diff --git a/hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/HamsterCorePlugin.java b/hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/HamsterCorePlugin.java
index 67ffe41..c17c7a8 100644
--- a/hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/HamsterCorePlugin.java
+++ b/hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/HamsterCorePlugin.java
@@ -9,11 +9,15 @@ import cn.hamster3.mc.plugin.core.bukkit.hook.VaultAPI;
 import cn.hamster3.mc.plugin.core.bukkit.listener.CallbackListener;
 import cn.hamster3.mc.plugin.core.bukkit.listener.DebugListener;
 import cn.hamster3.mc.plugin.core.bukkit.page.listener.PageListener;
+import cn.hamster3.mc.plugin.core.bukkit.util.BukkitSerializeUtils;
 import cn.hamster3.mc.plugin.core.common.constant.CoreConstantObjects;
+import com.google.gson.*;
 import net.kyori.adventure.platform.bukkit.BukkitAudiences;
 import org.bukkit.Bukkit;
+import org.bukkit.inventory.ItemStack;
 import org.bukkit.plugin.java.JavaPlugin;
 
+import java.lang.reflect.Type;
 import java.util.logging.Logger;
 
 public class HamsterCorePlugin extends JavaPlugin {
@@ -38,6 +42,9 @@ public class HamsterCorePlugin extends JavaPlugin {
         saveDefaultConfig();
         reloadConfig();
         logger.info("已读取配置文件.");
+        CoreConstantObjects.GSON = CoreConstantObjects.GSON.newBuilder()
+                .registerTypeAdapter(ItemStack.class, ItemStackAdapter.INSTANCE)
+                .create();
         CoreBukkitAPI.init();
         logger.info("已初始化 CoreBukkitAPI.");
         CoreMessage.init(this);
@@ -86,3 +93,27 @@ public class HamsterCorePlugin extends JavaPlugin {
         return audienceProvider;
     }
 }
+
+class ItemStackAdapter implements JsonSerializer<ItemStack>, JsonDeserializer<ItemStack> {
+    public static final ItemStackAdapter INSTANCE = new ItemStackAdapter();
+
+    private ItemStackAdapter() {
+    }
+
+    @Override
+    public ItemStack deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
+        if (json.isJsonNull()) {
+            return null;
+        }
+        return BukkitSerializeUtils.deserializeItemStack(json.getAsString());
+    }
+
+    @Override
+    public JsonElement serialize(ItemStack src, Type typeOfSrc, JsonSerializationContext context) {
+        String s = BukkitSerializeUtils.serializeItemStack(src);
+        if (s == null) {
+            return JsonNull.INSTANCE;
+        }
+        return new JsonPrimitive(s);
+    }
+}
\ No newline at end of file
diff --git a/hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/page/ButtonGroup.java b/hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/page/ButtonGroup.java
index 6541a73..975e204 100644
--- a/hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/page/ButtonGroup.java
+++ b/hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/page/ButtonGroup.java
@@ -169,8 +169,7 @@ public class ButtonGroup {
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;
-        if (!(o instanceof ButtonGroup)) return false;
-        ButtonGroup that = (ButtonGroup) o;
+        if (!(o instanceof ButtonGroup that)) return false;
         return name.equals(that.name);
     }
 
diff --git a/hamster-core-common/src/main/java/cn/hamster3/mc/plugin/core/common/constant/CoreConstantObjects.java b/hamster-core-common/src/main/java/cn/hamster3/mc/plugin/core/common/constant/CoreConstantObjects.java
index a94ae8f..a978d0f 100644
--- a/hamster-core-common/src/main/java/cn/hamster3/mc/plugin/core/common/constant/CoreConstantObjects.java
+++ b/hamster-core-common/src/main/java/cn/hamster3/mc/plugin/core/common/constant/CoreConstantObjects.java
@@ -5,45 +5,36 @@ import com.google.gson.*;
 import org.jetbrains.annotations.NotNull;
 
 import java.lang.reflect.Type;
-import java.util.UUID;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.ThreadFactory;
 
 @SuppressWarnings("unused")
-public interface CoreConstantObjects {
+public abstract class CoreConstantObjects {
     /**
-     * Minecraft 默认指定的空 UUID
+     * 异步线程
      */
-    UUID NIL_UUID = new UUID(0L, 0L);
-
+    public static final ExecutorService WORKER_EXECUTOR = Executors.newCachedThreadPool(new NamedThreadFactory("HamsterCore - Executor"));
+    /**
+     * 调度器线程
+     */
+    public static final ScheduledExecutorService SCHEDULED_EXECUTOR = Executors
+            .newScheduledThreadPool(1, new NamedThreadFactory("HamsterCore - Scheduler"));
     /**
      * GSON 工具
      */
-    Gson GSON = new GsonBuilder()
+    public static Gson GSON = new GsonBuilder()
             .registerTypeAdapter(DisplayMessage.class, MessageTypeAdapter.INSTANCE)
             .create();
-
     /**
      * GSON 工具，会使用格式化输出、且解析中包含null参数
      */
-    Gson GSON_HUMAN = new GsonBuilder()
+    public static Gson GSON_HUMAN = new GsonBuilder()
             .registerTypeAdapter(DisplayMessage.class, MessageTypeAdapter.INSTANCE)
             .serializeNulls()
             .setPrettyPrinting()
             .create();
-
-    /**
-     * 异步线程
-     */
-    ExecutorService WORKER_EXECUTOR = Executors.newCachedThreadPool(new NamedThreadFactory("HamsterCore - Executor"));
-    /**
-     * 调度器线程
-     */
-    ScheduledExecutorService SCHEDULED_EXECUTOR = Executors
-            .newScheduledThreadPool(1, new NamedThreadFactory("HamsterCore - Scheduler"));
-
 }
 
 class NamedThreadFactory implements ThreadFactory {