Wicket组件不会通过AJAX刷新

Question

我有一个Wicket页面，其中包含一些应该通过Ajax更新的组件。我有以下AjaxBehavior：

private class MyAjaxBehavior extends AbstractDefaultAjaxBehavior {

        @Override
        public void renderHead(IHeaderResponse response) {
            super.renderHead(response);
            response.renderOnLoadJavascript("wicketAjaxPost(\"" + getCallbackUrl() + "\")");
        }

        @Override
        public void onConfigure(Component component) {
            firstComponent.setOutputMarkupId(true);
            secondComponent.setOutputMarkupId(true);
        }

        @Override
        protected void respond(AjaxRequestTarget target) {
            firstComponent.replaceWith(createFirstComponent());
            target.addComponent(firstComponent);

            secondComponent.replaceWith(createSecondComponent());
            target.addComponent(secondComponent);
        }
    }

Page
- fragment1
  - fragment1-1
    - firstComponent
- secondComponent

        // Initialize temporary variables
        final Page page = component.findParent(Page.class);
        if (page == null)
        {
            // dont throw an exception but just ignore this component, somehow
            // it got
            // removed from the page.
            // throw new IllegalStateException(
            // "Ajax request attempted on a component that is not associated
            // with a Page");
            LOG.debug("component: " + component + " with markupid: " + markupId +
                " not rendered because it was already removed from page");
            return;
        }

<div>
    <div id="generated">new component is added here</div>
    <table>
        ...
        <tr>old component</tr>
    </table>
</div>

<div>
    <table class="summary" style="width: 100%">
        <tr>
            <div wicket:id="firstComponent" />
        </tr>
    </table>
</div>

...

<wicket:fragment wicket:id="firstComponentFragment">
    <th>title</th>
    <td><span wicket:id="someText"></span></td>
</wicket:fragment>

Answer 1

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Answer 2

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