When using Stanbol you get this warning on the console:
A servlet POST request, to the URI http://localhost:8080/stanbol/entityhub/sites/find, contains form parameters in the request body but the request body has been consumed by the servlet or a servlet filter accessing the request parameters. Only resource methods using @FormParam will work as expected. Resource methods consuming the request body by other means will not work as expected.
Hopefully, this is not a problem and we only need to get rid of this warning message.