Changing PDF Producer property with iText

问题

Is it possible to change an existing property of a PDF document with iText?

I tried this

Map<String, String> moreInfo = new HashMap<String, String>();
moreInfo.put(Meta.PRODUCER, "XXX");
moreInfo.put(Meta.AUTHOR, "YYY");

try {
    stamp1.setMoreInfo(moreInfo);
}
catch (Throwable t) {
    Log.d(this.getClass().getName(), t.getMessage());
}

I don't get any exception, but also nothing changes.

回答1:

That's not possible with the AGPL version of iText. Buying a license will enable you to change that field. See the Why buy a license section here.

来源：https://stackoverflow.com/questions/16963322/changing-pdf-producer-property-with-itext