Grouper Users - Open Discussion List

[Dominique Petitpierre <>]

Hello,

On 07/31/2012 03:31 PM, Chris Hyzer wrote:
> Sorry, Grouper does not work in the latest servlet container since for some 
> reason they changed EL without making it backwards compatible... can you 
> use the older version e.g. tomcat 6?

Trying to use Grouper 2.1.1 UI with Apache Tomcat 7.0.29 I ran into
the same problem reported by Dick Visser.  After some tinkering the
following change seems to fix the problem:

diff $CATALINA_HOME/webapps/grouper/WEB-INF/jsp/dynamicTile.jsp{.01,}
34c34
<       <!-- <c:out value="${uiException.class.simpleName}"/>:<c:out
escapeXml="false" value="${uiException.message}"/> -->
---
>       <!-- <c:out value="#{uiException.class.simpleName}"/>:<c:out 
> escapeXml="false" value="${uiException.message}"/> -->


The hint came from reading this tutorial chapter on EL 2.2:
The Java EE 6 Tutorial
  6.  Expression Language
    Value and Method Expressions
      Method Expressions
http://docs.oracle.com/javaee/6/tutorial/doc/bnahu.html#bnahz

A very quick test exercising just a few UI features showed no other
errors on screen or in grouper_ui.log.


- Is this change compatible with JSP 2.1/EL 2.1? (i.e. can the same
  version of the file be used for Tomcat 6 and Tomcat 7?)

- Would it be easy to generalize this change to fix all affected
  Grouper JSP files (i.e. those not compatible with EL 2.2)?

- Alternatively, is it possible to force the use of JSP 2.1/EL 2.1 in
  Tomcat 7?  (e.g. similar to the declaration of the Servlet version,
  2.4 vs 3.0, in web.xml).

Best regards,
Dominique
--
Mr Dominique Petitpierre, user=Dominique.Petitpierre domain=unige.ch
IT Division, University of Geneva, Switzerland