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From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: Tomcat 5.5.17 migration to 6.0.53
Date Mon, 23 Jul 2018 18:28:54 GMT
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David,

On 7/23/18 12:51 PM, David Babooram wrote:
> Hello
> 
> I have begun a migration from 5.5 to 6. Yes I know 6 is EOL but
> the migration from 5.5 to 6 has some more documentation compared to
> 5.5 to the latest version.
> 
> I followed the standard migration of libs and classes from /common 
> /shared etc to the new /lin directory for 6..
> 
> The server engine runs and I can see the examples web pages come
> up.
> 
> When I migrated my production webapps to the 6.0 instance however
> I get the following error.
> 
> HTTP Status 500 - java.lang.LinkageError: loader constraint 
> violation: when resolving interface method 
> "javax.servlet.jsp.JspApplicationContext.getExpressionFactory()Ljavax/
el/ExpressionFactory;"
>
> 
the class loader (instance of org/apache/jasper/servlet/JasperLoader)
> of the current class, org/apache/jsp/index_jsp, and the class
> loader (instance of org/apache/catalina/loader/StandardClassLoader)
> for resolved class, javax/servlet/jsp/JspApplicationContext, have 
> different Class objects for the type javax/el/ExpressionFactory
> used in the signature
> 
> Any insight on this is welcomed.
> 
> I notice in that my app has its own lib directory, does this means 
> that there is a conflict with the lib files from the base
> directory ?

Possibly. What files do you have in your app's WEB-INF/lib directory?

- -chris
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