json string 与bean的list 互转

jsonstring 转 list

Gson gson = new Gson();
List<VABean>

 list = gson.fromJson(response.getString("acList"), new TypeToken<ArrayList<VABean>>() {}.getType());

list转jsonstring：

       Gson gson = new Gson();
List<VABean> list = new ArrayList<VABean>();
VABean bean =new VABean();
list.add(bean );
String jsonString=gson.toJson(list);