UE DataTable 与 JSON：先验证，再替换

Json导入导出DataTable

Json文件夹导入DataTable

	DataTable->EmptyTable();
    TArray<FString> JsonFiles;
    IFileManager::Get().FindFilesRecursive(JsonFiles, *JsonFolderPath, TEXT("*.json"), true, false, true);
    for(const auto JsonFilePath : JsonFiles)
    {
        FString JsonFileString;
        FFileHelper::LoadFileToString(JsonFileString, *JsonFilePath);
        const TSharedRef<TJsonReader<>> JsonReader = TJsonReaderFactory<>::Create(JsonFileString);
        TSharedPtr<FJsonObject> JsonObject;
        FJsonSerializer::Deserialize(JsonReader, JsonObject);
        if(JsonObject.IsValid() == false)
        {
            UE_LOG(DataTableDynamicSync, Error, TEXT("Failed to read file %s, please check if the Json object is correct"), *JsonFilePath);
            continue;	
        }
        void* RowData = FMemory::Malloc(DataTable->GetRowStruct()->GetStructureSize());
        FJsonObjectConverter::JsonObjectToUStruct(JsonObject.ToSharedRef(), DataTable->GetRowStruct(), RowData);	
        DataTable->AddRow(FName(JsonFilePath.RightChop(JsonFolderPath.Len()).LeftChop(5)), *static_cast<FTableRowBase*>(RowData));
    }
#if WITH_EDITOR
    DataTable->Modify(true);
#endif
    return true;

这是完全规避编辑器的写法，可以正常打包使用

DataTable导出到文件夹

IFileManager::Get().DeleteDirectory(*JsonFolderPath, true, true);
for(auto const& It : DataTable->GetRowMap())
{
    FString JsonFileString;
    FJsonObjectConverter::UStructToJsonObjectString(DataTable->GetRowStruct(), It.Value, JsonFileString);
    FFileHelper::SaveStringToFile(JsonFileString, *(JsonFolderPath + It.Key.ToString() + TEXT(".json")));	
}
return true

同样是完全规避了编辑器，可以正常打包使用