Struts example with HFS&J not working

I have downloaded the Struts example from wickedlysmart web site and deployed it as mentioned in the book in Tomcat5.
But its giving me the following error when i try to run form.jsp

javax.servlet.ServletException: org/apache/commons/logging/LogFactory
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.form_jsp._jspService(form_jsp.java:89)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause 
 
java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
org.apache.struts.util.MessageResources.<clinit>(MessageResources.java:105)
org.apache.struts.taglib.html.ErrorsTag.<clinit>(ErrorsTag.java:144)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:140)
org.apache.jsp.form_jsp.class$(form_jsp.java:101)
org.apache.jsp.form_jsp._jspx_meth_html_errors_0(form_jsp.java:101)
org.apache.jsp.form_jsp._jspService(form_jsp.java:72)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

although not mentioned in the book I have also tried putting in commons-logging.jar file in the lib directory.
Still same error.
Please Help

Download log4j from Apache. (http://logging.apache.org/site/binindex.html)