Use header in addition to method to route request to annotated method

Question

I wonder if it\'s possible with JAX-RS to route a request using an header in addition to the HTTP method. In fact, I can\'t find out the way to do that.

I thought ab

Answer 1

Just throw in another option. You can also use Sub-resource locators, which give us some control over the chosen resource (and is part of the JAX-RS spec). For example

@Path("contacts")
public class ContactsResource {

    @Path("/")
    public AbstractHeaderResource doSomething(@HeaderParam("X-Header") String xHeader) {
        if ("RequiredValue".equals(xHeader)) {
            return new WithHeaderResource();
        }
        return new WithOutHeaderResource();
    }

    public static abstract class AbstractHeaderResource {
        @POST
        @Consumes(MediaType.APPLICATION_JSON)
        public abstract Response doSometing(Contact contact);
    }

    public static class WithHeaderResource extends AbstractHeaderResource {
        @Override
        public Response doSometing(Contact contact) {
            return Response.ok("*** With Header ***").build();
        }
    }

    public static class WithOutHeaderResource extends AbstractHeaderResource {
        @Override
        public Response doSometing(Contact contact) {
            return Response.ok("*** WithOut Header ***").build();
        }
    }
}

Test

C:\>curl -v -X POST  
         -d "{\"name\":\"Peeskillet\"}" 
         -H "X-Header:RequiredValue" 
         -H "Content-Type:application/json"
         http://localhost:8080/contacts 

*** With Header ****

C:\>curl -v -X POST  
         -d "{\"name\":\"Peeskillet\"}"  
         -H "Content-Type:application/json"
         http://localhost:8080/contacts 

*** WithOut Header ****

The resource methods don't have to accept the same parameter type. I did it just for brevity. You can have the sub resource classes extend an empty abstract class or interface (just for typing), and create the methods however you want