We don't need the eclipse classes. Maybe remove the jdt-related .jar?

Yes, after removing jasper-jdt.jar you get a class not found exception as
something else try to explicitly load the jdt compiler stuff I think.

Please add the ClassNotFoundException to the report.

sorry, jdt errors came elsewhere when trying to fiddle with the compiler (not
sure what can be done with that type of configuration)

Tomcat 6.0.2

run Component Showcase out of the box:
**************************************

SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.LinkageError: loader constraints violated when linking
javax/el/ExpressionFactory class
at org.apache.jsp.index_jsp._jspInit(index_jsp.java:20)
at org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:80)
at
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:163)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:326)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:212)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:818)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:624)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)

replace el-api.jar & jasper-el.jar in $CATALINA_HOME/lib with ICEfaces 1.5.1
versions el-api.jar & el-ri.jar:
*************************************************************************************************************

SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.NoClassDefFoundError: org/apache/el/ExpressionFactoryImpl
at
org.apache.jasper.JspCompilationContext.getServletClassName(JspCompilationContext.java:351)
at
org.apache.jasper.JspCompilationContext.getClassFileName(JspCompilationContext.java:491)
at org.apache.jasper.compiler.Compiler.isOutDated(Compiler.java:389)
at org.apache.jasper.compiler.Compiler.isOutDated(Compiler.java:342)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:562)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:314)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:212)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:818)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:624)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)

The following changes worked for Tomcat 6.0 from a .tar.gz install on the Mac with the auctionMonitor:

• remove el-api.jar (it is now included with Tomcat)
• remove xercesImpl.jar and xml-apis.jar (conflict with tomcat-provided version)

Philip, can you verify that these steps are sufficient and close the bug?

verified