[keycloak-user] ClassCastException on UsersResource search API

[Haim Vana]

We have rest easy dependencies – see below, the problem is that in addition to it we also have Jersey dependency, and at runtime the RuntimeDelegate picks up the Jersey implementation.

<dependency>
   <groupId>org.jboss.resteasy</groupId>
   <artifactId>resteasy-client</artifactId>
</dependency>
<dependency>
   <groupId>org.jboss.resteasy</groupId>
   <artifactId>resteasy-jackson2-provider</artifactId>
</dependency>
<dependency>
   <groupId>org.jboss.resteasy</groupId>
   <artifactId>resteasy-multipart-provider</artifactId>
</dependency>


Haim.

From: Stian Thorgersen [mailto:sthorger at redhat.com]
Sent: Wednesday, June 15, 2016 1:58 PM
To: Haim Vana <haimv at perfectomobile.com>
Cc: keycloak-user at lists.jboss.org
Subject: Re: [keycloak-user] ClassCastException on UsersResource search API

Admin client lib requires RestEasy. If you're using WildFly or JBoss EAP you can create a module for the admin client library and add RestEasy dependencies to that.

On 15 June 2016 at 08:44, Haim Vana <haimv at perfectomobile.com<mailto:haimv at perfectomobile.com>> wrote:
Hi,

We are using KeyCloak 1.9.3, when trying to search a user with the API (usersResource.search) we are getting ClassCastException.

The problem is that KeyCloak resteasy (version 3.0.16) ClientWebTarget is explicitly using ResteasyUriBuilder and at runtime we are getting our Jersey JerseyUriBuilder.

Any idea how to overcome it ? assuming we can't remove the Jersey dependency.

Exception stack trace:
java.lang.ClassCastException: org.glassfish.jersey.uri.internal.JerseyUriBuilder cannot be cast to org.jboss.resteasy.specimpl.ResteasyUriBuilder
                at org.jboss.resteasy.client.jaxrs.internal.ClientWebTarget.queryParamNoTemplate(ClientWebTarget.java:289)
                at org.jboss.resteasy.client.jaxrs.internal.proxy.processors.webtarget.QueryParamProcessor.apply(QueryParamProcessor.java:23)
                at org.jboss.resteasy.client.jaxrs.internal.proxy.processors.webtarget.QueryParamProcessor.apply(QueryParamProcessor.java:12)
                at org.jboss.resteasy.client.jaxrs.internal.proxy.processors.AbstractCollectionProcessor.buildIt(AbstractCollectionProcessor.java:76)
                at org.jboss.resteasy.client.jaxrs.internal.proxy.processors.webtarget.AbstractWebTargetCollectionProcessor.build(AbstractWebTargetCollectionProcessor.java:22)


Thanks,
Haim.
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