See the build.xml for requisite JARs.

• commons-beanutils.jar - Jakarta Commons BeanUtils 1.2
• commons-collections.jar - Jakarta Commons Collections 1.0
• commons-digester.jar - Jakarta Commons Digester 1.1.1
• scaffold.jar - Jakarta Struts nightly build (see contrib folder)
• struts.jar - Jakarta Struts nightly build
• lucene.jar - Jakarta Lucene 1.2 RC 2
• poolman.jar - PoolMan 2.0.4
• validator.jar - Struts Validator

Also these tld's from the Struts distribution (above) placed in the /WEB-INF/lib folder with the JARs

• struts-bean.tld
• struts-html.tld
• struts-logic.tld