jsp compilation fails depending on how WEB-INF classes are build

[Fabian Panthen]

Hello,

not sure whether here is the right place to post, but i give it a shot...

I have a webapp with JSP's using some classes from WEB-INF/classes in a 
declaration block (<%!%>),
running in tomcat 6 on jdk1.6.0_14.

The problem is such,

if I compile the classes in WEB-INF/classes using eclipse Galileo 
everything runs fine.
But if I compile those same classes using ANT, jsp comilation in tomcat 
fails with the following stack trace:

org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException
     at 
org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader.<init>(ClassFileReader.java:342) 

     at 
org.apache.jasper.compiler.JDTCompiler$1.findType(JDTCompiler.java:206)
     at 
org.apache.jasper.compiler.JDTCompiler$1.findType(JDTCompiler.java:178)
     at 
org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.askForType(LookupEnvironment.java:122) 

     at 
org.eclipse.jdt.internal.compiler.lookup.PackageBinding.getTypeOrPackage(PackageBinding.java:178) 

     at 
org.eclipse.jdt.internal.compiler.lookup.Scope.getPackage(Scope.java:2101)
     at 
org.eclipse.jdt.internal.compiler.ast.QualifiedTypeReference.getTypeBinding(QualifiedTypeReference.java:69) 

     at 
org.eclipse.jdt.internal.compiler.ast.TypeReference.resolveType(TypeReference.java:134) 

     at 
org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding.resolveTypeFor(SourceTypeBinding.java:1273) 

     at 
org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding.fields(SourceTypeBinding.java:604) 

     at 
org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding.faultInTypesForFieldsAndMethods(SourceTypeBinding.java:582) 

     at 
org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope.faultInTypes(CompilationUnitScope.java:431) 

     at 
org.eclipse.jdt.internal.compiler.Compiler.process(Compiler.java:616)
     at 
org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:392)
     at 
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:429)
     at org.apache.jasper.compiler.Compiler.compile(Compiler.java:334)
     at org.apache.jasper.compiler.Compiler.compile(Compiler.java:312)
     at org.apache.jasper.compiler.Compiler.compile(Compiler.java:299)
     at 
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:589) 

     at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317) 

     at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
     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:233) 

     at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 

     at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 

     at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 

     at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 

     at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
     at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
     at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) 

     at 
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
     at java.lang.Thread.run(Thread.java:619)

This happens as well under tomcat 5.5.
Changing the ANT build to use the same JDT compiler as eclipse did not 
change the problem.
Using javap I checked both compiled versions of the classes and they do 
have the same major version.

Any hint towards what might be the problem here is greatly appreciated.

Thanks a lot,

fabian

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