Reuse shared JsonSerializerSettings instead of shared ContractResolver.

framework/src/Volo.Abp.Auditing/Volo/Abp/Auditing/JsonNetAuditSerializer.cs

@@ -1,5 +1,3 @@
-using System;
-using System.Collections.Generic;
 using Microsoft.Extensions.Options;
 using Newtonsoft.Json;
 using Volo.Abp.DependencyInjection;
@@ -18,31 +16,29 @@ namespace Volo.Abp.Auditing
 
         public string Serialize(object obj)
         {
-            var options = new JsonSerializerSettings
-            {
-                ContractResolver = GetSharedAuditingContractResolver(Options.IgnoredTypes)
-            };
-
-            return JsonConvert.SerializeObject(obj, options);
+            return JsonConvert.SerializeObject(obj, GetSharedJsonSerializerSettings());
         }
 
         private static readonly object SyncObj = new object();
-        private static AuditingContractResolver _sharedAuditingContractResolver;
+        private static JsonSerializerSettings _sharedJsonSerializerSettings;
 
-        public static AuditingContractResolver GetSharedAuditingContractResolver(List<Type> ignoredTypes)
+        private JsonSerializerSettings GetSharedJsonSerializerSettings()
         {
-            if (_sharedAuditingContractResolver == null)
+            if (_sharedJsonSerializerSettings == null)
             {
                 lock (SyncObj)
                 {
-                    if (_sharedAuditingContractResolver == null)
+                    if (_sharedJsonSerializerSettings == null)
                     {
-                        _sharedAuditingContractResolver = new AuditingContractResolver(ignoredTypes);
+                        _sharedJsonSerializerSettings = new JsonSerializerSettings
+                        {
+                            ContractResolver = new AuditingContractResolver(Options.IgnoredTypes)
+                        };
                     }
                 }
             }
 
-            return _sharedAuditingContractResolver;
+            return _sharedJsonSerializerSettings;
         }
     }
 }

framework/src/Volo.Abp.Http.Client/Volo/Abp/Http/Client/DynamicProxying/ApiDescriptionFinder.cs

@@ -18,9 +18,6 @@ namespace Volo.Abp.Http.Client.DynamicProxying
 
         protected IApiDescriptionCache Cache { get; }
 
-        private static readonly CamelCasePropertyNamesContractResolver SharedCamelCasePropertyNamesContractResolver =
-            new CamelCasePropertyNamesContractResolver();
-
         public ApiDescriptionFinder(
             IApiDescriptionCache cache, 
             IDynamicProxyHttpClientFactory httpClientFactory)
@@ -97,14 +94,32 @@ namespace Volo.Abp.Http.Client.DynamicProxying
 
                 var result = JsonConvert.DeserializeObject(
                     content,
-                    typeof(ApplicationApiDescriptionModel),
-                    new JsonSerializerSettings
-                    {
-                        ContractResolver = SharedCamelCasePropertyNamesContractResolver
-                    });
+                    typeof(ApplicationApiDescriptionModel), GetSharedJsonSerializerSettings());
 
                 return (ApplicationApiDescriptionModel)result;
             }
         }
+
+        private static readonly object SyncObj = new object();
+        private static JsonSerializerSettings _sharedJsonSerializerSettings;
+
+        private static JsonSerializerSettings GetSharedJsonSerializerSettings()
+        {
+            if (_sharedJsonSerializerSettings == null)
+            {
+                lock (SyncObj)
+                {
+                    if (_sharedJsonSerializerSettings == null)
+                    {
+                        _sharedJsonSerializerSettings = new JsonSerializerSettings
+                        {
+                            ContractResolver = new CamelCasePropertyNamesContractResolver()
+                        };
+                    }
+                }
+            }
+
+            return _sharedJsonSerializerSettings;
+        }
     }
 }

framework/src/Volo.Abp.Localization/Volo/Abp/Localization/Json/JsonLocalizationDictionaryBuilder.cs

@@ -9,8 +9,10 @@ namespace Volo.Abp.Localization.Json
 {
     public static class JsonLocalizationDictionaryBuilder
     {
-        private static readonly CamelCasePropertyNamesContractResolver SharedCamelCasePropertyNamesContractResolver =
-            new CamelCasePropertyNamesContractResolver();
+        private static readonly JsonSerializerSettings SharedJsonSerializerSettings = new JsonSerializerSettings
+        {
+            ContractResolver = new CamelCasePropertyNamesContractResolver()
+        };
 
         /// <summary>
         ///     Builds an <see cref="JsonLocalizationDictionaryBuilder" /> from given file.
@@ -38,11 +40,7 @@ namespace Volo.Abp.Localization.Json
             try
             {
                 jsonFile = JsonConvert.DeserializeObject<JsonLocalizationFile>(
-                    jsonString,
-                    new JsonSerializerSettings
-                    {
-                        ContractResolver = SharedCamelCasePropertyNamesContractResolver
-                    });
+                    jsonString, SharedJsonSerializerSettings);
             }
             catch (JsonException ex)
             {

framework/test/Volo.Abp.AspNetCore.Tests/Volo/Abp/AspNetCore/AbpAspNetCoreTestBase.cs

@@ -11,16 +11,16 @@ namespace Volo.Abp.AspNetCore
     public abstract class AbpAspNetCoreTestBase<TStartup> : AbpAspNetCoreIntegratedTestBase<TStartup>
         where TStartup : class
     {
-        private static readonly CamelCasePropertyNamesContractResolver SharedCamelCasePropertyNamesContractResolver =
-            new CamelCasePropertyNamesContractResolver();
+        private static readonly JsonSerializerSettings SharedJsonSerializerSettings =
+            new JsonSerializerSettings
+            {
+                ContractResolver = new CamelCasePropertyNamesContractResolver()
+            };
 
         protected virtual async Task<T> GetResponseAsObjectAsync<T>(string url, HttpStatusCode expectedStatusCode = HttpStatusCode.OK)
         {
             var strResponse = await GetResponseAsStringAsync(url, expectedStatusCode);
-            return JsonConvert.DeserializeObject<T>(strResponse, new JsonSerializerSettings
-            {
-                ContractResolver = SharedCamelCasePropertyNamesContractResolver
-            });
+            return JsonConvert.DeserializeObject<T>(strResponse, SharedJsonSerializerSettings);
         }
 
         protected virtual async Task<string> GetResponseAsStringAsync(string url, HttpStatusCode expectedStatusCode = HttpStatusCode.OK)