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Hi Johan:
<p>I have not worked with JBoss extensively, but trying to add/replace
libraries in the app server installation is never a good idea. What you
can try is package your application such that the library jar files lie
inside the archive. See this link for details on how to do this:
<p>www.onjava.com/pub/a/onjava/2001/06/26/ejb.html
<p>This article provides for a cleaner solution.
<p>Hope this helps.
<p>Best regards
<p>Sanjeev
<br>
<p>Johan Mörén wrote:
<blockquote TYPE=CITE>Hi!
<p>Im trying use the Xpath feature of JDOM B9 in a SessionBean running
on a JBOSS 3.2.2 server but Jboss is having troubles finding the saxpath
library required at runtime.
<p>I have tried with both adding and/or replacing the jdom libraries in
${JBOSS_HOME}/lib and {JBOSS_HOME}/server/default/lib but i always end
up with this exception when initilizing the SessionBean:
<p><trace>
<p>09:47:44,397 ERROR [LogInterceptor] Unexpected Error:
<br>java.lang.NoClassDefFoundError: org/saxpath/SAXPathException
<br> at java.lang.Class.forName0(Native
Method)
<br> at java.lang.Class.forName(Class.java:140)
<br> at org.jdom.xpath.XPath.newInstance(XPath.java:133)
<br> at net.spray.se.pravda2.ejb.NewsItemServiceBean.setSessionContext(Unknown
Source)
<br> at net.spray.se.pravda2.ejb.NewsItemServiceSession.setSessionContext(Unknown
Source)
<br> at org.jboss.ejb.StatelessSessionEnterpriseContext.<init>(StatelessSessionEnterpriseContext.java:47)
<br> at org.jboss.ejb.plugins.StatelessSessionInstancePool.create(StatelessSessionInstancePool.java:35)
<br> at org.jboss.ejb.plugins.AbstractInstancePool.get(AbstractInstancePool.java:168)
<br> at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceIntercepto
<br>r.java:58)
<br> at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:84)
<br> at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:267)
<br> at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:128)
<br> at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:118)
<br> at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
<br> at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
<br> at org.jboss.ejb.StatelessSessionContainer.internalInvoke(StatelessSessionContainer.java:331)
<br> at org.jboss.ejb.Container.invoke(Container.java:700)
<br> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
<br> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
<br> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
<br> at java.lang.reflect.Method.invoke(Method.java:324)
<br> at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
<br> at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
<br> at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:367)
<br> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
<br> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
<br> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
<br> at java.lang.reflect.Method.invoke(Method.java:324)
<br> at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
<br> at sun.rmi.transport.Transport$1.run(Transport.java:148)
<br> at java.security.AccessController.doPrivileged(Native
Method)
<br> at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
<br> at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
<br> at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
<br> at java.lang.Thread.run(Thread.java:536)
<p></trace>
<p>This is the Xpath specific code that runns in the setSessionContext
method. However i dont thing the code is the problem since i can get the
code to compile and run outside Jboss.
<p><code>
<br>
try
<br>
{
<br>
log.debug("Creating XPath instances...");
<br>
xpStartDate = XPath.newInstance("/sprayNewsItem/header/startDate");
<br>
xpEndDate = XPath.newInstance("/sprayNewsItem/header/endDate");
<br>
xpProvider = XPath.newInstance("/sprayNewsItem/header/provider");
<br>
xpPhase = XPath.newInstance("/sprayNewsItem/header/phase");
<br>
xpPriority = XPath.newInstance("/sprayNewsItem/header/priority");
<br>
xpCategory = XPath.newInstance("/sprayNewsItem/header/category");
<br>
xpSubCategory =
<br>
XPath.newInstance("/sprayNewsItem/header/subCategory");
<br>
log.debug("Created XPath instances");
<br>
}
<br>
catch (Exception e)
<br>
{
<br>
log.error("Failed to create XPath instances" + e);
<br>
throw new RemoteException("Failed to create XPath instances, " + e);
<br>
}
<br></code>
<p>Does anyone of you had similar troubles? And perhaps found a soloution
and/or an explanation?
<p>Regards,
<br>Johan Mörén
<br>
<br>
<br>
<p>_____________________________________________________s_p_r_a_y__
<p>Johan Mörén | Systems developer
<br>Spray Network AB Box 5169 SE-102 44 Stockholm Sweden
<br>johan.moren@staff.spray.se | Phone: +46-(0)8-410 90 000
<p><a href="http://www.spray.se">http://www.spray.se</a> - nu är det lättare
att umgås
<br>
<p>"It gets harder the more you know. Because the more you know the uglier
everything seems" - Frank Zappa
<br>
<p>_______________________________________________
<br>To control your jdom-interest membership:
<br><a href="http://lists.denveronline.net/mailman/options/jdom-interest/youraddr@yourhost.com">http://lists.denveronline.net/mailman/options/jdom-interest/youraddr@yourhost.com</a></blockquote>
<pre>--
Best Regards
Sanjeev Verma
Sun ONE App Server Migration Consultant
Web Services, Tools and Migration Tools
Market Development Engineering</pre>
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