How to pass a reference to a file from Java in xpages -

i sorry english. use translator. there code java. reads database of field posgresql bytea binary data , stores in file:

<code>     public static void savetofile() throws ioexception {     try {     connection conn = jdbcutil.getconnection(facescontext.getcurrentinstance(), "derby1");             resultset rs = conn.createstatement().executequery(                             "select files test_goverment who='d'");             byte[] imgbytes = null;             if (rs != null) {                 while (rs.next()) {                     imgbytes = rs.getbytes(1);                 }                 fileoutputstream os = new fileoutputstream("c:\\samoutput.txt");                 os.write(imgbytes);                 os.flush();                 os.close();             }             rs.close();             conn.close();         } catch (sqlexception e) {             e.printstacktrace();         enter code here}     } </code> 

how transfer file download user in xpages. , remove after downloading.

you want transfer query result browser client download , don't want save it.

instead of saving query result file first , transfer download later
can stream content direct xpage's response this:

public static void downloadfile() throws ioexception {     try {         facescontext facescontext = facescontext.getcurrentinstance();         connection conn = jdbcutil.getconnection(facescontext, "derby1");         resultset rs = conn.createstatement().executequery(                             "select files test_goverment who='d'");         byte[] imgbytes = null;         if (rs != null) {             while (rs.next()) {                 imgbytes = rs.getbytes(1);             }             externalcontext extcon = facescontext.getexternalcontext();             xsphttpservletresponse response = (xsphttpservletresponse)extcon.getresponse();             response.reset();             response.setcontenttype("text/plain");             response.setheader("content-disposition", "attachment; filename=output.txt");             response.setheader("cache-control", "no-cache");             outputstream os = response.getoutputstream();             os.write(imgbytes);             os.flush();             facescontext.responsecomplete();             rs.close();                       }         conn.close();     } catch (sqlexception e) {         e.printstacktrace();     } } 

you might have @ xsnippet. shows how present files download in case want/have stay files instead streams.