ApplicationContext and ServletContext within GRAILS services

Q: How do I get a resource from the servletContext or applicationContext from a service?

To get the ApplicationContext, have your service implement ApplicationContextAware and declare an 'applicationContext' field. Then from within your service:

def resource = applicationContext.getResource("foo")

Accessing the Servlet Context:

import org.codehaus.groovy.grails.web.context.ServletContextHolder as SCH
def servletContext = SCH.servletContext