[jboss-jira] [JBoss JIRA] (AS7-5877) ClassCastException with ResteasyProviderFactory when including RESTEasy in two WARs

[Stuart Douglas (JIRA)]

     [ https://issues.jboss.org/browse/AS7-5877?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stuart Douglas resolved AS7-5877.
---------------------------------

    Resolution: Rejected


If you want to package resteasy you have two option. 

You can use the <exclude-subsystem> element in jboss-deployment-structure.xml that is documented here: https://docs.jboss.org/author/display/AS72/Class+Loading+in+AS7 (this was added in 7.1.2).

Alternatively you can just remove the JAX-RS subsystem from the standalone.xml config.

Just removing the dependency is not enough, as the JAX-RS deployers will still operate on your deployment. 
                
> ClassCastException with ResteasyProviderFactory when including RESTEasy in two WARs
> -----------------------------------------------------------------------------------
>
>                 Key: AS7-5877
>                 URL: https://issues.jboss.org/browse/AS7-5877
>             Project: Application Server 7
>          Issue Type: Bug
>          Components: Class Loading, REST
>    Affects Versions: 7.1.1.Final
>            Reporter: Eric Wittmann
>            Assignee: David Lloyd
>
> Found what I think may be a classloading issue while working on the S-RAMP project.
> We include RESTEasy in our WARs because we want a single WAR that runs in multiple containers *and* because we need a newer version of RESTEasy.  If you deploy two WARs that both package RESTEasy, then you will get a ClassCastException.  See the linked RESTEasy Jira issue I entered for this problem (I'm not sure if it's a bug in resteasy or jboss).
> Ultimately it seems that a class is loaded from the RESTEasy module included in JBoss AS, despite that module being excluded via the jboss-deployment-structure.xml file.
> A sample maven project showing this problem is included on the linked RESTEasy issue.

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