JSF: Creating aliases for properties in backing bean

问题

I am referring to pretty deep object hierarchies with pretty cryptic names in EL as in #{myBean.configBaseStack.excludeMethodFromAccounting.method.TimeoutBehaviorEnabled}.

I would like to point to this very same property through an alias like in:

<x:alias name="m" value="#{myBean.configBaseStack.excludeMethodFromAccounting.method" />
<h:inputText value="#{m.TimeoutBehaviorEnabled}" />

I guess one way to accomplish this would be to create these aliases in the backing bean, but I'd rather leave that to the template.

How to accomplish this in template/facelet level?

回答1:

I think you can use <ui:param> to accomplish this:

<ui:param name="m" value="#{myBean.configBaseStack.excludeMethodFromAccounting.method}"/>

Then you can use it like this on the same page:

<h:inputText value="#{m.TimeoutBehaviorEnabled}" />

回答2:

You could probably use the JSTL-equivalent set tag for this (using the var and value attributes).

回答3:

For all i know aliasing is not not supported in jsf, using the standard components that is.

来源：https://stackoverflow.com/questions/4585755/jsf-creating-aliases-for-properties-in-backing-bean