Java JSON:获取没有引号的object-value？

import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

public class JsonParserExample {
    public static void main(String[] args) {
        String jsonString = "{\"name\": \"John\", \"age\": 30}";

        JsonParser parser = new JsonParser();
        JsonElement element = parser.parse(jsonString);
        JsonObject jsonObject = element.getAsJsonObject();

        String name = jsonObject.get("name").getAsString();
        int age = jsonObject.get("age").getAsInt();

        System.out.println("Name: " + name);
        System.out.println("Age: " + age);
    }
}