Marshalling Interfaces in JAX-RS
In Java, interfaces are used all over the place. Occasionally, these will need to be marshalled into XML/JSON. However, JAX-RS creates its own JAXBContext on its own. So, you may see exceptions like this…
Foo is an interface, and JAXB can't handle interfaces.
this problem is related to the following location:
at Foo
at public Foo[] Response.getFoo()
at Response
at org.jboss.resteasy.plugins.providers.jaxb.AbstractJAXBProvider.getMarshaller(AbstractJAXBProvider.java:160) [resteasy-jaxb-provider-3.0.6.Final.jar:]
at org.jboss.resteasy.plugins.providers.jaxb.AbstractJAXBProvider.writeTo(AbstractJAXBProvider.java:122) [resteasy-jaxb-provider-3.0.6.Final.jar:]
at org.jboss.resteasy.core.interception.AbstractWriterInterceptorContext.writeTo(AbstractWriterInterceptorContext.java:129) [resteasy-jaxrs-3.0.6.Final.jar:]
at org.jboss.resteasy.core.interception.ServerWriterInterceptorContext.writeTo(ServerWriterInterceptorContext.java:62) [resteasy-jaxrs-3.0.6.Final.jar:]
...Ugly, huh? Here's how to fix it…