如何使用AjaxLink更新Wicket-Listview？

Question

我想通过Ajax-Link用NewsEntries更新我的ListView.我每个月都有一个链接,点击后,我想显示特定月份的新闻.

我尝试了本教程,但它不起作用:http: //blog.xebia.com/2008/06/04/wicket-updating-listviews-using-an-ajaxlink/

以下是我的代码示例:

    add(new Label("title", "News Archive"));

    List<NewsEntry> newsEntries = new ArrayList<NewsEntry>();

    final ListView<NewsEntry> listview = new ListView<NewsEntry>(
            "newsItem", newsEntries)
    {
        private static final long serialVersionUID = -4294698878214798680L;

        @Override
        protected void populateItem(final ListItem<NewsEntry> item)
        {
            Link<Void> link = new Link<Void>("newsItemLinkID")
            {
                private static final long serialVersionUID = 6176760893378172041L;

                @Override
                public void onClick()
                {
                    setResponsePage(getPage());
                }
            };

            link.add(new Label("newsItemLinkName", item.getModelObject()
                    .getHeadline()));
            link.setOutputMarkupId(true);
            item.add(link);
        }
    };
    listview.setOutputMarkupId(true);
    add(listview);

    add(new AjaxLink<Object>("march")
    {
        private static final long serialVersionUID = 974013580329804810L;

        @Override
        public void onClick(AjaxRequestTarget target)
        {
            NewsDAO news = new NewsDAO();
            listview.setList(news.getNewsFromMonth(MONTH.MARCH));
            target.addChildren(listview, Link.class);
        }
    });

目前,不会显示任何内容.我没有错误,无论是在ajax-debug窗口,还是在我的eclipse控制台中.我现在有点卡住了,不知道什么是错的.

Answer 1

您应该将ListView包装到WebMarkupContainer中并更新此Container而不是ListView.

WebMarkupContainer wmc = new WebMarkupContainer("listWmc");
add(wmc);

// init your listView
// ...

wmc.add(listView);