Get byte array file from Restful web service to android

Question

I am new here and I want first to ask excuses if I don't get to express very well myself or for my English!!

In fact, I'm working on a project that is supposed to get byte array from a Firebird database and represent them on android. So I decided to use a restful webservice with a methode that get these daten from database and then use android client to retrieve them.

How can I please write these bytes in a text file and then get this using an android client!

The methode on web service looks like this:

 @GET
    @Path("daten/{id}")
    @Produces("text/plain")
  *// Instead of byte[] I wanted to return a file because this doesn't work*
    public byte[] getDaten(@PathParam("id") String id){
      Tbpatereignis res= (Tbpatereignis) em.createQuery("select erg from Tbpatereignis as erg where erg.vcereignis= :ekgtyp and erg.vcpatsur.vcsurrogat= :id ").setParameter("ekgtyp", "UREKG").setParameter("id", id).getResultList().get(0);

      return res.getBldivers();
    }

How can I then retreive this file from a restful web service and use it later on android?

Thanks for ur help!

Answer 1

you should use @Produces("application/octet-stream") not @Produces("text/plain"). In android client you can use httpclient or URLConnection to issue http request.

example code for URLConnection to get image from server:

URL url = new URL(urlStr);
URLConnection connection = url.openConnection();
Bitmap bmp=BitmapFactory.decodeStream(connection.getInputStream());