如何在使用特定字段的FeedbackLabels时避免不必要的Wicket日志警告？

Question

我使用"FeedbackLabels“来显示特定于组件的验证消息，这是基于博客文章：使用Wicket对用户友好的表单验证中的思想和代码。

问题是，使用这样的FeedbackLabels进行验证消息的页面在日志中充斥着多余的警告：

2012-05-04 10:43:32,824 ["http-bio-8080"-exec-6] WARN  org.apache.wicket.protocol.http.WebSession - Component-targetted feedback message was left unrendered. This could be because you are missing a FeedbackPanel on the page.  Message: [FeedbackMessage message = "Tilille on pakollinen tieto", reporter = toAccount, level = ERROR]
2012-05-04 10:43:32,824 ["http-bio-8080"-exec-6] WARN  org.apache.wicket.protocol.http.WebSession - Component-targetted feedback message was left unrendered. This could be because you are missing a FeedbackPanel on the page.  Message: [FeedbackMessage message = "Tililtä on pakollinen tieto", reporter = fromAccount, level = ERROR]
2012-05-04 10:43:32,824 ["http-bio-8080"-exec-6] WARN  org.apache.wicket.protocol.http.WebSession - Component-targetted feedback message was left unrendered. This could be because you are missing a FeedbackPanel on the page.  Message: [FeedbackMessage message = "Viitenro on pakollinen tieto", reporter = reference, level = ERROR]
2012-05-04 10:43:35,039 ["http-bio-8080"-exec-6] WARN  org.apache.wicket.protocol.http.WebSession - Component-targetted feedback message was left unrendered. This could be because you are missing a FeedbackPanel on the page.  Message: [FeedbackMessage message = "Tilille on pakollinen tieto", reporter = toAccount, level = ERROR]
[...]

Wicket声称：

组件目标反馈消息未呈现。这可能是因为页面上缺少一个FeedbackPanel。

问题是，正如您在屏幕截图中看到的，这些消息是呈现的(在每个字段的FeedbackLabels中)，而I do在页面上也有一个FeedbackPanel (但是它使用ComponentFeedbackMessageFilter过滤了组件目标的消息，这样就不会显示两次)。

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无论如何，这些日志消息显然是无用的。，我怎么才能让Wicket闭嘴呢？(不诉诸蛮力的方法，比如将日志级别更改为致命的。)应该在Daan的FeedbackLabel实现中修复一些东西吗(见下文)？

附录:基本上，FeedbackLabel (扩展标签)检查相关组件是否有反馈消息，如果有，则显示它。如果您不介意从文章加载代码，下面是相关的部分：

// (Author of this code is Daan, StuQ.nl
// it's licenced under Apache 2.0 license.)
@Override
protected void onBeforeRender() {
    super.onBeforeRender();

    if(component.getFeedbackMessage()!=null) {
        if(this.text!=null) {
            setDefaultModel(this.text);
        } else {
            setDefaultModel(new Model(component.getFeedbackMessage().getMessage()));
        }

        this.add(new AttributeModifier("class", true, new Model("feedbackLabel " + component.getFeedbackMessage().getLevelAsString())));
    } else {
        setDefaultModel(new Model(""));
    }
}

Answer 1

FeedbackMessage有一个markRendered()函子。对于添加到标签中的每条消息，我都会添加一个调用。查看FeedbackPanel的代码。