问题
I'm using the repeat tag of JSF 2.0 to loop through a list of objects and display some of their properties. I want to use the varStatus attribute of repeat so that I can access the loop index, the number of the last list item, and to tell whether the end of the list has been reached (so the spacer won't be displayed). I thought this would work:
<ui:repeat var="anObject" varStatus="repeatStatus" value="#{objectList}">
<h:panelGroup>
<h:outputText value="Item #{repeatStatus.index + 1} of #{repeatStatus.end}" />
<h:outputText value="#{anObject.text}" />
</h:panelGroup>
<h:outputText value=" " rendered="#{false == repeatStatus.last}" />
</ui:repeat>
However, it never displays anything for repeatStatus.end. The index and last properties work well.
Instead of repeatStatus.end, I tried using objectList.size(), but that worked for only the first item in the list.
How can I display the number of items in the list as part of the "Item x of y" text?
回答1:
The end is only used when you set the size attribute.
<ui:repeat ... size="#{fn:length(objectList)}">
Alternatively, you can also just use it directly.
Item #{repeatStatus.index + 1} of #{fn:length(objectList)}
By the way, the boolean comparison in #{false == repeatStatus.last} is ugly. It returns a boolean already; if you want to negate it, rather use #{not repeatStatus.last}.
来源：https://stackoverflow.com/questions/11766259/cant-use-the-end-property-of-jsf-2-0-repeat-tags-varstatus