Hi Moderators,
I found your mailing lists as an awesome source to PDF generation and
manipulation. Both the books
are fantastic. I read the books and couldnt find answer for my problem and I
need your advise in identifying
the right approach to encrypt (AES256) the contents of my zip file which are
usually a pdf and a csv
generated in memory. To achieve this i am zipping the files generated in the
following procedure but i have no clue
on how to encrypt it. I need something in the form of an output stream which
i can write to the response.
Please guide me
Thanks
King Goldman
public class Zip {
public static void main (String[] args) throws IOException,
DocumentException {
ZipOutputStream zip = new ZipOutputStream(new
FileOutputStream("C:\\result\\zip.zip"));
zip.setLevel(ZipOutputStream.STORED);
getPDF(zip);
getCSV(zip);
zip.close();
}
private static void getPDF(ZipOutputStream zip) throws IOException,
DocumentException {
ZipEntry pdfEntry = new ZipEntry("SamplePDF.pdf");
zip.putNextEntry(pdfEntry);
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, zip);
writer.setCloseStream(false);
document.open();
for (int i = 0; i < 3 ; i ++) {
document.add(new Paragraph("Hello " + i));
}
document.close();
zip.closeEntry();
}
private static void getCSV(ZipOutputStream zip) throws IOException {
ZipEntry csvEntry = new ZipEntry("SampleCSV.csv");
zip.putNextEntry(csvEntry);
StringBuilder csvBuilder = new StringBuilder();
csvBuilder.append("This is a Sample CSV");
String csv = csvBuilder.toString();
zip.write(csv.getBytes());
zip.closeEntry();
}
}
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