如何覆盖 h:selectOneRadio 渲染器?jsf-impl 中的渲染器类在哪里? [英] How to override h:selectOneRadio renderer? Where is the renderer class in jsf-impl?

问题描述

是否可以覆盖 使用的渲染器?我试图从 JSF 2.2 的 jsf-impl 包中找到该类，但没有找到.我想这样做的原因是为了摆脱它生成的表.

Is it possible to override renderer used by <h:selectOneRadio>? I tried to find the class from jsf-impl package of JSF 2.2 but didn't find it. The reason I want to do this is to get rid of the table it generates.

推荐答案

是否可以覆盖 h:selectOneRadio 使用的渲染器?

是的，确实如此.否则，像 PrimeFaces 这样的 UI 组件库将不存在.

Yes, surely it is. Otherwise, UI component libraries like PrimeFaces couldn't exist.

我试图从 jsf-impl 包中找到该类，但没有找到.

确切的类取决于您使用的 JSF 实现.如果是 Mojarra，则是 com.sun.faces.renderkit.html_basic.RadioRenderer 类.如果是 MyFaces，则是 org.apache.myfaces.renderkit.html.HtmlRadioRenderer 类.

The exact class depends on the JSF implementation you're using. If it's Mojarra, then it's the com.sun.faces.renderkit.html_basic.RadioRenderer class. If it's MyFaces, then it's the org.apache.myfaces.renderkit.html.HtmlRadioRenderer class.

为了正确覆盖它，只需在必要时扩展类和覆盖方法，并在您的 faces-config.xml 中按如下方式注册它:

In order to properly override it, just extend the class and override methods where necessary and register it as follows in your faces-config.xml:

<render-kit>
    <renderer>
        <component-family>javax.faces.SelectOne</component-family>
        <renderer-type>javax.faces.Radio</renderer-type>
        <renderer-class>com.example.MyRadioRenderer</renderer-class>
    </renderer>
</render-kit>

请记住，您通过这种方式将渲染器与特定的 JSF 实现/版本紧密耦合.这种扩展的渲染器与不同的 JSF 实现不兼容(即，当您用 MyFaces 替换 Mojarra 时，您的应用程序不会部署)，并且可能会在当前 JSF 实现更新到更新版本时中断.如果您对此感到担心，请考虑完全从头开始编写渲染器，例如 PrimeFaces 等.做.

Keep in mind that you're this way tight-coupling the renderer to the specific JSF impl/version. Such an extended renderer is not compatible with a different JSF implementation (i.e. your app wouldn't deploy when you ever replace Mojarra by MyFaces) and may possibly break when the current JSF implementation has been updated to a newer version. If you worry about this, consider writing the renderer entirely from scratch, like PrimeFaces et.al. do.

我想这样做的原因是为了摆脱它生成的表.

考虑查看 Tomahawk 或 PrimeFaces 而不是重新发明轮子.它们分别有一个 <t:selectOneRadio layout="传播><t:radio> 和 <p:selectOneRadio layout="custom"><p:radioButton> 允许您将这些东西放置在您想要的任何位置.

Consider looking at Tomahawk or PrimeFaces instead of reinventing the wheel. They have respectively a <t:selectOneRadio layout="spread"><t:radio> and <p:selectOneRadio layout="custom"><p:radioButton> which allows you positioning those things everywhere you want.

• 呈现表格元素，如何避免这种情况?

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