[SOLVED] Resolving Template Variable in Resource Interface for Jersey Proxy Client

Resolving Template Variable in Resource Interface for Jersey Proxy Client

I have an issue resolving a class-level @Path annotation on a interface as such. I'm passing this interface to a WebResourceFactory in Jersey proxy client but it's immediately failing with an IllegalStateException.

The interface definition:

@Path("{entity}")
public interface EntityResource {
    @GET
    @Produces("*/xml")
    Entity get(@PathParam("view") EntityType view);
}

The exception I get:

Exception in thread "main" java.lang.IllegalStateException: The template variable 'entity' has no value
    at org.glassfish.jersey.client.JerseyWebTarget.getUri(JerseyWebTarget.java:135)
    at org.glassfish.jersey.client.JerseyWebTarget.request(JerseyWebTarget.java:215)
    at org.glassfish.jersey.client.JerseyWebTarget.request(JerseyWebTarget.java:60)
    at org.glassfish.jersey.client.proxy.WebResourceFactory.invoke(WebResourceFactory.java:322)

Any suggestions on how to resolve the "entity" template variable?

Solution

After doing some investigation in the jersey-proxy-client source code, I found that all template variables are resolved with annotations on the method declaration. There was an issue in how Apache CXF generated my interfaces. I have a mismatch between the @PathParam and the @Path. @Path uses "entity" and my @PathParam uses "view". They both need to be the same in order for the template variable to resolve correctly.