JSF and File Downloads, Take Two
Wednesday, April 05, 2006 |Yesterday, I detailed some issues I was having getting a JSF app to allow the download of an Excel spreadsheet as the result of a backing bean action being called. My solution involved a servlet and some JavaScript, with just a -pinch- a fistful of kludge.
Thanks to the esteemed Mr. Chad Cummings, I have a better solution, and it involves one small change to the backing bean (the navigation target returned) and the addition of this snippet to the JSF page:
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<h:panelGrid columns="1" rendered="#{batchAuditReportBean.workBook != null}">
<f:verbatim>
<iframe src="success.jsp" style="visibility: hidden"/>
</f:verbatim>
</h:panelGrid>
Is it still a bit of a hack? Maybe so, but it does work, and is a whole lot cleaner. That’s a plus in my book, so I’m going to commit this to our Subversion repository.
My name is Jason Lee. I am a software developer living in the middle of Oklahoma. I’ve been a professional developer since 1997,
using a variety of languages, including Java, Javascript, PHP, Python, Delphi, and even a bit of C#. I currently work for Red Hat
on the WildFly/EAP team, where, among other things, I maintain integrations for some MicroProfile specs, OpenTelemetry, Micrometer,
Jakarta Faces, and Bean Validation. (Full resume 