problem with jstl tags

[Kerry Wilson]

Sorry if this is a noob question, but if the shoe fits...

This is my first time using these tags. I have these embedded within a tile, but get an intermittent error after about 10 refreshes, here is my code:

<jsp:useBean id="adminAuthenticated" type="java.lang.Boolean" scope="session"/>
<jsp:useBean id="dealerAuthenticated" type="java.lang.Boolean" scope="session"/>
 <c:choose>
  <c:when test="${ adminAuthenticated || dealerAuthenticated }">
    <c:out value="You Are Logged In As ${displayName}"/>
  </c:when>
  <c:when test="${ NOT ( adminAuthenticated || dealerAuthenticated ) }">
   <c:out value="You Are Not Logged In"/>
  </c:when>
 </c:choose>

And here is the error:

 <h3>Validation error messages from TagLibraryValidator for c</h3><p>79: tag = 'when' / attribute = 'test':
 An error occurred while parsing custom action attribute "test" with value "${ NOT ( adminAuthenticated || dealerAuthenticated ) }": 
org.apache.taglibs.standard.lang.jstl.parser.ParseException: EL functions are not supported.</p>

[Bear: edited for format]
[Bear: also disabled smilies]
[ July 29, 2005: Message edited by: Bear Bibeault ]

[Kerry Wilson]

I have modified my when clauses to the following:

According to TLD or attribute directive in tag file, attribute test does not accept any expressions

<c:when test="${ adminAuthenticated || dealerAuthenticated }">
 
<c:when test="${ !adminAuthenticated && !dealerAuthenticated }">

And now about once every 5 refreshes I get this error

According to TLD or attribute directive in tag file, attribute test does not accept any expressions

[Bear Bibeault]

What container and JSTL implementation are you using? With Tomcat 5 and the Jakarta JSTL, I've never encountered any bizarre issues such as this.

[Kerry Wilson]

I am using tomcat 5.5

[Kerry Wilson]

If i put this in the taglib-uri it works (For some reason)!

http://java.sun.com/jstl/core_rt

[Bear Bibeault]

You did not answer the question regarding what JSTL implementation, and more impportantly, what version.

It appears that you might be using a JSTL 1.0 implementation which is not appropriate for a JSP 2.0 containter such as Tomcat 5. You should be using a JSTL 1.1 implementation.

[Bear Bibeault]

To add a bit to this:

If your JSTL URI is not

<a href="http://java.sun.com<b rel="nofollow">/jsp</b>/jstl/core" target="_blank">http://java.sun.com/jsp/jstl/core

then you are not using the JSTL 1.1.

[Kerry Wilson]

I guess this means I am using jstl 1.0:

<taglib>
  <tlib-version>1.0</tlib-version>
  <jsp-version>1.2</jsp-version>
  <short-name>c</short-name>

[Bear Bibeault]

Get thee a JSTL 1.1 implementation fortwith!

[Esai ADIDRAVID]

It happened with me too.

I had the following lines in my .jsp file
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c"%>

If you see above, both were core which may be not right.

So, I changed the second laglib to core_rt; that is
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="c"%>

The change is from "core" to "core_rt".

Then it worked!!!

Esai

[Amit Ghorpade]

Esai ADIDRAVID can you please adjust last name so that it does not contain all uppercase letters.
[ December 05, 2008: Message edited by: Amit Ghorpade ]