: " + playerSpawnLocation);
        
        new BukkitRunnable(){
               public void run() {
                if (Main.this.stopRepeater) {
                  Main.this.logToFile(thePlayer, thePlayer.getLocation());
                        }
                    }
               }.runTaskTimer(this, 0, 20);}
    
    @EventHandler
    public void onQuit(final PlayerQuitEvent event) {
        this.stopRepeater = false;
        this.trackerLogger.info(String.valueOf(event.getPlayer().getName()) + " has left the game");
    }
    
    public void logToFile(final Player currentPlayer, final Location playerCurrentLocation) {
        try {
            final File dataFolder = new File(this.getDataFolder() + File.separator + currentPlayer.getPlayer().getName());
            if (!dataFolder.exists()) {
                dataFolder.mkdir();
            }
            final File saveTo = new File(dataFolder, String.valueOf(currentPlayer.getPlayer().getName()) + ".log");
            if (!saveTo.exists()) {
                saveTo.createNewFile();
            }
            final Date nowDate = new Date();
            final SimpleDateFormat format = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
            final FileWriter fw = new FileWriter(saveTo, true);
            final PrintWriter pw = new PrintWriter(fw);
            pw.println(String.valueOf(format.format(nowDate)) + " CurrentLocation(x,y,z): " + playerCurrentLocation.getBlockX() + " " + playerCurrentLocation.getBlockY() + " " + playerCurrentLocation.getBlockZ());
            pw.close();
        }
        catch (IOException e) {
            e.printStackTrace();
        }
    }
}