使用Wicket生成注释掉的内容 [英] Generating commented-out content with Wicket

问题描述

出于调试原因，我想在Wicket网页的HTML输出中包含某些信息，包含在HTML注释中。

输出会是...

  ！ -  
< div wicket：id =foo> 1234< / div> 
  - > 
  

...其中1234是一些有趣的动态创建的信息。

我试过，无效：

• - < div wicket：id =foo>< / div> - > →Wicket抱怨HTML网页中缺少标识为foo的元素


• 将 remove> →这些栏目不能包含 wicket：id


• .setVisible（false）→Wicket根本不输出标签


• new Label（foo，< - + foo + - >）→< 和> get escaped

那么，你能用Wicket做这件事吗p>

解决方案

如何解决？

  class CommentOutModifier extends AbstractBehavior {
 private static final long serialVersionUID = 1L; 
 
 @Override 
 public void beforeRender（Component component）{
 component.getResponse（）。write（<！ - ）; 
} 
 
 @Override 
 public void onRendered（Component component）{
 component.getResponse（）。write（ - >）; 
} 
} 
 
 add（new Label（tohide，你能看到我吗？）add（new CommentOutModifier 
  

那么：

 < span wicket：id =tohide>< / span>您的标记中的
  

会产生：

 <！ - < span>您能看到我吗？< / span>  - > 
  

For debug reasons, and on a whim, I'd like to include certain information in a Wicket page's HTML output that is enclosed in HTML comments.

The output would be something like...

<!-- 
<div wicket:id="foo"> 1234 </div>
-->

...where "1234" is some interesting, dynamically created piece of information.

I have tried, to no avail:

• <!-- <div wicket:id="foo"></div> --> → Wicket complains that element with id "foo" is missing from the HTML page
• enclose in <wicket:remove> → such sections cannot contain elements with wicket:id
• label.setVisible(false) → Wicket doesn't output the label at all
• new Label("foo", "<!-- " + foo + " -->") → the < and > get escaped

So, can you do this with Wicket (easily), or should I just forget about it?

解决方案

How about this?

class CommentOutModifier extends AbstractBehavior {
    private static final long serialVersionUID = 1L;

    @Override
    public void beforeRender(Component component) {
        component.getResponse().write("<!--");
    }

    @Override
    public void onRendered(Component component) {
      component.getResponse().write("-->");
    }
}

add(new Label("tohide", "Hi, can you see me?").add(new CommentOutModifier()));

then, putting:

<span wicket:id="tohide"></span>

in your markup will yield:

<!--<span>Hi, can you see me?</span>-->

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