先看一下RepeatingView：

html：

    <tr wicket:id="repeating">
        <td><span wicket:id="actions">[actions]</span></td>
        <td><span wicket:id="contactid">[contactid]</span> </td>
        <td><span wicket:id="firstname">[firstname]</span></td>
        <td><span wicket:id="lastname">[lastname]</span></td>
        <td><span wicket:id="homephone">[homephone]</span></td>
        <td><span wicket:id="cellphone">[cellphone]</span></td>
    </tr>

java：

        RepeatingView repeating = new RepeatingView("repeating");
        add(repeating);

        int index = 0;
        while (contacts.hasNext())
        {
            AbstractItem item = new AbstractItem(repeating.newChildId());

            repeating.add(item);
            Contact contact = contacts.next();

            item.add(new ActionPanel("actions", new DetachableContactModel(contact)));
            item.add(new Label("contactid", String.valueOf(contact.getId())));
            item.add(new Label("firstname", contact.getFirstName()));
            item.add(new Label("lastname", contact.getLastName()));
            item.add(new Label("homephone", contact.getHomePhone()));
            item.add(new Label("cellphone", contact.getCellPhone()));
            。。。。。

如果是常规的组件，应该是repeating.add(xxx)，但是repeating组件是通过创建新的item，将模板中的子组件添加到这个item中去，这就是最明显的区别。同时，这个item代表了外围的组件，你可以对它添加属性，修改属性等等。

RefreshingView：

    <tr wicket:id="view">
        <td><span wicket:id="itemid">[item id]</span></td>
        <td><span wicket:id="actions">[actions]</span></td>
        <td><span wicket:id="contactid">[contactid]</span> </td>
        <td><span wicket:id="firstname">[firstname]</span></td>
        <td><span wicket:id="lastname">[lastname]</span></td>
        <td><span wicket:id="homephone">[homephone]</span></td>
        <td><span wicket:id="cellphone">[cellphone]</span></td>
    </tr>

 RefreshingView<Contact> view = new RefreshingView<Contact>("view")
        {
            private static final long serialVersionUID = 1L;

            /**
             * Return an iterator over models for items in the view
             */
            @Override
            protected Iterator<IModel<Contact>> getItemModels()
            {
                return contacts.iterator();
            }

            @Override
            protected void populateItem(final Item<Contact> item)
            {
                Contact contact = item.getModelObject();
                item.add(new Label("itemid", item.getId()));
                item.add(new ActionPanel("actions", item.getModel()));
                item.add(new Label("contactid", String.valueOf(contact.getId())));
                item.add(new Label("firstname", contact.getFirstName()));
                item.add(new Label("lastname", contact.getLastName()));
                item.add(new Label("homephone", contact.getHomePhone()));
                item.add(new Label("cellphone", contact.getCellPhone()));

                item.add(AttributeModifier.replace("class", new AbstractReadOnlyModel<String>()
                {
                    private static final long serialVersionUID = 1L;

                    @Override
                    public String getObject()
                    {
                        return (item.getIndex() % 2 == 1) ? "even" : "odd";
                    }
                }));
            }
        };

可见RefreshingView看起来更加组件化，更加OO，除此之外，我没看出有什么区别。

接下来是DataView，

DataView is a basic implementation of AbstractPageableView. Data views aim to make it very simple to populate your repeating view from a database by utilizing IDataProvider to act as an interface between the database and the dataview.

DataView是这个类分支的末端，可控性和封装都合适的实现。

DataView上面是DataViewBase，其下的类分支有：

GridView，DataGridView，这两个类的便利性增加，可控性下降。

<table cellspacing="0" cellpadding="2" border="1">
    <tr wicket:id="rows">
        <td wicket:id="cells">
            <span wicket:id="cell">cell content goes here</span>
        </td>
    </tr>
</table>

   public DataGridPage()
    {
        List<ICellPopulator<Contact>> columns = new ArrayList<ICellPopulator<Contact>>();

        columns.add(new PropertyPopulator<Contact>("id"));
        columns.add(new PropertyPopulator<Contact>("firstName"));
        columns.add(new PropertyPopulator<Contact>("lastName"));
        columns.add(new PropertyPopulator<Contact>("homePhone"));
        columns.add(new PropertyPopulator<Contact>("cellPhone"));

        add(new DataGridView<Contact>("rows", columns, new SortableContactDataProvider()));
    }

后两者可能更加适合存粹的数据展示，不需要交互。同时更加轻量。

wicket的RepeatingView