java.lang.ClassCastException : org. apache.pdfbox.cos.COSArray

Question

ClassCastException 发生在突出显示的行，知道吗？

PDDocument doc = PDDocument.load(sourcePDF);
doc.setAllSecurityToBeRemoved(true);

PDDocumentCatalog docCatalog = doc.getDocumentCatalog();
PDAcroForm form = docCatalog.getAcroForm(); 
PDXFA xfa = form.getXFA();
COSBase cos = xfa.getCOSObject();
**COSStream coss = (COSStream) cos;**

Answer 1

看起来 xfa.getCOSObject() 返回一个 COSArray，但您将其转换为 COSStream。应该是

COSArray coss = (COSArray) cos;