Embed files into XSSF sheets in Excel, using Apache POI

Question

I have found kiwiwings answer to the question of how you can embed files into Excel using Apache POI, but unfortunately his answer only covers HSSF spreadsheets (the XLS for

Answer 1

I've applied a patch via #60586, so embedding is now much easier. The following snipplet is taken from the corresponding JUnit test.

Workbook wb1 = new XSSFWorkbook();
Sheet sh = wb1.createSheet();
int picIdx = wb1.addPicture(getSamplePng(), Workbook.PICTURE_TYPE_PNG);
byte samplePPTX[] = getSamplePPT(true);
int oleIdx = wb1.addOlePackage(samplePPTX, "dummy.pptx", "dummy.pptx", "dummy.pptx");

Drawing pat = sh.createDrawingPatriarch();
ClientAnchor anchor = pat.createAnchor(0, 0, 0, 0, 1, 1, 3, 6);
pat.createObjectData(anchor, oleIdx, picIdx);