先记录：
格式一：数组嵌套
实现
1 FString GenerateJson(const FString Msg)
2 {
3 TSharedPtr<FJsonObject> RootJsonObj = MakeShareable<FJsonObject>(new FJsonObject);
4 RootJsonObj->SetStringField(TEXT("prompt"), Msg);
5
6 TArray<TSharedPtr<FJsonValue>> HistoryJson;
7 {
8 TSharedPtr<FJsonObject> TempObj = MakeShareable(new FJsonObject());
9 for (auto Value : PromptHistory)
10 {
11 TArray<TSharedPtr<FJsonValue>> TempJson;
TempJson.Add(MakeShareable(new FJsonValueString(Value.Prompt)));
TempJson.Add(MakeShareable(new FJsonValueString(Value.Response)));
13 HistoryJson.Add(MakeShareable(new FJsonValueArray(TempJson)));
14 }
15
16 }
17 RootJsonObj->SetArrayField(TEXT("history"), HistoryJson);
18
19 FString JsonStr;
20 TSharedRef<TJsonWriter<>> Writer = TJsonWriterFactory<>::Create(&JsonStr);
21 FJsonSerializer::Serialize(RootJsonObj.ToSharedRef(), Writer);
22
23 UE_LOG(LogTemp, Error, TEXT("---------%s"), *JsonStr);
24
25 return JsonStr;
26 }
格式二：
标签：JsonStr,MakeShareable,TEXT,构造,Json,RootJsonObj,new,TempJson,UE4 From： https://www.cnblogs.com/-sev-/p/17350385.html