Accessing context-param values from within a RESTEasy provider

I have created a MessageBodyReader/MessageBodyWriter that needs to 开发者_JAVA技巧read a configuration value. Ideally I'd like this to be held in the web.xml as a context-param. Is there any way that a RESTEasy provider can access context params? Is there any type that I can inject using @Context that will allow me to get context-param values? I haven't been able to find one.

Alternatively, is there a better way to provide configuration values to a provider? I'd like to avoid having to use a system property.

---

In answer to my own question, one solution is to use Spring.

When RESTEasy beans are created via the the Spring context, one can easily provide configuration values in the application-context.xml. It's even possible to use context-param values from the web.xml using the ServletContextPropertyPlaceholderConfigurer.