 | | | HELP, Xalan and jstl 1.1 problem with transformer | HELP, Xalan and jstl 1.1 problem with transformer 2006-10-01 - By Valeria P.
Hallo everyone,
I am new to this list. I browsed through it several times though and I really
hope someone here can help me.
I know that a lot of people have had the same problem but I could not find a
solution to it, although I tried all the suggestions I came across.
I developed a simple XML based document repository using JSTL xml tags 1.0
under Tomcat 4.0.
Now I am trying to do the same with Tomcat 5 using JSTL 1.1 but I keep
receiving an error message about the instantiation of the transformer:
javax.xml.transform.TransformerFactoryConfigurationError: Provider org.apache
.xalan.transformer.TransformerImpl could not be instantiated: java.lang
.InstantiationException: org.apache.xalan.transformer.TransformerImpl
I did the following to overcome the problem:
- download the latest versions of xalan.jar, xercesImpl.jar and xml-apis.jar
and place them under the WEB-inf directory of my application
- (just to be sure to override any existing old package including the same
classes) place the same files under tomcat-home/common/endorsed
Other details about my test environment:
- Windows XP
- JRE 1.5.0
- Tomcat 5.5.12
- A CMS compliant with Tomcat 5 and coming with JSTL 1.1 libraries (InfoGlue:
www.infoglue.org)
This is my very simple transformer page (identical to the many examples you
find everywhere on the net):
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/xml" prefix="x" %>
<c:import var="xmlText" url="${requestScope.xmlUrl}" />
<c:import var="xslText" url="${requestScope.xslUrl}" />
<c:catch var="ex">
<x:transform xslt="${xslText}" doc="${xmlText}"></x:transform>
</c:catch>
<c:if test="${not empty ex}">
<c:out value="${ex}" />
</c:if>
i also tried with:
<c:import var="xmlText" url="${requestScope.xmlUrl}" charEncoding="UTF-8" />
<c:import var="xslText" url="${requestScope.xslUrl}" charEncoding="UTF-8" />
fearing that maybe the error was due to encoding, but the result was the same.
The request-scoped variables contain what they should (I tested them importing
directly to the page without storing the imported contents in variables).
I really don't know what else to try.
Thank you to those who had the patience to read and to those who will be so
kind to reply...
Valeria
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<DIV><FONT face=Arial size=2>Hallo everyone,</FONT></DIV>
<DIV><FONT face=Arial size=2>I am new to this list. I browsed through it
several
times though and I </FONT><FONT face=Arial size=2>really
hope someone here can help me. </FONT></DIV>
<DIV><FONT face=Arial size=2>I know that a lot of people have had the same
problem but I could not find a solution to it, although I tried all the
suggestions I came across.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I developed a simple XML based document repository
using JSTL xml tags 1.0 under Tomcat 4.0.</FONT></DIV>
<DIV><FONT face=Arial size=2>Now I am trying to do the same with Tomcat 5
using JSTL 1.1 but I keep receiving an error message about the
instantiation of the transformer:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial
size=2>javax.xml.transform.TransformerFactoryConfigurationError: Provider
org.apache.xalan.transformer.TransformerImpl could not be instantiated:
java.lang.InstantiationException:
org.apache.xalan.transformer.TransformerImpl<BR></DIV></FONT><FONT face=Arial
size=2></FONT>
<DIV><FONT face=Arial size=2>I did the following to overcome the
problem:</FONT></DIV>
<DIV><FONT face=Arial size=2>- download the latest versions of xalan.jar,
xercesImpl.jar and xml-apis.jar and place them under the WEB-inf directory of
my
application</FONT></DIV>
<DIV><FONT face=Arial size=2>- (just to be sure to override any existing old
package including the same classes) place the same files under
tomcat-home/common/endorsed</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Other details about my test
environment:</FONT></DIV>
<DIV><FONT face=Arial size=2>- Windows XP</FONT></DIV>
<DIV><FONT face=Arial size=2>- JRE 1.5.0</FONT></DIV>
<DIV><FONT face=Arial size=2>- Tomcat 5.5.12</FONT></DIV>
<DIV><FONT face=Arial size=2>- A CMS compliant with Tomcat 5 and coming with
JSTL 1.1 libraries (InfoGlue: <A
href="http://www.infoglue.org">www.infoglue.org</A>)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>This is my very simple transformer page (identical
to the many examples you find everywhere on the net):</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><%@ taglib uri="<A
href="http://java.sun.com/jsp/jstl/core">http://java.sun.com/jsp/jstl/core</A>"
prefix="c" %><BR><%@ taglib uri="<A
href="http://java.sun.com/jsp/jstl/xml">http://java.sun.com/jsp/jstl/xml</A>"
prefix="x" %><BR></FONT><FONT face=Arial size=2></FONT></DIV>
<DIV><FONT face=Arial size=2><c:import var="xmlText"
url="${requestScope.xmlUrl}" /><BR><c:import var="xslText"
url="${requestScope.xslUrl}" /><BR><c:catch var="ex"><BR>
<x:transform xslt="${xslText}"
doc="${xmlText}"></x:transform><BR></c:catch><BR><c:if
test="${not empty ex}"><BR> <c:out value="${ex}"
/><BR></c:if><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>i also tried with:</FONT></DIV>
<DIV><FONT face=Arial size=2><c:import var="xmlText"
url="${requestScope.xmlUrl}" charEncoding="UTF-8" /><BR><c:import
var="xslText" url="${requestScope.xslUrl}" charEncoding="UTF-8" /><BR
>fearing
that maybe the error was due to encoding, but the result was the
same.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The request-scoped variables contain what
they
should (I tested them importing directly to the page without storing the
imported contents in variables).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I really don't know what else to try.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thank you to those who had the patience to
read and to those who will be so kind to reply...</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Valeria</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> </DIV></FONT><BR>
<br>
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