2.0.0

1. 修复低版本可能无法读取物品的bug。
2. 分离配置文件，消息配置文件改为`messages.yml`，前缀配置文件改为`prefixes/*.yml`，便于配置和管理。
3. 允许配置GUI中上一页和下一页的物品。
4. 补全帮助文档，在插件首次加载将提供一份英文版的配置，以便使用。

src/main/java/cc/carm/plugin/userprefix/command/UserPrefixAdminCommand.java

@@ -42,8 +42,8 @@ public class UserPrefixAdminCommand implements CommandExecutor {
             } else if (aim.equalsIgnoreCase("reload")) {
                 long s1 = System.currentTimeMillis();
                 PrefixSelectGUI.closeAll(); // 关掉所有正在显示的前缀列表
-                ConfigManager.reloadConfig(); // 重载配置文件
-                PrefixManager.loadConfiguredPrefixes(); //加载重载后了的配置文件
+                ConfigManager.reload(); // 重载配置文件
+                PrefixManager.loadPrefixes(); //加载重载后了的前缀配置
                 for (Player onlinePlayer : Bukkit.getOnlinePlayers()) {
                     UserManager.checkPrefix(onlinePlayer, false);
                     /*

src/main/java/cc/carm/plugin/userprefix/configuration/PrefixConfig.java

@@ -1,8 +1,11 @@
 package cc.carm.plugin.userprefix.configuration;
 
+import cc.carm.plugin.userprefix.configuration.message.ConfigMessageList;
 import cc.carm.plugin.userprefix.configuration.values.ConfigSound;
 import cc.carm.plugin.userprefix.configuration.values.ConfigValue;
-import cc.carm.plugin.userprefix.configuration.values.ConfigValueList;
+import cc.carm.plugin.userprefix.util.ItemStackFactory;
+import org.bukkit.Material;
+import org.bukkit.inventory.ItemStack;
 
 public class PrefixConfig {
 
@@ -19,18 +22,35 @@ public class PrefixConfig {
 
         public static ConfigValue<String> TITLE = new ConfigValue<>("GUI.title", String.class, "&f&l我的前缀 &8| 列表");
 
+        public static class Items {
+
+            public static ConfigValue<ItemStack> NEXT_PAGE = new ConfigValue<>("GUI.items.next-page", ItemStack.class,
+                    new ItemStackFactory(Material.ARROW)
+                            .setDisplayName("下一页")
+                            .addLore("&7&o右键可前往最后一页哦")
+                            .toItemStack()
+            );
+            public static ConfigValue<ItemStack> PREVIOUS_PAGE = new ConfigValue<>("GUI.items.previous-page", ItemStack.class,
+                    new ItemStackFactory(Material.ARROW)
+                            .setDisplayName("上一页")
+                            .addLore("&7&o右键可前往第一页哦")
+                            .toItemStack()
+            );
+
+        }
+
     }
 
     public static class Messages {
 
-        public static ConfigValueList<String> SELECTED = new ConfigValueList<>("messages.selected", String.class);
-        public static ConfigValueList<String> EXPIRED = new ConfigValueList<>("messages.expired", String.class);
+        public static ConfigMessageList SELECTED = new ConfigMessageList("selected");
+        public static ConfigMessageList EXPIRED = new ConfigMessageList("expired");
 
-        public static ConfigValueList<String> RELOAD = new ConfigValueList<>("messages.reload", String.class);
-        public static ConfigValueList<String> HELP = new ConfigValueList<>("messages.help", String.class);
+        public static ConfigMessageList RELOAD = new ConfigMessageList("reload");
+        public static ConfigMessageList HELP = new ConfigMessageList("help");
 
-        public static ConfigValueList<String> LIST_TITLE = new ConfigValueList<>("messages.list-title", String.class);
-        public static ConfigValueList<String> LIST_VALUE = new ConfigValueList<>("messages.list-value", String.class);
+        public static ConfigMessageList LIST_TITLE = new ConfigMessageList("list-title");
+        public static ConfigMessageList LIST_VALUE = new ConfigMessageList("list-value");
     }
 
     public static class Sounds {

src/main/java/cc/carm/plugin/userprefix/configuration/file/FileConfig.java

@@ -0,0 +1,64 @@
+package cc.carm.plugin.userprefix.configuration.file;
+
+
+import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import java.io.File;
+import java.io.IOException;
+
+public class FileConfig {
+
+    private final JavaPlugin plugin;
+
+    private final String fileName;
+
+    private File file;
+    private FileConfiguration config;
+
+    public FileConfig(final JavaPlugin plugin) {
+        this(plugin, "config.yml");
+    }
+
+    public FileConfig(final JavaPlugin plugin, final String name) {
+        this.plugin = plugin;
+        this.fileName = name;
+        initFile();
+    }
+
+    private void initFile() {
+        this.file = new File(plugin.getDataFolder(), fileName);
+        if (!this.file.exists()) {
+            if (!this.file.getParentFile().exists()) {
+                this.file.getParentFile().mkdirs();
+            }
+            plugin.saveResource(fileName, true);
+        }
+        this.config = YamlConfiguration.loadConfiguration(this.file);
+    }
+
+    public File getFile() {
+        return file;
+    }
+
+    public FileConfiguration getConfig() {
+        return config;
+    }
+
+    public void save() {
+        try {
+            getConfig().save(getFile());
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void reload() {
+        if (getFile().exists()) {
+            this.config = YamlConfiguration.loadConfiguration(getFile());
+        } else {
+            initFile();
+        }
+    }
+}

src/main/java/cc/carm/plugin/userprefix/configuration/message/ConfigMessage.java

@@ -0,0 +1,32 @@
+package cc.carm.plugin.userprefix.configuration.message;
+
+import cc.carm.plugin.userprefix.configuration.values.ConfigValue;
+import cc.carm.plugin.userprefix.manager.ConfigManager;
+import cc.carm.plugin.userprefix.util.MessageUtil;
+import org.bukkit.command.CommandSender;
+
+import java.util.Arrays;
+
+public class ConfigMessage extends ConfigValue<String> {
+
+    public ConfigMessage(String configSection) {
+        this(configSection, null);
+    }
+
+    public ConfigMessage(String configSection, String defaultValue) {
+        super(ConfigManager.getMessageConfig(), configSection, String.class, defaultValue);
+    }
+
+    public void send(CommandSender sender) {
+        MessageUtil.send(sender, get());
+    }
+
+    public void sendWithPlaceholders(CommandSender sender) {
+        MessageUtil.sendWithPlaceholders(sender, get());
+    }
+
+    public void sendWithPlaceholders(CommandSender sender, String[] params, Object[] values) {
+        MessageUtil.sendWithPlaceholders(sender, Arrays.asList(get()), params, values);
+    }
+
+}

src/main/java/cc/carm/plugin/userprefix/configuration/message/ConfigMessageList.java

@@ -0,0 +1,29 @@
+package cc.carm.plugin.userprefix.configuration.message;
+
+import cc.carm.plugin.userprefix.configuration.values.ConfigValueList;
+import cc.carm.plugin.userprefix.manager.ConfigManager;
+import cc.carm.plugin.userprefix.util.MessageUtil;
+import org.bukkit.command.CommandSender;
+
+public class ConfigMessageList extends ConfigValueList<String> {
+
+    public ConfigMessageList(String configSection) {
+        super(ConfigManager.getMessageConfig(), configSection, String.class);
+    }
+
+    public ConfigMessageList(String configSection, String[] defaultValue) {
+        super(ConfigManager.getMessageConfig(), configSection, String.class, defaultValue);
+    }
+
+    public void send(CommandSender sender) {
+        MessageUtil.send(sender, get());
+    }
+
+    public void sendWithPlaceholders(CommandSender sender) {
+        MessageUtil.sendWithPlaceholders(sender, get());
+    }
+
+    public void sendWithPlaceholders(CommandSender sender, String[] params, Object[] values) {
+        MessageUtil.sendWithPlaceholders(sender, get(), params, values);
+    }
+}

src/main/java/cc/carm/plugin/userprefix/configuration/values/ConfigSound.java

@@ -1,13 +1,16 @@
 package cc.carm.plugin.userprefix.configuration.values;
 
 import cc.carm.plugin.userprefix.Main;
+import cc.carm.plugin.userprefix.configuration.file.FileConfig;
 import cc.carm.plugin.userprefix.manager.ConfigManager;
 import org.bukkit.Sound;
 import org.bukkit.configuration.file.FileConfiguration;
 import org.bukkit.entity.Player;
 
 public class ConfigSound {
-    FileConfiguration source;
+
+
+    FileConfig source;
     String configSection;
 
     Sound defaultValue;
@@ -17,18 +20,26 @@ public class ConfigSound {
     }
 
     public ConfigSound(String configSection, Sound defaultValue) {
-        this.source = ConfigManager.getConfig();
+        this(ConfigManager.getPluginConfig(), configSection, defaultValue);
+    }
+
+    public ConfigSound(FileConfig source, String configSection, Sound defaultValue) {
+        this.source = source;
         this.configSection = configSection;
         this.defaultValue = defaultValue;
     }
 
+    public FileConfiguration getConfiguration() {
+        return this.source.getConfig();
+    }
+
     public void set(Sound value, float volume) {
-        this.source.set(this.configSection, value.name() + ":" + volume);
+        getConfiguration().set(this.configSection, value.name() + ":" + volume);
         this.save();
     }
 
     public void set(Sound value, float volume, float pitch) {
-        this.source.set(this.configSection, value.name() + ":" + volume + ":" + pitch);
+        getConfiguration().set(this.configSection, value.name() + ":" + volume + ":" + pitch);
         this.save();
     }
 
@@ -36,7 +47,7 @@ public class ConfigSound {
         Sound finalSound = defaultValue;
         float pitch = 1;
         float volume = 1;
-        String soundString = this.source.getString(this.configSection);
+        String soundString = getConfiguration().getString(this.configSection);
         if (soundString != null) {
             String[] args = soundString.contains(":") ? soundString.split(":") : new String[]{soundString};
             try {
@@ -54,7 +65,7 @@ public class ConfigSound {
     }
 
     public void save() {
-        ConfigManager.saveConfig();
+        this.source.save();
     }
 
 }

src/main/java/cc/carm/plugin/userprefix/configuration/values/ConfigValue.java

@@ -1,10 +1,13 @@
 package cc.carm.plugin.userprefix.configuration.values;
 
+import cc.carm.plugin.userprefix.configuration.file.FileConfig;
 import cc.carm.plugin.userprefix.manager.ConfigManager;
 import org.bukkit.configuration.file.FileConfiguration;
 
 public class ConfigValue<V> {
-    FileConfiguration source;
+
+    FileConfig source;
+
     String configSection;
     Class<V> clazz;
     V defaultValue;
@@ -14,24 +17,32 @@ public class ConfigValue<V> {
     }
 
     public ConfigValue(String configSection, Class<V> clazz, V defaultValue) {
-        this.source = ConfigManager.getConfig();
+        this(ConfigManager.getPluginConfig(), configSection, clazz, defaultValue);
+    }
+
+    public ConfigValue(FileConfig source, String configSection, Class<V> clazz, V defaultValue) {
+        this.source = source;
         this.configSection = configSection;
         this.clazz = clazz;
         this.defaultValue = defaultValue;
     }
 
+    public FileConfiguration getConfiguration() {
+        return this.source.getConfig();
+    }
+
     public V get() {
-        Object val = this.source.get(this.configSection, this.defaultValue);
+        Object val = getConfiguration().get(this.configSection, this.defaultValue);
         return this.clazz.isInstance(val) ? this.clazz.cast(val) : this.defaultValue;
     }
 
     public void set(V value) {
-        this.source.set(this.configSection, value);
+        getConfiguration().set(this.configSection, value);
         this.save();
     }
 
     public void save() {
-        ConfigManager.saveConfig();
+        this.source.save();
     }
 
 }

src/main/java/cc/carm/plugin/userprefix/configuration/values/ConfigValueList.java

@@ -1,26 +1,52 @@
 package cc.carm.plugin.userprefix.configuration.values;
 
+import cc.carm.plugin.userprefix.configuration.file.FileConfig;
 import cc.carm.plugin.userprefix.manager.ConfigManager;
 import org.bukkit.configuration.file.FileConfiguration;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 public class ConfigValueList<V> {
-    FileConfiguration source;
+    FileConfig source;
     String configSection;
     Class<V> clazz;
 
+    V[] defaultValue;
+
     public ConfigValueList(String configSection, Class<V> clazz) {
-        this.source = ConfigManager.getConfig();
-        this.configSection = configSection;
-        this.clazz = clazz;
+        this(ConfigManager.getPluginConfig(), configSection, clazz);
     }
 
+    public ConfigValueList(String configSection, Class<V> clazz, V[] defaultValue) {
+        this(ConfigManager.getPluginConfig(), configSection, clazz, defaultValue);
+    }
+
+    public ConfigValueList(FileConfig configuration, String configSection, Class<V> clazz) {
+        this(configuration, configSection, clazz, null);
+    }
+
+    public ConfigValueList(FileConfig configuration, String configSection, Class<V> clazz, V[] defaultValue) {
+        this.source = configuration;
+        this.configSection = configSection;
+        this.clazz = clazz;
+        this.defaultValue = defaultValue;
+    }
+
+    public FileConfiguration getConfiguration() {
+        return this.source.getConfig();
+    }
+
+
     public ArrayList<V> get() {
-        List<?> list = this.source.getList(this.configSection);
+        List<?> list = getConfiguration().getList(this.configSection);
         if (list == null) {
-            return new ArrayList(0);
+            if (defaultValue != null) {
+                return new ArrayList<>(Arrays.asList(defaultValue));
+            } else {
+                return new ArrayList(0);
+            }
         } else {
             ArrayList<V> result = new ArrayList();
 
@@ -29,17 +55,17 @@ public class ConfigValueList<V> {
                     result.add(this.clazz.cast(object));
                 }
             }
-
             return result;
         }
     }
 
     public void set(ArrayList<V> value) {
-        this.source.set(this.configSection, value);
+        getConfiguration().set(this.configSection, value);
         this.save();
     }
 
     public void save() {
-        ConfigManager.saveConfig();
+        this.source.save();
     }
+
 }

src/main/java/cc/carm/plugin/userprefix/manager/ConfigManager.java

@@ -1,30 +1,47 @@
 package cc.carm.plugin.userprefix.manager;
 
 import cc.carm.plugin.userprefix.Main;
-import org.bukkit.configuration.file.FileConfiguration;
+import cc.carm.plugin.userprefix.configuration.file.FileConfig;
+
+import java.io.File;
 
 public class ConfigManager {
 
-    private static FileConfiguration config;
+    private static FileConfig config;
+    private static FileConfig messageConfig;
+
 
     public static void initConfig() {
-        Main.getInstance().saveDefaultConfig();
-        Main.getInstance().reloadConfig();
+        File configFile = new File(Main.getInstance().getDataFolder(), "config.yml");
+        if (!configFile.exists()) {
+            //没找到配置文件，可能是第一次加载此插件
+            //把一些英文版的东西复制出来，方便英文用户使用。
+            Main.getInstance().saveResource("prefixes/example-prefix.yml", false);
+            Main.getInstance().saveResource("en_US/config.yml", false);
+            Main.getInstance().saveResource("en_US/messages.yml", false);
+            Main.getInstance().saveResource("en_US/example-prefix.yml", false);
+        }
 
-        config = Main.getInstance().getConfig();
+        ConfigManager.config = new FileConfig(Main.getInstance(), "config.yml");
+        ConfigManager.messageConfig = new FileConfig(Main.getInstance(), "messages.yml");
     }
 
-    public static FileConfiguration getConfig() {
+    public static FileConfig getPluginConfig() {
         return config;
     }
 
-    public static void reloadConfig() {
-        Main.getInstance().reloadConfig();
-        config = Main.getInstance().getConfig();
+    public static FileConfig getMessageConfig() {
+        return messageConfig;
+    }
+
+    public static void reload() {
+        getPluginConfig().reload();
+        getMessageConfig().reload();
     }
 
     public static void saveConfig() {
-        Main.getInstance().saveConfig();
+        getPluginConfig().save();
+        getMessageConfig().save();
     }
 
 

src/main/java/cc/carm/plugin/userprefix/manager/PrefixManager.java

@@ -11,6 +11,8 @@ import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.io.File;
+import java.util.Arrays;
 import java.util.Comparator;
 import java.util.HashMap;
 import java.util.List;
@@ -21,45 +23,48 @@ public class PrefixManager {
     public static ConfiguredPrefix defaultPrefix;
     public static HashMap<String, ConfiguredPrefix> prefixes = new HashMap<>();
 
+    private static final String FOLDER_NAME = "prefixes";
 
     public static void init() {
-        loadConfiguredPrefixes();
+        loadPrefixes();
         Main.log("共加载了 " + prefixes.size() + " 个前缀。");
     }
 
-    public static void loadConfiguredPrefixes() {
+    public static void loadPrefixes() {
         loadDefaultPrefix();
+        loadConfiguredPrefixes();
+    }
 
-        ConfigurationSection prefixesSection = ConfigManager.getConfig().getConfigurationSection("prefixes");
-        if (prefixesSection == null || prefixesSection.getKeys(false).isEmpty()) {
+    public static void loadConfiguredPrefixes() {
+
+        File prefixDataFolder = new File(Main.getInstance().getDataFolder() + File.separator + FOLDER_NAME);
+        if (!prefixDataFolder.isDirectory() || !prefixDataFolder.exists()) {
+            prefixDataFolder.mkdir();
+        }
+
+        String[] filesList = prefixDataFolder.list();
+        if (filesList == null || filesList.length < 1) {
             Main.log("配置文件中暂无任何前缀配置，请检查。");
+            Main.log("There's no configured prefix.");
             return;
         }
+        List<File> files = Arrays.stream(filesList)
+                .map(s -> new File(prefixDataFolder, s))
+                .filter(File::isFile)
+                .collect(Collectors.toList());
 
         HashMap<String, ConfiguredPrefix> dataPrefixes = new HashMap<>();
 
-        for (String prefixIdentifier : prefixesSection.getKeys(false)) {
-            ConfigurationSection configuredPrefixSection = prefixesSection.getConfigurationSection(prefixIdentifier);
-            if (configuredPrefixSection == null) continue;
-            try {
-                String name = configuredPrefixSection.getString("name", "ERROR");
-                String content = configuredPrefixSection.getString("content", "&r");
-                String permission = configuredPrefixSection.getString("permission");
-                int weight = configuredPrefixSection.getInt("weight", 1);
-
-                ItemStack itemHasPermission = configuredPrefixSection.getItemStack("itemHasPermission",
-                        new ItemStackFactory(Material.STONE).setDisplayName(name).addLore(" ").addLore("§a➥ 点击切换到该前缀").toItemStack()
-                );
-                ItemStack itemNoPermission = configuredPrefixSection.getItemStack("itemNoPermission", itemHasPermission);
-                ItemStack itemUsing = configuredPrefixSection.getItemStack("itemUsing", itemHasPermission);
-
-
-                Main.log("完成前缀加载 " + prefixIdentifier + " : " + name);
-
-                dataPrefixes.put(prefixIdentifier, new ConfiguredPrefix(prefixIdentifier, name, content, weight, permission, itemHasPermission, itemNoPermission, itemUsing));
-            } catch (Exception exception) {
-                Main.log("Error occurred when loading prefix #" + prefixIdentifier + " !");
-                exception.printStackTrace();
+        if (files.size() > 0) {
+            for (File file : files) {
+                try {
+                    ConfiguredPrefix prefix = new ConfiguredPrefix(file);
+                    Main.log("完成前缀加载 " + prefix.getIdentifier() + " : " + prefix.getName());
+                    dataPrefixes.put(prefix.getIdentifier(), prefix);
+                } catch (Exception ex) {
+                    Main.log("Error occurred when loading prefix #" + file.getAbsolutePath() + " !");
+                    ex.printStackTrace();
+                }
             }
         }
 
@@ -69,7 +74,7 @@ public class PrefixManager {
 
     public static void loadDefaultPrefix() {
         PrefixManager.defaultPrefix = null;
-        ConfigurationSection defaultPrefixSection = ConfigManager.getConfig().getConfigurationSection("defaultPrefix");
+        ConfigurationSection defaultPrefixSection = ConfigManager.getPluginConfig().getConfig().getConfigurationSection("defaultPrefix");
         if (defaultPrefixSection != null) {
             try {
                 String name = defaultPrefixSection.getString("name", "默认前缀");

src/main/java/cc/carm/plugin/userprefix/model/ConfiguredPrefix.java

@@ -1,12 +1,23 @@
 package cc.carm.plugin.userprefix.model;
 
 import cc.carm.plugin.userprefix.util.ColorParser;
+import cc.carm.plugin.userprefix.util.ItemStackFactory;
+import org.bukkit.Material;
+import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.configuration.file.YamlConfiguration;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.io.File;
+
 public class ConfiguredPrefix {
 
+    @Nullable
+    private File dataFile;
+    @Nullable
+    private FileConfiguration configuration;
+
     String identifier;
 
     String name;
@@ -20,6 +31,25 @@ public class ConfiguredPrefix {
     ItemStack itemNoPermission;
     ItemStack itemWhenUsing;
 
+
+    public ConfiguredPrefix(@NotNull File dataFile) {
+        this.dataFile = dataFile;
+        this.configuration = YamlConfiguration.loadConfiguration(dataFile);
+        if (getConfiguration() != null) {
+            this.identifier = getConfiguration().getString("identifier", "ERROR");
+            this.name = getConfiguration().getString("name", "ERROR");
+            this.content = getConfiguration().getString("content", "&r");
+            this.permission = getConfiguration().getString("permission");
+            this.weight = getConfiguration().getInt("weight", 1);
+
+            this.itemHasPermission = (ItemStack) getConfiguration().get("itemHasPermission",
+                    new ItemStackFactory(Material.STONE).setDisplayName(name).addLore(" ").addLore("§a➥ 点击切换到该前缀").toItemStack()
+            );
+            this.itemNoPermission = (ItemStack) getConfiguration().get("itemNoPermission", itemHasPermission);
+            this.itemWhenUsing = (ItemStack) getConfiguration().get("itemUsing", itemHasPermission);
+        }
+    }
+
     public ConfiguredPrefix(@NotNull String identifier,
                             @NotNull String name,
                             @NotNull String content,
@@ -37,6 +67,11 @@ public class ConfiguredPrefix {
         this.itemWhenUsing = itemWhenUsing;
     }
 
+    @Nullable
+    public FileConfiguration getConfiguration() {
+        return configuration;
+    }
+
     @NotNull
     public String getIdentifier() {
         return identifier;

src/main/java/cc/carm/plugin/userprefix/util/gui/AutoPagedGUI.java

@@ -1,8 +1,6 @@
 package cc.carm.plugin.userprefix.util.gui;
 
 import cc.carm.plugin.userprefix.configuration.PrefixConfig;
-import cc.carm.plugin.userprefix.util.ItemStackFactory;
-import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.ClickType;
 import org.bukkit.inventory.ItemStack;
@@ -53,10 +51,7 @@ public class AutoPagedGUI extends CommonPagedGUI {
     public void openGUI(Player user) {
         if (previousPageSlot >= 0)
             if (hasPreviousPage()) {
-                setItem(previousPageSlot, new GUIItem(previousPageUI == null ? new ItemStackFactory(Material.ARROW)
-                        .setDisplayName("&f上一页")
-                        .addLore("&7&o右键可前往第一页哦")
-                        .toItemStack() : previousPageUI) {
+                setItem(previousPageSlot, new GUIItem(previousPageUI == null ? PrefixConfig.GUI.Items.PREVIOUS_PAGE.get() : previousPageUI) {
                     @Override
                     public void onClick(ClickType type) {
                         if (type == ClickType.RIGHT) {
@@ -70,12 +65,9 @@ public class AutoPagedGUI extends CommonPagedGUI {
                 });
             }
 
-        if (previousPageSlot >= 0)
+        if (nextPageSlot >= 0)
             if (hasNextPage()) {
-                setItem(nextPageSlot, new GUIItem(nextPageUI == null ? new ItemStackFactory(Material.ARROW)
-                        .setDisplayName("下一页")
-                        .addLore("&7&o右键可前往最后一页哦")
-                        .toItemStack() : nextPageUI) {
+                setItem(nextPageSlot, new GUIItem(nextPageUI == null ? PrefixConfig.GUI.Items.NEXT_PAGE.get() : nextPageUI) {
                     @Override
                     public void onClick(ClickType type) {
                         if (type == ClickType.RIGHT) {