배열 타입 Json 읽어들이기 [Json Array To Unreal Engine [C++] ]

 

 

I have data endpoint which returns a json like [{"Name": "Alex", "Age": 24}]

now if i Deserialize this as an JsonObject It fails as it's an array with no name how can I get the data inside the array?

 

 

Here is an snippet from my code. Should help.

TSharedRef<TJsonReader<>> reader = TJsonReaderFactory<>::Create(data);

TArray< TSharedPtr<FJsonValue> > ue4ObjectArray;

successful = FJsonSerializer::Deserialize(reader, ue4ObjectArray);

 

 

TArray<TSharedPtr<FJsonValue>> objArray = JsonObject->GetArrayField(TEXT("AwesomeStructs"));

for (int32 i = 0; i < objArray.Num(); i++)
	{
		TSharedPtr<FJsonValue> value = objArray[i];
		TSharedPtr<FJsonObject> json = value->AsObject();

		FVector  AwesomeVector  = ParseAsVector(json, FString("AwesomeVector"));
		bool     AwesomeBoolean = json->GetBoolField(TEXT("AwesomeBoolean"));
		float    AwesomeFloat   = json->GetNumberField(TEXT("AwesomeFloat"));
		int32    AwesomeInteger = json->GetNumberField(TEXT("AwesomeInteger"));
		FRotator AwesomeRotator = ParseAsRotator(json, FString("AwesomeRotator"));
		
		FAwesomeStruct AwesomeStruct = FAwesomeStruct::BuildAwesomeStruct(
			AwesomeVector,AwesomeBoolean,AwesomeFloat,AwesomeInteger,AwesomeRotator
		);

		AwesomeStructs.Push(AwesomeStruct);
	}
}

 

 

Array 읽기

TArray<TSharedPtr<FJsonValue>> Array = JsonObject->GetArrayField(TEXT("FieldName"));

또는

const TArray<TSharedPtr<FJsonValue>>* Value;
if(JsonObject->TryGetArrayField(TEXT("FieldName"), Value)) {
	// When Parsing Success.
} else {
	// When Parsing Failed.
}

 

ref : https://ballbot.tistory.com/45

ref : https://www.reddit.com/r/unrealengine/comments/shpgbw/json_array_to_unreal_engine_c_or_varest/

ref : https://gist.github.com/hanzochang/07eba255ce0d1695582a92e98e973200