Gson无法反序列化，因为使用了可观察列表

import com.google.gson.*;
import javafx.collections.ObservableList;

import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;

public class ObservableListAdapter implements JsonSerializer<ObservableList<?>>, JsonDeserializer<ObservableList<?>> {

    @Override
    public JsonElement serialize(ObservableList<?> src, Type typeOfSrc, JsonSerializationContext context) {
        List<?> list = new ArrayList<>(src);
        return context.serialize(list);
    }

    @Override
    public ObservableList<?> deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
        List<?> list = context.deserialize(json, List.class);
        return FXCollections.observableArrayList(list);
    }
}

Gson gson = new GsonBuilder()
        .registerTypeAdapter(ObservableList.class, new ObservableListAdapter())
        .create();