I want to remove word metadata from .doc files. My .docx files works fine
with XWPFDocument, but the following code for removing metadata fails for
large (> 1MB) files. For example using a 6MB .doc file with images, it
outputs a 4.5MB file in which some images are removed.
public static InputStream removeMetaData(InputStream inputStream) throws
IOException {
POIFSFileSystem fss = new POIFSFileSystem(inputStream);
HWPFDocument doc = new HWPFDocument(fss);
// it even fails on large files if you remove from here to 'until' below
SummaryInformation si = doc.getSummaryInformation();
si.removeAuthor();
si.removeComments();
si.removeLastAuthor();
si.removeKeywords();
si.removeSubject();
si.removeTitle();
doc.getDocumentSummaryInformation().removeCategory();
doc.getDocumentSummaryInformation().removeCompany();
doc.getDocumentSummaryInformation().removeManager();
try {
doc.getDocumentSummaryInformation().removeCustomProperties();
} catch (Exception e) {
// can not remove above
}
// until
ByteArrayOutputStream os = new ByteArrayOutputStream();
doc.write(os);
os.flush();
os.close();
return new ByteArrayInputStream(os.toByteArray());
}
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