apache poi - how to get resource in a jar file ? (poi && image) -

i using poi apache generate excel file, have add picture file problems when export project runnable jar, not working.

inputstream = exceltools.class.getclassloader().getresourceasstream( "./ensao/pfa/opendelib/resources/logoopen.jpg" );      byte[] bytes = ioutils.tobytearray(is);     int pictureidx = wb.addpicture(bytes, workbook.picture_type_jpeg);     is.close();      drawing drawing = sheet.createdrawingpatriarch();     hssfclientanchor anchor = new hssfclientanchor(40, 10, 65, 20,             (short) 0, 0, (short) 0, 0);     anchor.setanchortype(1);      picture pict = drawing.createpicture(anchor, pictureidx);     pict.resize(); 

the problem launched line :

byte[] bytes = ioutils.tobytearray(is); 

problem in bad path image. ide configured environment ($classpath, file path, etc) in 1 manner, real running operate other environment. find working directory print debug pwd analog.

this links may useful: http://www.java-forums.org/new-java/434-how-can-i-get-current-directory.html http://www.mkyong.com/java/how-to-get-the-current-working-directory-in-java/ getting current working directory in java