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From Greg Bondy <>
Subject Missing commons-el.jar causes NoClassDefFoundError org/apache/commons/el/ExpressionEvaluatorImpl
Date Thu, 06 May 2010 16:35:32 GMT
I am migrating from Tomcat 5.5.27 to 6.0.26. I found that an
application I have running on 5.5.27 fails on 6.0.26 with the error:
NoClassDefFoundError org/apache/commons/el/ExpressionEvaluatorImpl. I
found that the class in question is located in commons-el.jar on
5.5.27 and that jar is missing from 6.0.26.

The application is using Spring 3.0.1 and it appears that has a
dependency on org.apache.commons.el.ExpressionEvaluatorImpl. This is
the stack trace I am seeing:
nested exception is java.lang.NoClassDefFoundError:
     at org.springframework.web.context.request.AbstractRequestAttributesScope.get(
     at org.springframework.web.context.request.SessionScope.get(

If I copy commons-el.jar into the lib folder, the application works just fine.

Can you tell me the reason for removing commons-el.jar. Is there a
better remedy to the NoClassDefFoundError problem other them copying
the jar file from 5.5.27?

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