[jboss-user] [Javassist user questions] - ClassFormatError on Websphere 6.1 on iSeries

[soza]

Hi 

We have Seam 1.2.1GA POJO app that works fine on Websphere 6.1 on Windows. However the same EAR file fails on Websphere 6.1 on IBM's iSeries server. javassist throws a ClassFormatError when loading the the first Seam component for the application. Here's the exception...

Caused by: java.lang.RuntimeException: by java.lang.ClassFormatError: [PACKAGE name withheld]ServiceImpl_$$_javassist_0 0000 6305 
at java.lang.Throwable.(Throwable.java:218) 
at java.lang.RuntimeException.(RuntimeException.java:61) 
at javassist.util.proxy.ProxyFactory.createClass3(ProxyFactory.java:365) 
at javassist.util.proxy.ProxyFactory.createClass2(ProxyFactory.java:323) 
at javassist.util.proxy.ProxyFactory.createClass(ProxyFactory.java:274) 
at org.jboss.seam.Component.createProxyFactory(Component.java:1979) 
at org.jboss.seam.Component.getProxyFactory(Component.java:1154) 
at org.jboss.seam.Component.wrap(Component.java:1145) 
at org.jboss.seam.Component.instantiateJavaBean(Component.java:1134) 
at org.jboss.seam.Component.instantiate(Component.java:1088) 
at org.jboss.seam.Component.newInstance(Component.java:1736) 
... 73 more 
Caused by: javassist.CannotCompileException: by java.lang.ClassFormatError: [PACKAGE name withheld]ServiceImpl_$$_javassist_0 0000 6305 
at java.lang.Throwable.(Throwable.java:196) 
at java.lang.Exception.(Exception.java:41) 
at javassist.CannotCompileException.(CannotCompileException.java:73) 
at javassist.util.proxy.FactoryHelper.toClass(FactoryHelper.java:181) 
at javassist.util.proxy.ProxyFactory.createClass3(ProxyFactory.java:353) 
... 81 more 
Caused by: java.lang.ClassFormatError: [PACKAGE name withheld]ServiceImpl_$$_javassist_0 0000 6305 
at java.lang.Throwable.(Throwable.java:196) 
at java.lang.Error.(Error.java:49) 
at java.lang.ClassFormatError.(ClassFormatError.java:35) 
at java.lang.ClassLoader.defineClass(ClassLoader.java:651

Here's the interesting part...typically ClassFormatError would also provide the message indicating the cause for failure, but in this case it just displays a sequence of numbers...

Caused by: javassist.CannotCompileException: by java.lang.ClassFormatError: [PACKAGE name withheld]ServiceImpl_$$_javassist_0 0000 6305 

Both on windows and the iSeries box we are using IBM's Java 1.5 JRE.  Also i'm using javassist 3.4. Anybody can shed any light on what the numbers are?

Thanks.

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