Localization: Skip virtual json files without culture code

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

@@ -2,6 +2,7 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Text.Json;
+using JetBrains.Annotations;
 using Microsoft.Extensions.Localization;
 
 namespace Volo.Abp.Localization.Json;
@@ -12,6 +13,7 @@ public static class JsonLocalizationDictionaryBuilder
     ///     Builds an <see cref="JsonLocalizationDictionaryBuilder" /> from given file.
     /// </summary>
     /// <param name="filePath">Path of the file</param>
+    [CanBeNull]
     public static ILocalizationDictionary BuildFromFile(string filePath)
     {
         try
@@ -36,24 +38,26 @@ public static class JsonLocalizationDictionaryBuilder
     ///     Builds an <see cref="JsonLocalizationDictionaryBuilder" /> from given json string.
     /// </summary>
     /// <param name="jsonString">Json string</param>
+    [CanBeNull]
     public static ILocalizationDictionary BuildFromJsonString(string jsonString)
     {
         JsonLocalizationFile jsonFile;
+        string cultureCode;
         try
         {
             jsonFile = JsonSerializer.Deserialize<JsonLocalizationFile>(jsonString, DeserializeOptions);
+            cultureCode = jsonFile.Culture;
+
+            if (string.IsNullOrEmpty(cultureCode))
+            {
+                return null;
+            }
         }
         catch (JsonException ex)
         {
             throw new AbpException("Can not parse json string. " + ex.Message);
         }
 
-        var cultureCode = jsonFile.Culture;
-        if (string.IsNullOrEmpty(cultureCode))
-        {
-            throw new AbpException("Culture is empty in language json file.");
-        }
-
         var dictionary = new Dictionary<string, LocalizedString>();
         var dublicateNames = new List<string>();
         foreach (var item in jsonFile.Texts)

framework/src/Volo.Abp.Localization/Volo/Abp/Localization/VirtualFiles/VirtualFileLocalizationResourceContributorBase.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
+using JetBrains.Annotations;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.FileProviders;
 using Microsoft.Extensions.Localization;
@@ -98,6 +99,12 @@ public abstract class VirtualFileLocalizationResourceContributorBase : ILocaliza
             }
 
             var dictionary = CreateDictionaryFromFile(file);
+
+            if (dictionary == null)
+            {
+                continue;
+            }
+            
             if (dictionaries.ContainsKey(dictionary.CultureName))
             {
                 throw new AbpException($"{file.GetVirtualOrPhysicalPathOrNull()} dictionary has a culture name '{dictionary.CultureName}' which is already defined! Localization resource: {_resource.ResourceName}");
@@ -111,6 +118,7 @@ public abstract class VirtualFileLocalizationResourceContributorBase : ILocaliza
 
     protected abstract bool CanParseFile(IFileInfo file);
 
+    [CanBeNull]
     protected virtual ILocalizationDictionary CreateDictionaryFromFile(IFileInfo file)
     {
         using (var stream = file.CreateReadStream())
@@ -119,5 +127,6 @@ public abstract class VirtualFileLocalizationResourceContributorBase : ILocaliza
         }
     }
 
+    [CanBeNull] 
     protected abstract ILocalizationDictionary CreateDictionaryFromFileContent(string fileContent);
 }