From 86eb8297ddcb77c17c98806a0051b91eb0d86fc9 Mon Sep 17 00:00:00 2001
From: 2dust <31833384+2dust@users.noreply.github.com>
Date: Wed, 29 Oct 2025 20:20:44 +0800
Subject: [PATCH] Update JsonUtils.cs

---
 v2rayN/ServiceLib/Common/JsonUtils.cs | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/v2rayN/ServiceLib/Common/JsonUtils.cs b/v2rayN/ServiceLib/Common/JsonUtils.cs
index b5bcc7fe..7e2b7f78 100644
--- a/v2rayN/ServiceLib/Common/JsonUtils.cs
+++ b/v2rayN/ServiceLib/Common/JsonUtils.cs
@@ -35,9 +35,13 @@ public class JsonUtils
     /// <typeparam name="T"></typeparam>
     /// <param name="obj"></param>
     /// <returns></returns>
-    public static T DeepCopy<T>(T obj)
+    public static T? DeepCopy<T>(T? obj)
     {
-        return Deserialize<T>(Serialize(obj, false))!;
+        if (obj is null)
+        {
+            return default;
+        }
+        return Deserialize<T>(Serialize(obj, false));
     }
 
     /// <summary>
@@ -67,7 +71,7 @@ public class JsonUtils
     /// </summary>
     /// <param name="strJson"></param>
     /// <returns></returns>
-    public static JsonNode? ParseJson(string strJson)
+    public static JsonNode? ParseJson(string? strJson)
     {
         try
         {
@@ -116,7 +120,7 @@ public class JsonUtils
     /// <param name="obj"></param>
     /// <param name="options"></param>
     /// <returns></returns>
-    public static string Serialize(object? obj, JsonSerializerOptions options)
+    public static string Serialize(object? obj, JsonSerializerOptions? options)
     {
         var result = string.Empty;
         try
@@ -125,7 +129,7 @@ public class JsonUtils
             {
                 return result;
             }
-            result = JsonSerializer.Serialize(obj, options);
+            result = JsonSerializer.Serialize(obj, options ?? _defaultSerializeOptions);
         }
         catch (Exception ex)
         {