Pass `JsonSerializerOptions` when serializing the `enum`.

framework/src/Volo.Abp.Json.SystemTextJson/Volo/Abp/Json/SystemTextJson/JsonConverters/AbpStringToEnumConverter.cs

@@ -11,6 +11,8 @@ public class AbpStringToEnumConverter<T> : JsonConverter<T>
 
     private JsonSerializerOptions? _readJsonSerializerOptions;
 
+    private JsonSerializerOptions? _writeJsonSerializerOptions;
+
     public AbpStringToEnumConverter()
         : this(namingPolicy: null, allowIntegerValues: true)
     {
@@ -39,7 +41,11 @@ public class AbpStringToEnumConverter<T> : JsonConverter<T>
 
     public override void Write(Utf8JsonWriter writer, T value, JsonSerializerOptions options)
     {
-        JsonSerializer.Serialize(writer, value);
+        _writeJsonSerializerOptions ??= JsonSerializerOptionsHelper.Create(options, x =>
+                x == this ||
+                x.GetType() == typeof(AbpStringToEnumFactory));
+
+        JsonSerializer.Serialize(writer, value, _writeJsonSerializerOptions);
     }
 
     public override T ReadAsPropertyName(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)

framework/test/Volo.Abp.Json.Tests/Volo/Abp/Json/AbpStringToEnum_Tests.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Text.Json;
+using System.Text.Json.Serialization;
 using Shouldly;
 using Volo.Abp.Json.SystemTextJson.JsonConverters;
 using Xunit;
@@ -53,10 +54,26 @@ public class AbpStringToEnum_Tests
         var testClassJson = JsonSerializer.Serialize(new TestClass()
         {
             Day = DayOfWeek.Monday
-        });
+        }, options);
 
         testClassJson.ShouldBe("{\"Day\":1}");
 
+        options = new JsonSerializerOptions()
+        {
+            Converters =
+            {
+                new AbpStringToEnumFactory(),
+                new JsonStringEnumConverter()
+            }
+        };
+
+        testClassJson = JsonSerializer.Serialize(new TestClass()
+        {
+            Day = DayOfWeek.Monday
+        }, options);
+
+        testClassJson.ShouldBe("{\"Day\":\"Monday\"}");
+
         testClassJson = JsonSerializer.Serialize(new Dictionary<DayOfWeek, string>
         {
             {DayOfWeek.Monday, "Mo"}