解决方法
试试这段代码:
private void openPDFDoc(final File pdfFile) throws Exception { File originalPDF = pdfFile; PDFParser parser = new PDFParser(new BufferedInputStream(new FileInputStream( originalPDF))); parser.parse(); PDDocument originialPdfDoc = parser.getPDDocument(); boolean isOriginalDocEncrypted = originialPdfDoc.isEncrypted(); if (isOriginalDocEncrypted) { originialPdfDoc.openProtection(new StandardDecryptionMaterial("password")); } }