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From Abhishek Goel <>
Subject No Class def found error
Date Mon, 01 May 2006 20:21:09 GMT
Hi ,

I am using tomcat 5.5.17 along with jdk 1.5.

I am trying to define a Single sign on agent valve by using the following


   <Host name="" appBase="webapps"

       unpackWARs="true" autoDeploy="true"

       xmlValidation="true" xmlNamespaceAware="true">


   <Valve className="org.josso.tc55.agent.SSOAgentValve" debug="1"/> 




When I start my tomcat I am getting the following exception 


org.apache.tomcat.util.digester.Digester startElement

SEVERE: Begin event threw error

java.lang.NoClassDefFoundError: org/apache/catalina/Request

            at java.lang.Class.getDeclaredMethods0(Native Method)

            at java.lang.Class.privateGetDeclaredMethods(

            at java.lang.Class.privateGetPublicMethods(

            at java.lang.Class.getMethods(



When I remove the <Valve> tag my tomcat starts in a normal manner..


Please can anyone throw some light why this error is coming?







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