Wicket：在java中将json传递给ListView

List userList = Arrays.asList(
            new User[] {
                new User("FirstA", "LastA"),
                new User("FirstB", "LastB"),
                new User("FirstC", "LastC")
              });


    add(new ListView("listview", userList) {
        protected void populateItem(ListItem item) {
            User user = (User) item.getModelObject();
            item.add(new Label("firstname", user.getFirstname()));
            item.add(new Label("lastname", user.getLastname()));
        }
    });
List userList = Arrays.asList(
            new