adding jar files to classpath

I have a web Application configured in Rational Application Developer that interfaces with the BIRT Reporting Engine API. I am getting the following error when the web application Java code tries to execute the reporting engine API.
Caused by: java.lang.ClassNotFoundException: org.eclipse.birt.data.engine.core.DataException
at java.net.URLClassLoader.findClass(URLClassLoader.java:423)
at com.ibm.ws.bootstrap.ExtClassLoader.findClass(ExtClassLoader.java:150)
at java.lang.ClassLoader.loadClass(ClassLoader.java:653)
at com.ibm.ws.bootstrap.ExtClassLoader.loadClass(ExtClassLoader.java:90)
at java.lang.ClassLoader.loadClass(ClassLoader.java:619)
at com.ibm.ws.classloader.ProtectionClassLoader.loadClass(ProtectionClassLoader.java:62)
at com.ibm.ws.classloader.ProtectionClassLoader.loadClass(ProtectionClassLoader.java:58)
at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:509)
at java.lang.ClassLoader.loadClass(ClassLoader.java:619)
I have referenced all the required jar files for BIRT in the web application class path. Do I need to add the jar files any where else so that BIRT URLClassLoader can find the required classes.

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Comments

JasonW

Do you have your engine setup like:
http://wiki.eclipse.org/Servlet_Example_(BIRT)_2.1

Jason

kumarisam

<blockquote class='ipsBlockquote' data-author="'JasonW'" data-cid="74390" data-time="1299530793" data-date="07 March 2011 - 01:46 PM">
Do you have your engine setup like: 
<a class='bbc_url' href='http://wiki.eclipse.org/Servlet_Example_(BIRT)_2.1'>http://wiki.eclipse.org/Servlet_Example_(BIRT)_2.1</a> 
 
Jason </blockquote>
 
 
By doing what is suggested on the link you mentioned, I was able to get pass that class path error for BIRT jar files that is in the web application class path. But I am still getting "Exception created : java.lang.NoClassDefFoundError" for projects referenced by web application. 
RevenueByAreaData class is in a Java utility project that is referenced by the web application. 
I even created a jar file for the Java utility project and add it to the class path using the below line. 
But still having the same issue. 
 
engineConfig.getAppContext().put(EngineConstants.WEBAPP_CLASSPATH_KEY, "c:/BIRT/lib/jlog.jar;c:/BIRT/lib/odb_reports_engine.jar"); 
 
[3/8/11 11:47:55:351 CST] 0000002a servlet E com.ibm.ws.webcontainer.servlet.ServletWrapper service SRVE0068E: Uncaught exception created in one of the service methods of the servlet action in application cmsweb1_ear. Exception created : java.lang.NoClassDefFoundError: com.ibm.ezposte.emk.reportingengine.model.RevenueByAreaData 
at com.ibm.ezposte.emk.odb.web.actions.RevenueByAreaAction.execute(RevenueByAreaAction.java:146) 
at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58) 
at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67) 
at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51) 
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)

JasonW

Are you setting the parent classloader for the engine?
engineConfig.getAppContext().put(EngineConstants.APPCONTEXT_CLASSLOADER_KEY, theclassthatlaunchestheengine.class.getClassLoader());

Jason