Run-Time expression evaluation does not work with custom TagLib

Question

          Hi,
          Using "WebLogic EJB to JSP Integration Tool", we have created a custom TagLib.
          We can properly deploy/start our Web application (a WAR file), but whenever we
          go to the JSP page that is using the custom Tag, we get the following exception:
          java.lang.ClassCastException: java.lang.Object
          at javax.servlet.jsp.tagext.TagData.getAttributeString(TagData.java:165)
          Here is what we have in our JSP page:
          <%@ taglib uri="Students-tags" prefix="students" %>
          <%
          String studentID = (String)session.getAttribute("studentID");
          %>
          <students:Register studentID="<%=studentID%>" />
          <%
          And the TLD file looks like this:
          <?xml version="1.0" encoding="ISO-8859-1" ?>
          <!DOCTYPE taglib
          PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN" "http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd">
          <taglib>
          <tlibversion>1.0</tlibversion>
          <shortname>ejb2jsp generated tag library</shortname>
          <tag>
          <name>Register</name>
          <tagclass>EJBs.Students.jsp_tags._Students_RegisterTag</tagclass>
          <teiclass>EJBs.Students.jsp_tags._Students_RegisterTagTEI</teiclass>
          <info>
          attribute 'studentID' expects java type 'java.lang.String'
          </info>
          <attribute>
          <name>studentID</name>
          <required>true</required>
          <rtexprvalue>true</rtexprvalue>
          </attribute>
          </tag>
          </taglib>
          and Web.xml file does have the following entry:
          <taglib>
          <taglib-uri>
          Students-tags
          </taglib-uri>
          <taglib-location>
          /WEB-INF/Students-tags.tld
          </taglib-location>
          </taglib>
          Does anybody knows whay Do I get such an exception ?
          

Answer 1

You might want to ask this in a servlet/jsp interest group.