We currently can't deploy our webapps as-is with JBoss6, because there's a problem with the TLDs we currently generate:

...
<tlib-version>1.2.3</tlib-version>
...

... is not valid as per the 2.0 taglib xsd which expects a plain decimal for this value, such as "123" (http://java.sun.com/xml/ns/javaee/web-jsptaglibrary_2_1.xsd)

It is otoh valid with 2.1, where the version type has been revised: http://java.sun.com/xml/ns/javaee/jsp_2_1.xsd

Fixing XDoclet's web plugin should not be too complicated, but it might not be as easy to get a release out in due time. I'll try to contact the developers...

See:

• filtering the value: http://jira.codehaus.org/browse/XDP-252
• support for 2.1: http://jira.codehaus.org/browse/XDP-251

Another option would to use a different tool: http://code.google.com/p/tld-generator/ for example could be interested. It looks like you just need to drop it in the build-time classpath. It might be a little less flexible (in that it requires the version number to be passed as an annotation parameter, for example), but probably patchable. It also seems to be currently fixed on the jsp 2.1 api.