From d13f7a4db6859b42116e346e479c96ca2e859419 Mon Sep 17 00:00:00 2001
From: DHR60 <dehongren60@gmail.com>
Date: Wed, 6 May 2026 07:36:26 +0000
Subject: [PATCH] Fix json compact (#9246)

---
 v2rayN/ServiceLib/Common/JsonUtils.cs | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/v2rayN/ServiceLib/Common/JsonUtils.cs b/v2rayN/ServiceLib/Common/JsonUtils.cs
index 7e2b7f78..951cdbd7 100644
--- a/v2rayN/ServiceLib/Common/JsonUtils.cs
+++ b/v2rayN/ServiceLib/Common/JsonUtils.cs
@@ -17,6 +17,13 @@ public class JsonUtils
         Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
     };
 
+    private static readonly JsonSerializerOptions _defaultSerializeNoIndentedOptions = new()
+    {
+        WriteIndented = false,
+        DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
+        Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
+    };
+
     private static readonly JsonSerializerOptions _nullValueSerializeOptions = new()
     {
         WriteIndented = true,
@@ -24,6 +31,13 @@ public class JsonUtils
         Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
     };
 
+    private static readonly JsonSerializerOptions _nullValueSerializeNoIndentedOptions = new()
+    {
+        WriteIndented = false,
+        DefaultIgnoreCondition = JsonIgnoreCondition.Never,
+        Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
+    };
+
     private static readonly JsonDocumentOptions _defaultDocumentOptions = new()
     {
         CommentHandling = JsonCommentHandling.Skip
@@ -104,7 +118,13 @@ public class JsonUtils
             {
                 return result;
             }
-            var options = nullValue ? _nullValueSerializeOptions : _defaultSerializeOptions;
+            var options = (nullValue, indented) switch
+            {
+                (true, true) => _nullValueSerializeOptions,
+                (true, false) => _nullValueSerializeNoIndentedOptions,
+                (false, true) => _defaultSerializeOptions,
+                _ => _defaultSerializeNoIndentedOptions
+            };
             result = JsonSerializer.Serialize(obj, options);
         }
         catch (Exception ex)