Revised AbpJsonOptions.

framework/src/Volo.Abp.Json/Volo/Abp/Json/AbpJsonOptions.cs

@@ -1,9 +1,10 @@
-using Newtonsoft.Json;
-
-namespace Volo.Abp.Json
+namespace Volo.Abp.Json
 {
     public class AbpJsonOptions
     {
-        public JsonSerializerSettings SerializerSettings { get; } = new JsonSerializerSettings();
+        /// <summary>
+        /// Used to set default value for the DateTimeFormat.
+        /// </summary>
+        public string DefaultDateTimeFormat { get; set; }
     }
 }

framework/src/Volo.Abp.Json/Volo/Abp/Json/Newtonsoft/AbpJsonIsoDateTimeConverter.cs

@@ -14,7 +14,11 @@ namespace Volo.Abp.Json.Newtonsoft
         public AbpJsonIsoDateTimeConverter(IClock clock, IOptions<AbpJsonOptions> abpJsonOptions)
         {
             _clock = clock;
-            DateTimeFormat = abpJsonOptions.Value.SerializerSettings.DateFormatString;
+
+            if (abpJsonOptions.Value.DefaultDateTimeFormat != null)
+            {
+                DateTimeFormat = abpJsonOptions.Value.DefaultDateTimeFormat;
+            }
         }
 
         public override bool CanConvert(Type objectType)

framework/src/Volo.Abp.Json/Volo/Abp/Json/Newtonsoft/NewtonsoftJsonSerializer.cs

@@ -1,5 +1,4 @@
 using System;
-using Microsoft.Extensions.Options;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Serialization;
 using Volo.Abp.DependencyInjection;
@@ -9,12 +8,10 @@ namespace Volo.Abp.Json.Newtonsoft
     public class NewtonsoftJsonSerializer : IJsonSerializer, ITransientDependency
     {
         private readonly AbpJsonIsoDateTimeConverter _dateTimeConverter;
-        private readonly AbpJsonOptions _abpJsonOptions;
 
-        public NewtonsoftJsonSerializer(AbpJsonIsoDateTimeConverter dateTimeConverter, IOptions<AbpJsonOptions> abpJsonOptions)
+        public NewtonsoftJsonSerializer(AbpJsonIsoDateTimeConverter dateTimeConverter)
         {
             _dateTimeConverter = dateTimeConverter;
-            _abpJsonOptions = abpJsonOptions.Value;
         }
 
         public string Serialize(object obj, bool camelCase = true, bool indented = false)
@@ -34,7 +31,7 @@ namespace Volo.Abp.Json.Newtonsoft
 
         protected virtual JsonSerializerSettings CreateSerializerSettings(bool camelCase = true, bool indented = false)
         {
-            var settings = _abpJsonOptions.SerializerSettings;
+            var settings = new JsonSerializerSettings();
 
             settings.Converters.Insert(0, _dateTimeConverter);
             

framework/test/Volo.Abp.AspNetCore.Mvc.Tests/Volo/Abp/AspNetCore/Mvc/Json/JsonResultController_Tests.cs

@@ -13,7 +13,7 @@ namespace Volo.Abp.AspNetCore.Mvc.Json
         {
             services.Configure<AbpJsonOptions>(options =>
             {
-                options.SerializerSettings.DateFormatString = "yyyy*MM*dd";
+                options.DefaultDateTimeFormat = "yyyy*MM*dd";
             });
 
             base.ConfigureServices(context, services);

framework/test/Volo.Abp.AspNetCore.Mvc.Tests/Volo/Abp/AspNetCore/Mvc/Json/JsonSerializer_Tests.cs

@@ -20,7 +20,7 @@ namespace Volo.Abp.AspNetCore.Mvc.Json
         {
             services.Configure<AbpJsonOptions>(options =>
             {
-                options.SerializerSettings.DateFormatString = "yyyy*MM*dd";
+                options.DefaultDateTimeFormat = "yyyy*MM*dd";
             });
 
             base.ConfigureServices(context, services);