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faces servlet exception thrown noClassDefinationFounderror com.sun.el.util.messagefactory

 
vai joshi
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i am using jsf with spring and hibernate. my index page loads successfully but when i clicks on any link on the index page i ll face following error:

faces servlet exception thrown noClassDefinationFounderror com.sun.el.util.messagefactory initilizationFailure

my all jar are inside the lib folder. with the jsf i am using custon tags.
 
Tim Holloway
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There isn't a lot of information to work with here. However, one thing that's important to keep in mind is that EL was not built into the Tomcat server until Tomcat 6. Webapps for Tomcat 5.5 and earlier had to supply their own EL jars in their WEB-INF/lib directories.

It is therefore possible that the app was built for an older server and you are experiencing class conflicts with the EL classes in your server's built-in libraries.
 
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