REST WebService to serve images dynamically?

Consider 3 Jpeg files

• image1.jpg
• image2.jpg
• image3.jpg

For a given URL and a set of parameters, I would like the s开发者_如何学Cerver to select and return one of those images.

I'm working in a JEE6 environment. What approach would you recommend?

• A JSF redirect?
• A REST WebService?
• A good old servlet?
• ... ?

Any suggestions welcome!

This is what I brewed so far:

import org.apache.commons.io.IOUtils;

@Path("/item")
public class MyResource {

  @GET
  @Path("/object/{id}")
  @Produces("image/jpeg")
  public byte[] getImageRepresentation(@PathParam("id") int id) {
     byte[] bytes = null;
     switch (id) {
        case 1: bytes = IOUtils.toByteArray(this.getClass().getResourceAsStream("/img/image01.jpg"));break;
        case 2: bytes = IOUtils.toByteArray(this.getClass().getResourceAsStream("/img/image02.jpg"));
      }
      return bytes;
  }

}

Still curious about alternative approaches! Thank you! J. :-)