java - Playframework 2.5.0 : Unable to serve server-side generated zip file -

my playframework 2.5.0 application has serve temporary created zip file. create , fulfill zip file in /tmp directory, without problem (i can open in place , extract contained files).

but file sent client seems truncated , can't opened.

string temppath = "/tmp/" + label + ".zip";  file zipfile = new file(temppath); zipfile.deleteonexit(); zipoutputstream zos = null;  try {     zos = new zipoutputstream(new bufferedoutputstream(new fileoutputstream(zipfile)));      (/* loops through files zip */) {         inputstream = methodtogetthedocument();         zipentry zipentry = new zipentry(document.getlabel());         zos.putnextentry(zipentry);         byte[] bytes = new byte[2048];         int count = is.read(bytes);         while (count > -1) {             zos.write(bytes, 0, count);             count = is.read(bytes);         }         is.close();         zos.closeentry();     }     return ok(zipfile); } catch (exception e) {     return badrequest("bad request"); } {     try {         zos.close();     } catch (exception e) {         e.printstacktrace();     } } 

i return classical result object... problem ?

you have "close" zip file using zos.close() before return ok(zipfile)