Alex Bitman commented on SM-3020:

your problem is that xerces comes from different classloader. 
Your bundle should not export these package: just import or private. 
As the resolver uses xerces, they should go in the same classloader (so 
from lib/endorsed). 
Let me double check your use case. 
Regards ,Alex

> NoClassDefFoundError using Xerces / XmlResolver
> -----------------------------------------------
>                 Key: SM-3020
>                 URL: https://issues.apache.org/jira/browse/SM-3020
>             Project: ServiceMix
>          Issue Type: Bug
>          Components: assemblies
>    Affects Versions: 6.1.0
>            Reporter: Jean-Baptiste Martin
>            Priority: Major
>             Fix For: 6.1.5, 7.0.2
> cf. 
> http://servicemix.396122.n5.nabble.com/NoClassDefFoundError-using-Xerces-XmlResolver-td5723624.html
> In a nutshell, Xerces bundle wants to use a class 
> (org/apache/xml/resolver/CatalogManager) contained in XmlResolver bundle but 
> can't reach it (due to classloading mechanism).
> The issue can be resolved if XmlResolver's classes are loaded by the same 
> classloader as Xerces's one (the bootstrap / primordial classloader). In our 
> case, this consists in : 
>      - Adding XmlResolver jar file in <SMX_HOME>/lib/endorsed/
>      - Exporting 'org.apache.xml.resolver' to the bootdelegation packages 
> (via <SMX_HOME>/etc/config.properties file)
> Should this solution be the default configuration ?

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