Get document from GET request - http-get

Question

I need your help:
I have the following method
#Path("/download")
public class FileDownloadService {
#GET
public Response downloadFile(#QueryParam("filenet_id") String filenet_id, #QueryParam("version") String version) {
...
Document document = (Document) cmisObject;
return Response.ok(document, MediaType.APPLICATION_OCTET_STREAM).build();
}
and I want to get the document throught HTTP GET, I tried to write this code but I don't know how to get it, "output" don't conatains it:
URIBuilder builder = new URIBuilder();
builder.setScheme("http").setHost("localhost:8080").setPath("/filenetintegration/rest/download")
.setParameter("filenet_id", filenet_id)
.setParameter("version", version+".0");
URI uri = builder.build();
HttpGet httpget = new HttpGet(uri);
System.out.println(httpget.getURI());
HttpURLConnection urlConnection = (HttpURLConnection) new URL(uri.toString()).openConnection();
urlConnection.connect();
BufferedReader br = new BufferedReader(new InputStreamReader((urlConnection.getInputStream())));
String output;
while ((output = br.readLine()) != null) {
System.out.println(output);
}
Edit:
maybe the problem is on this line, it don't put the document inside the response:
return Response.ok(document, MediaType.APPLICATION_OCTET_STREAM).build();

Answer 1

You need something like this on the server side:
Document document = (Document) cmisObject;
ContentStream contentStream = document.getContentStream();
final InputStream stream = contentStream.getStream();
StreamingOutput output = (OutputStream out) -> {
try {
int b;
byte[] buffer = new byte[64*1024];
while ((b = stream.read(buffer)) > -1) {
out.write(buffer, 0, b);
}
} finally {
try {
stream.close();
} catch (IOException ioe) {}
}
};
return Response.ok(output, contentStream.getMimeType()).build();