migration - Deploying a Jersey webapp on Jboss AS 7

Question

Currently running some webapps on Jboss AS 4/5 and I am testing migration to jboss7. When I try to deploy a jersey based webapp on JBoss AS 7 (full profile with standalone-preview config file), I get:

org.jboss.as.server.deployment.DeploymentUnitProcessingException: Only one JAX-RS Application Class allowed.

I've done a bit of hunting around on it and found that RestEasy is the default JAX-RS implementation embedded into Application Server. Posts like http://community.jboss.org/message/579996 and https://issues.jboss.org/browse/JBAS-8830) mention that the RestEasy deployer takes over.

In AS 6, it seems easier to remove the deployer whereas I have not seen any solutions for AS 7.

Answer 1

it has already been mentioned in this post : https://community.jboss.org/message/744530#744530 , you can just ask the resteasy module to not scan for other JAX RS implementations in your webapp; just add this to your web.xml :

<context-param>
    <param-name>resteasy.scan</param-name>
    <param-value>false</param-value>
</context-param>
<context-param>
    <param-name>resteasy.scan.providers</param-name>
    <param-value>false</param-value>
</context-param>
<context-param>
    <param-name>resteasy.scan.resources</param-name>
    <param-value>false</param-value>
</context-param>

worked fine for me