Jersey Server Binary File

To serve a binary file such as a ZIP file with a REST service in Jersey, use the following:

@GET @Produces("application/zip") @Path("{itemId}") public Response downloadItem(@PathParam("itemId") int itemId){    String fileName = "item" + itemId + ".zip";    StreamingOutput streamingOutput = new StreamingOutput(){        public void write(OutputStream output) throws IOException, WebApplicationException {            // write data to output stream here        }            };        return Response.ok(streamingOutput, "application/zip").header("content-disposition","attachment; filename = "+fileName).build(); }