public class GsonTools {

    public GsonTools(){}

    public static <T> T getPerson(String jsonString,Class<T> cls){

        T t = null;

        try {

            Gson gson = new Gson();

            t = gson.fromJson(jsonString, cls);

        } catch (Exception e) {

            e.printStackTrace();

        }

        return t;

    }

    public static <T> List<T> getPersons(String jsonString,Class<T> cls){

        List<T> list = new ArrayList<T>();

        try {

            Gson gson = new Gson();

            list = gson.fromJson(jsonString, new TypeToken<List<T>>(){}.getType());

        } catch (Exception e) {

            e.printStackTrace();

        }

        return list;

    }

    public static List<String> getList(String jsonString){

        List<String> list = new ArrayList<String>();

        try {

            Gson gson = new Gson();

            list = gson.fromJson(jsonString, new TypeToken<List<String>>(){}.getType());

        } catch (Exception e) {

            e.printStackTrace();

        }

        return list;

    }

    public static List<Map<String, Object>> listKeyMaps(String jsonString){

        List<Map<String, Object>> list = new ArrayList<Map<String,Object>>();

        try {

            Gson gson = new Gson();

            list = gson.fromJson(jsonString, new TypeToken<List<Map<String, Object>>>(){}.getType());

        } catch (Exception e) {

            e.printStackTrace();

        }

        return list;

    }

}