UE4 Josn-蒲公英云

UE4 Josn

三种形式的json文件

1、

[
    "6L42J5RVAVZNOPTUKE888888",
    "6L4JOEZVAVQE6PTULQ888888"
]
TMap<FString, TSharedPtr<FJsonValue>> InstanceNameWithJsonValue;
    if (FPaths::FileExists(ArchiMeta))
    {
        FString JsonString;
        if (FFileHelper::LoadFileToString(JsonString, *ArchiMeta))
        {
            TArray<TSharedPtr<FJsonValue>> JsonObjects;
            TSharedRef<TJsonReader<>> Reader = TJsonReaderFactory<>::Create(JsonString);
            if (FJsonSerializer::Deserialize(Reader, JsonObjects))
            {
                for (auto JsonObject : JsonObjects)
                {
                    float CurrPolygonOffset = 0;
                    FString Group = JsonObject->AsString()
                }
            }
        }
    }

2、

[
    {
        "group": "MA2OKDNMDEDXCAABAAAAABI8_beam_mesh_143124_0",
        "category": "finishing",
        "type": "beam",
        "storey": 1,
        "roomID": "NULL",
        "species": "NULL"
    },
    {
        "group": "MA2OKDNMDEDXCAABAAAAABI8_beam_mesh_143138_0",
        "category": "finishing",
        "type": "beam",
        "storey": 1,
        "roomID": "NULL",
        "species": "NULL"
    }
]
TMap<FString, TSharedPtr<FJsonValue>> InstanceNameWithJsonValue;
    if (FPaths::FileExists(ArchiMeta))
    {
        FString JsonString;
        if (FFileHelper::LoadFileToString(JsonString, *ArchiMeta))
        {
            TArray<TSharedPtr<FJsonValue>> JsonObjects;
            TSharedRef<TJsonReader<>> Reader = TJsonReaderFactory<>::Create(JsonString);
            if (FJsonSerializer::Deserialize(Reader, JsonObjects))
            {
                for (auto JsonObject : JsonObjects)
                {
                    float CurrPolygonOffset = 0;
                    FString Group = JsonObject->AsObject()->GetStringField("group");
                    FString AssetName;
                    FString Component;
                    bool HasComponent = JsonObject->AsObject()->TryGetStringField("component", Component);
                    if (HasComponent)
                    {
                        AssetName = Component;
                    }
                    else
                    {
                        AssetName = Group;// AvatarString(Group);
                    }
                    InstanceNameWithJsonValue.Emplace(AssetName, JsonObject);
                }
            }
        }
    }

3、

{
    "fp": "c-007",
    "mesh_id": "6CF2J3ETDD522EK6KE888888"
}
TSharedPtr<FJsonObject> MeshStatusJsonObject;
    FString JsonString1;
    if (FFileHelper::LoadFileToString(JsonString1, *FurnitureMeta))
    {
        TSharedRef<TJsonReader<>> Reader = TJsonReaderFactory<>::Create(JsonString1);
        if (FJsonSerializer::Deserialize(Reader, MeshStatusJsonObject))
        {
            //do nothing
        }
    }

已经是JsonObject，可以直接使用了。

if (FPaths::FileExists(filename))
        {
            FString JsonString;
            if (FFileHelper::LoadFileToString(JsonString, *filename))
            {
                TSharedPtr<FJsonObject> JsonObject;
                TSharedRef<TJsonReader<>> Reader = TJsonReaderFactory<>::Create(JsonString);
                if (FJsonSerializer::Deserialize(Reader, JsonObject))
                {
                    TMap<FString, TSharedPtr<FJsonValue>> KeyValue = JsonObject->Values;
                    for (auto It = KeyValue.CreateConstIterator(); It; ++It)
                    {
                        //FString Key = *It.Key();
                        FString Key = It->Key;
                        UE_LOG(LogImportMat, Display, TEXT("key:%s"),*Key);
                        FString Value = (*It->Value).AsString();
                        UE_LOG(LogImportMat, Display, TEXT("value:%s"),*Value);
                        FString Value1 = (*KeyValue.Find(Key))->AsString();
                        UE_LOG(LogImportMat, Display, TEXT("value:%s"),*Value1);
                        break;
                        //CurrImportData = NewObject<UAutomatedAssetImportData>(this);
                    }
                }
            }
        }