保存并加载实现actionListener的对象

Question

我正在使用ObjectOutputStream保存一些对象。当我使用ObjectInputStream加载它们时，actionListeners无法正常工作。对象是JPanels，可以在容器中拖动。我怎样才能使它工作？没有太多可读的内容，所以我希望我能在这里得到一些信息。

private void loadInputStream (String file) {

    ObjectInputStream ois = null;
        try {
            mainPanel.removeAll();
            repaint();
            FileInputStream fip = new FileInputStream(file);
            ois = new ObjectInputStream(fip);
            if (ois != null) {
                while(fip.available() > 0) {
                    Component obj = (Component) ois.readObject();
                    mainPanel.add((Component) obj);
                    }
            }   
            ois.close();
        }catch (EOFException  e) {
                // Do Nothing   
        }catch (IOException | ClassNotFoundException e) {
            e.printStackTrace();
        } 
}

private void saveChanges(String selectedWH) {

    try {

        String file = prop.get(warehousesFile, selectedWH);
        FileOutputStream fosTemp = new FileOutputStream(file+"temp");
        ObjectOutputStream oosTemp = new ObjectOutputStream(fosTemp);
        File oosOld = new File(file);

        int compCount = mainPanel.getComponentCount();
            for (int i = 0 ; i < compCount ; i++) {
                Component comp = mainPanel.getComponent(i);
                oosTemp.reset();
                oosTemp.writeObject(comp);
            }

            oosTemp.close();

            if (!oosOld.delete()) {
                System.out.println("error while deleting");

            }

            new File(file+"temp").renameTo(oosOld);
            repaint();

    } catch (IOException iex) {
        ex.printStackTrace();
    }

}