<fix> 将一个对象序列化成json文本

src/Extensions/ObjectExtensions.cs

@@ -15,7 +15,19 @@ public static class ObjectExtensions
     /// <returns>json文本</returns>
     public static string Json(this object me, bool format = false)
     {
-        return JsonSerializer.Serialize(
-            me, new JsonSerializerOptions { WriteIndented = format, PropertyNamingPolicy = JsonNamingPolicy.CamelCase });
+        var defaultOptions = default(JsonSerializerOptions).NewJsonSerializerOptions();
+        defaultOptions.WriteIndented = format;
+        return Json(me, defaultOptions);
+    }
+
+    /// <summary>
+    ///     将一个对象序列化成json文本
+    /// </summary>
+    /// <param name="me">指定对象</param>
+    /// <param name="options">序列化选项</param>
+    /// <returns>json文本</returns>
+    public static string Json(this object me, JsonSerializerOptions options)
+    {
+        return JsonSerializer.Serialize(me, options);
     }
 }