Access Request object from REST

To elaborate on @dfa's answer for alternatives, I find this to be simpler than specifying the variable on each resource method signature:

public class MyResource {

  @Context
  private HttpServletRequest httpRequest;

  @GET  
  public Response foo() {  
    httpRequest.getContentType(); //or whatever else you want to do with it
  }
}

On JAX-RS you must annotate a Request parameter with @Context:

 @GET  
 public Response foo(@Context Request request) {

 }

Optionally you can also inject:

• UriInfo
• HttpHeaders
• SecurityContext
• HttpServletRequest