如何从JSF 2.0 Facelets模板调用List.size()? [英] How do you call List.size() from a JSF 2.0 Facelets Template?

问题描述

在JSF 2.0 Facelets模板中调用list.size()的语法是什么(例如，使用h:outputText元素)?

What is the syntax for calling list.size() in a JSF 2.0 Facelets template (eg, using an h:outputText element)?

推荐答案

这是怎么回事:

<h:outputText value="#{fn:length(someBean.someList)}" />

您需要在JSF页面(URI:http://java.sun.com/jsp/jstl/functions)中引用functions标签库.

You'll need to reference the functions taglib in your JSF page (URI: http://java.sun.com/jsp/jstl/functions).

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