This is what the guide says
http://docs.jboss.org/resteasy/docs/1.0.0.GA/userguide/html/Installation_Configuration.html
Option Name : resteasy.resources
Default Value : no default
Description : A comma delimited list of fully qualified JAX-RS resource class names you want to register
So the immediate comment would be
<param-value>com.project.web.resource</param-value>
being the package name only wouldn't be good enough.
You should, in the least, append it with the class name and, if needed, make it a comma separated list of fully qualified (with package name) class names.