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https://issues.apache.org/jira/browse/CXF-4686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13526453#comment-13526453
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Sergey Beryozkin commented on CXF-4686:
---------------------------------------
Do you have ServiceMix jsr311-api-1.1.1 spec installed ? Needed for CXF 2.6.x
to work
> NoClassDefFoundError for javax.ws.rs.core.MediaType in OSGi environment
> -----------------------------------------------------------------------
>
> Key: CXF-4686
> URL: https://issues.apache.org/jira/browse/CXF-4686
> Project: CXF
> Issue Type: Bug
> Components: JAX-RS
> Affects Versions: 2.6.2
> Environment: Apache Felix
> Reporter: Konrad Windszus
>
> I try to create a JAX-RS client from bundle a with the help of an annotated
> class like
> {code}
> // Jax-RS client
> ProductClientProxy productProxy = JAXRSClientFactory.create(<url>,
> ProductClientProxy.class);
> {code}
> CXF and JAX-RS are both exposed from another bundle (bundle b). The problem
> is during runtime I get the following exception
> {noformat}
> java.lang.NoClassDefFoundError: javax.ws.rs.core.MediaType not found by
> <bundle a> [368]
> at $Proxy205.<clinit>(Unknown Source)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
> at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:588)
> at
> org.apache.cxf.common.util.ProxyHelper.getProxyInternal(ProxyHelper.java:45)
> at org.apache.cxf.common.util.ProxyHelper.getProxy(ProxyHelper.java:50)
> at
> org.apache.cxf.jaxrs.client.JAXRSClientFactoryBean.createWithValues(JAXRSClientFactoryBean.java:302)
> at
> org.apache.cxf.jaxrs.client.JAXRSClientFactoryBean.create(JAXRSClientFactoryBean.java:243)
> at
> org.apache.cxf.jaxrs.client.JAXRSClientFactory.create(JAXRSClientFactory.java:86)
> at
> org.apache.cxf.jaxrs.client.JAXRSClientFactory.create(JAXRSClientFactory.java:72)
> at
> org.apache.cxf.jaxrs.client.JAXRSClientFactory.create(JAXRSClientFactory.java:49)
> at <code line listed above>
> {noformat}
> The problem is that CXF tries to instanciate a Client in
> JAXRSClientFactoryBean (line 302, leveraging the classloader of the client
> bundle (bundle a), not with the classloader of the CXF bundle(bundle b)).
> Unfortunately the classloader of the bundle a does not import the package
> javax.ws.rs.core, and therefore this NoClassDefFoundError is thrown.
> As a workaround we explicitly import the package javax.ws.rs.core in bundle
> a. Although I don't know how to fix it from your site, it would be great if
> the necessary packages would automatically detected (in this case by the
> maven-bundle-plugin) or you use another classloader to load the
> org.apache.cxf.jaxrs.client.Client interface, or you remove all the
> dependencies on other packages from the Client interface.
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