如何在每页刷新时调用方法

Question

如何调用每个刷新页面或当有人进入页面时的“加载”方法？

@Route
public class Gui extends VerticalLayout {

    TextField textField;
    DataManager dao;

    @Autowired
    public Gui(DataManager dao) {
        this.dao = dao;
        textField = new textField();
        add(textField);

    }

    void load()
    {
        textField.setValue(dao.getNewName());
    }
}