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import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.util.HashMap;
import com.lowagie.text.Document;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfStamper;
import com.lowagie.text.pdf.PdfWriter;
import com.lowagie.text.xml.xmp.XmpWriter;
public class HelloWorldAddMetadata {
public static void main(String[] args) throws Exception {
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream("HelloWorld.pdf"));
document.open();
document.add(new Paragraph("Hello World"));
document.close();
PdfReader reader = new PdfReader("HelloWorld.pdf");
System.out.println("Tampered? " + reader.isTampered());
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(
"HelloWorldStampedMetadata.pdf"));
System.out.println("Tampered? " + reader.isTampered());
HashMap<String, String> info = reader.getInfo();
info.put("Subject", "Hello World");
info.put("Author", "your name");
info.put("Keywords", "iText pdf");
info.put("Title", "Hello World stamped");
info.put("Creator", "your name");
stamper.setMoreInfo(info);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
XmpWriter xmp = new XmpWriter(baos, info);
xmp.close();
stamper.setXmpMetadata(baos.toByteArray());
stamper.close();
}
}
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