Question

首先，我想提前道歉，因为考虑到我的编码技能水平，我很可能会打扰很多编码员。

我喜欢编码！这真的让我很开心，我希望能够进步并变得更好但我不能独自完成，至少我认为是这样。

所以这是我在Eclipse上的问题，它一直告诉我，我的线路上有很多错误，但每当我尝试修复它们时（按照很多教程的方式）它都不想修复。我在想它可能是eclispe程序的漏洞或类似的东西！（或者它可能只是我是一个白痴，不知道如何编码，这两个。）

所以这是我的编码，我正在尝试制作一个欢迎玩家的插件，并给他们一个温暖的信息以及一些免费体验点和一个免费项目。

显然有一个听众，这是我的编码。请告诉我有什么问题！

主：

package me.noobpowah;

import.org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;

public class ServerFunctions extends JavaPlugin {

@Override
public void onEnable() {
    new JoinListener(this);
}

@Override
public void onDisable() {

}

public boolean onCommand(CommandSender sender, Command cmd, String label, String[ args]) {

    if (cmd.getName().equalsIgnoreCase("totalexp") && sender instanceof Player) {

        Player player = (Player) sender;

        player.sendMessage(ChatColor.GOLD + "Total EXP: " + player.gettotalExperience());

        return true;

    } else if (cmd.getName().equalsIgnoreCase("exp") && sender instanceof Player) {

        Player player = (Player) sender;

        player.sendMessage(ChatColor.GOLD + "EXP to next level: " + player.getExpToLevel());

        return true;
    }

    return false;
}

}

听众：

package me.noobpowah;

import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.BlockPlaceEvent;
import org.bukkit.ChatColor;
import org.bukkit.inventory;

public class JoinListener {

public JoinListener(ServerFunctions plugin) {
    plugin.getServer().getPluginManager().registerEvents(this, plugin);
}

@EventHandler
public void onEvent(BlockPlaceEvent e) {

    Player player = e.getPlayer();

    e.setJoinMessage(ChatColor.AQUA + "Welcome, " + player.getName() + ", to 
    the server!");

    //If new player
    if (player.hasPlayedBefore() == false) {
        player.sendMessage(ChatColor.Green + "You seem to be new here aren't 
    you? Here! Have a free apple as a welcome gift.");

        //Adds 1 apple to the player's inventory
        player.getInventory().addItem(new ItemStack(Material.APPLE, 1));
    }
}

}

`

Answer 1

<强>解决方案

此解决方案只修复了语法错误，并进行了一些导入。

ServerFunctions类

package me.noobpowah;

import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;

public class ServerFunctions extends JavaPlugin {

@Override
public void onEnable() {
    new JoinListener(this);
}

@Override
public void onDisable() {

}

public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {

    if (cmd.getName().equalsIgnoreCase("totalexp") && sender instanceof Player) {

        Player player = (Player) sender;

        player.sendMessage(ChatColor.GOLD + "Total EXP: " + player.getTotalExperience());

        return true;

    } else if (cmd.getName().equalsIgnoreCase("exp") && sender instanceof Player) {

        Player player = (Player) sender;

        player.sendMessage(ChatColor.GOLD + "EXP to next level: " + player.getExpToLevel());

        return true;
    }

    return false;
}

}

JoinListener类

package me.noobpowah;

import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.BlockPlaceEvent;
import org.bukkit.ChatColor;
import org.bukkit.inventory.ItemStack;

public class JoinListener implements Listener {

public JoinListener(ServerFunctions plugin) {
    plugin.getServer().getPluginManager().registerEvents(this, plugin);
}

@EventHandler
public void onEvent(BlockPlaceEvent e) {

    Player player = e.getPlayer();

    e.setJoinMessage(ChatColor.AQUA + "Welcome, " + player.getName() + ", to the server!");

    //If new player
    if (player.hasPlayedBefore() == false) {
        player.sendMessage(ChatColor.GREEN + "You seem to be new here aren't you? Here! Have a free apple as a welcome gift.");

        //Adds 1 apple to the player's inventory
        player.getInventory().addItem(new ItemStack(Material.APPLE, 1));
    }
}

}

Eclipse显示有错误，但我没有看到错误？

1 个答案: