password protected doc and docx file in java

Question

I want to protect doc and docx files with password using java. I have tried using Apache POI. But it can't help me out.I am not getting any file at the location How would I do that? Any another way or API??

            POIFSFileSystem fs = new POIFSFileSystem();
            EncryptionInfo info = new EncryptionInfo(fs);
            File file=new File("D:/abc.doc");
            Encryptor enc = info.getEncryptor();
            enc.confirmPassword("xxxxx");

            OPCPackage opc = OPCPackage.open(file,PackageAccess.READ_WRITE);
            OutputStream os = enc.getDataStream(fs);
            opc.save(os);
            opc.close();

            FileOutputStream fos = new FileOutputStream("D:/abc12345.docs");
            fs.writeFilesystem(fos);
            fos.close(); 

Answer 1

See: http://www.quicklyjava.com/create-password-protected-excel-using-apache-poi/

Try this constructor for info object:

EncryptionInfo info = new EncryptionInfo(EncryptionMode.agile);

Answer 2

进行检查并尝试调整自己的位置http://www.quicklyjava.com/create-password-protected-excel-using-apache-poi/