Cannot get an image from inputStream

First thing, I'm new in jee and rest services, I'm developing an application in java that receive an image from a client and stores it in a glassfish db. Then it can be returned. I´m having a problem gettin the image from the input stream, I tried ImageIO.read(inputStream) like seeing in many questions here, but it´s allways return null. And if I convert it to bytes, save it, recoverted to image file from the bytes the image its shown corrupted. Aparently im saving rubish with the image when i convert that way the inputStream.

How can I extract the image correctly from the inputStream? There is another way to send it?

Code from the app side:

     BufferedImage image = ImageIO.read(imagen);
     @POST
     @Path("subir/{usuario}/{nombreImagen}")
     public Response obtenerImagen(@PathParam("usuario") String usuario,@           PathParam("nombreImagen") String nombreImagen, InputStream imagen) throws IOException {
    BufferedImage image = ImageIO.read(imagen);