I don't think you can get both a writer and a stream at the same time

HCL Notes/Domino 8.5 Forum (includes Notes Traveler)

Subject:

Hi Simon,

Have you found a solution yet?

I'm not sure, but I believe that I somewhere read that you can't get both a writer and a stream at the same time. You have to choose, so maybe you should try the following code instead:

if (IWantAWriter == true) {
var rw = facesContext.getResponseWriter();
rw.write("We have a writer");
} else {
var rs = facesContext.getResponseStream();
rs.write("We have a stream");
}

Feedback response number WEBB7RTC5G created by ~Ted Xanjumilyoni on 05/07/2009