使用属性创建对象， 例如:-

Create an Object with your attributes, eg:-

public class User {
    Integer id;
    String firstName,
    String lastName;
    List<Role> roles;// Where roles is a list of another Object Role
    //getter and setter methods
}

然后

    public class Manager{
        public static void main(String[] args) {
            String json = "{'id':1,'firstName':'Deva','lastName':'Raj','roles':['ADMIN','MANAGER']}";
            Gson gson = new Gson();
            User user = gson.fromJson(json, User.class);
            System.out.println(user);
        }
    }