Problem in compiling JSP on jBoss 5.0.0.GA - it works on 4.2

[rogerio.baldini]

Hi Guys,

I am receiving this message when trying to compile a JSP on jBoss 5.0.0.GA:

An error occurred at line: 77 in the jsp file: /plc/layouts/sistema/PlcMenuItemLayout.jsp
The operator + is undefined for the argument type(s) java.lang.Object, java.lang.Object
74: <c:when test="${fn:startsWith(item.link,'/') or fn:startsWith(item.link,'http') or fn:startsWith(item.link,'.')}">
75: <c:set var="linkAjustado" value="${item.link}"/>
76: <c:if test="${not fn:startsWith(item.link,'http') and not fn:startsWith(item.link,'.')}">
77: <c:set var="linkAjustado" value="${pageContext.request.contextPath}${item.link}"/>
78: </c:if>
79: <c:choose>

I have checked source code generated by jBoss 5 and there is some thing strange:

_jspx_th_c_005fset_005f6.setValue((java.lang.Object) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${pageContext.request.contextPath}", java.lang.Object.class, (PageContext)_jspx_page_context, null, false) + (java.lang.Object) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${item.link}", java.lang.Object.class, (PageContext)_jspx_page_context, null, false));

The error refers to this "+" operator between two objects...

I have also checked source code generated by jBoss 4.2 and it is fine:

_jspx_th_c_005fset_005f6.setValue((java.lang.Object) org.apache.jasper.runtime.PageContextImpl.p
roprietaryEvaluate("${pageContext.request.contextPath}${item.link}", java.lang.Object.class, (PageContext)_jspx_page_context, null, false));

Is it a bug on jBoss 5 or could be configured ???

Thanks a lot
Rogerio.

[rogerio.baldini]

This simples JSP doesn't work....

<%@ taglib uri="/WEB-INF/c.tld" prefix="c" %>

<c:set var="p1" value="test1"/>
<c:set var="p2" value="test2"/>

<c:out value="${p1}" />
<c:out value="${p2}" />

<c:set var="p3" value="${p1}${p2}"/>
<c:out value="${p3}" />

What am I doing wrong ???
I can't imagine it's a bug.....

Thanks,
Rogerio

[ssilvert]

I'm not sure why you got that error.

Maybe because you have the tld in /WEB-INF/c.tld? JSTL is built in to JBossAS.

So this will work:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

Also, you need to make sure you use the Servlet 2.5 declaration in web.xml:

<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
 http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

Stan

[rogerio.baldini]

It worked...

Thanks.
Rogerio