Facelet TagHandler in seam.

[brentgfox]

I've been working on developing a facelet tag to simplify my content display, and am encountering a NoClassDefFoundError: com/sun/facelets/tag/TagHandler. I have the jsf-taglib.jar within my war files /lib folder, and am using the SeamFaceletViewHandler, with no issues untill I add my custom tag.

My tag handler class, DisplayComponentHandler extends TagHandler, compiles without issue, and deploys without error. When rendering a page, however, I get the exception.

Here is the taglib declaration.

<?xml version="1.0" encoding="ISO-8859-1" ?>

<!DOCTYPE facelet-taglib PUBLIC
 "-//Sun Microsystems, Inc.//DTD Facelet Taglib 1.0//EN"
 "http://java.sun.com/dtd/facelet-taglib_1_0.dtd">
<facelet-taglib>
 <namespace>http://www.test.com/jsf/html</namespace>
 <tag>
 <tag-name>displayContent</tag-name>
 <handler-class>com.test.ui.DisplayComponentHandler</handler-class>
 </tag>
</facelet-taglib>

and the entry within the web.xml file

 <context-param>
 <param-name>facelets.LIBRARIES</param-name>
 <param-value>/WEB-INF/tld/displaycomponent.taglib.xml</param-value>
 </context-param>

Any ideas why the classloader wouldn't be able to find the class definition for the TagHandler class? Or have I missed something obvious?

[pmuir]

I assume you mean jsf-facelets.jar in WEB-INF/lib folder - if not that might be the problem. Otherwise you need to you need to make sure that jsf-facelets.jar is available to the classloader that is loading the tag - i.e. if jsf-facelets jar is in the war, the ComponentHandler should be as wel.

[brentgfox]

"petemuir" wrote:
I assume you mean jsf-facelets.jar in WEB-INF/lib folder - if not that might be the problem. Otherwise you need to you need to make sure that jsf-facelets.jar is available to the classloader that is loading the tag - i.e. if jsf-facelets jar is in the war, the ComponentHandler should be as wel.

Sorry - yeah - I've been spending WAY too much time behind the keyboard :-)

I have the jsf-facelets.jar within the WEB-INF/lib/, and within the WEB-INF/classes, I should have had the com/test/ui/DisplayComponentHandler.class file.

I didn't - which led to the error above.

Thanks for the quick post.