json对象转java对象

json格式：

{
    "data":[
        {"name":"wang","age":20},
        {"name":"li","age":10},
        {"name":"zhang","age":30}
    ]
}

json对象转java对象

List lists = null;
JSONArray userJSonArray = json.getJSONArray("data");
for (int i = 0; i < userJSONArray.size(); i++) {
    JSONObject jsonObject = userJSONArray.getJSONObject(i);
    User user = JSON.parseObject(jsonObject.toJSONString(), User.class);
    lists.add(user);
}