I encounter the error appearing below when trying to run a simple example
using Struts 1.3.5 under Tomcat 5.5.17 and JDK 1.5.

The error arises when the Jasper JSP compiler encounters the following tag
of my .jsp

<html:form action="SubmitFeedback"  method="post" >

I’ve seen references to this error in other  recent postings on this list
but no definitive resolution.

Any help would be greatly appreciated.


org.apache.jasper.JasperException: Module 'null' not found.
       
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWra
pper.java:510)
       
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:3
93)
       
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause 
java.lang.NullPointerException: Module 'null' not found.
        org.apache.struts.taglib.TagUtils.getModuleConfig(TagUtils.java:743)
        org.apache.struts.taglib.TagUtils.getModuleConfig(TagUtils.java:723)
        org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:742)
        org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:417)
       
org.apache.jsp.feedbackForm_jsp._jspx_meth_html_form_0(org.apache.jsp.feedba
ckForm_jsp:153)
       
org.apache.jsp.feedbackForm_jsp._jspService(org.apache.jsp.feedbackForm_jsp:
105)
        org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
       
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:3
32)
       
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


Following is my struts-config.xml

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

<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
          "http://struts.apache.org/dtds/struts-config_1_3.dtd";>

<struts-config>

    <form-beans>
            <form-bean name="feedbackForm" type="app.FeedbackForm">
            </form-bean>
    </form-beans>

    <global-forwards>
        <forward name="welcome" path="feedbackForm.jsp"/>
    </global-forwards>

    <action-mappings>

    <action    path="SubmitFeedback"
               type="app.ProcessFeedbackFormAction"
               name="feedbackForm"
               scope="session"
               validate="false" />


    </action-mappings>

</struts-config>




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