Download and decompress blob

Question

Hi! I have a Servlet that retrieves a blob form a DB (GZIP file) and download it, here's the code:
isZip = new GZIPInputStream (blob.getBinaryStream());
out=response.getOutputStream();
//4.-Preparamos el contentType del Servlet, forzado a download.
response.reset();
response.setContentType("application/force-download");
int num=is.read();
response.setHeader("Content-Disposition","attachment; filename=\"" + "melon.gz" + "\"");
while(num!=-1){
out.print(num); //out is a ServletOutputStream
num=is.read();
response.flushBuffer();
//Close and flush all the streams.
But it doesn't work well, the Zip doesn't recognize the file like a gzip file, can u help me?

Answer 1

Ops, I was reading for an inputStream is and form a isZip.