diff --git a/Api/Utility/DataExtension.cs b/Api/Utility/DataExtension.cs
new file mode 100644
index 0000000..315ea96
--- /dev/null
+++ b/Api/Utility/DataExtension.cs
@@ -0,0 +1,35 @@
+namespace Milimoe.FunGame.Core.Api.Utility
+{
+    public static class DictionaryExtensions
+    {
+        /// <summary>
+        /// 从 <see cref="Dictionary{String, Object}"/> 中获取指定键的值，并将其转换为指定的类型。
+        /// </summary>
+        /// <typeparam name="T">要转换的目标类型</typeparam>
+        /// <param name="dict">要从中获取值的字典</param>
+        /// <param name="key">要获取值的键</param>
+        /// <returns>转换后的值，如果键不存在或转换失败，则返回默认值。</returns>
+        public static T? GetValue<T>(this Dictionary<string, object> dict, string key)
+        {
+            if (dict is null || !dict.TryGetValue(key, out object? value) || value is null)
+            {
+                return default;
+            }
+
+            try
+            {
+                // 如果已经是目标类型，则直接返回
+                if (value is T t)
+                {
+                    return t;
+                }
+
+                return NetworkUtility.JsonDeserializeFromDictionary<T>(dict, key);
+            }
+            catch (Exception)
+            {
+                return default;
+            }
+        }
+    }
+}
diff --git a/Api/Utility/General.cs b/Api/Utility/General.cs
index 5e0edb4..31d7897 100644
--- a/Api/Utility/General.cs
+++ b/Api/Utility/General.cs
@@ -491,24 +491,6 @@ namespace Milimoe.FunGame.Core.Api.Utility
         }
     }
 
-    /// <summary>
-    /// 为字符串（string）添加扩展方法
-    /// </summary>
-    public static class StringExtension
-    {
-        /// <summary>
-        /// 使用 HMAC-SHA512 算法对文本进行加密<para/>
-        /// 注意：此方法会先将 <paramref name="key" /> 转为小写并计算两次哈希。
-        /// </summary>
-        /// <param name="text">需要加密的文本</param>
-        /// <param name="key">用于加密的秘钥</param>
-        /// <returns>加密后的 HMAC-SHA512 哈希值</returns>
-        public static string Encrypt(this string text, string key)
-        {
-            return Encryption.HmacSha512(text, Encryption.HmacSha512(text, key.ToLower()));
-        }
-    }
-
     #endregion
 
     #region 验证服务
diff --git a/Api/Utility/StringExtension.cs b/Api/Utility/StringExtension.cs
new file mode 100644
index 0000000..6eeaac8
--- /dev/null
+++ b/Api/Utility/StringExtension.cs
@@ -0,0 +1,20 @@
+namespace Milimoe.FunGame.Core.Api.Utility
+{
+    /// <summary>
+    /// 为字符串（string）添加扩展方法
+    /// </summary>
+    public static class StringExtension
+    {
+        /// <summary>
+        /// 使用 HMAC-SHA512 算法对文本进行加密<para/>
+        /// 注意：此方法会先将 <paramref name="key" /> 转为小写并计算两次哈希。
+        /// </summary>
+        /// <param name="text">需要加密的文本</param>
+        /// <param name="key">用于加密的秘钥</param>
+        /// <returns>加密后的 HMAC-SHA512 哈希值</returns>
+        public static string Encrypt(this string text, string key)
+        {
+            return Encryption.HmacSha512(text, Encryption.HmacSha512(text, key.ToLower()));
+        }
+    }
+}