Header not showing in PDF document - openpdf

Question

I am trying to add a header to each page in my document.
I am using OpenPDF 1.3.29 installed through Maven.
Here is a test program:
package test;
import java.io.FileOutputStream;
import com.lowagie.text.Document;
import com.lowagie.text.Font;
import com.lowagie.text.FontFactory;
import com.lowagie.text.HeaderFooter;
import com.lowagie.text.PageSize;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Phrase;
import com.lowagie.text.pdf.PdfWriter;
public class HeaderTest {
public static void main(String[] args)
throws Exception {
Document doc = null;
PdfWriter writer = null;
try {
doc = new Document(PageSize.LETTER, 50, 50, 50, 50);
writer = PdfWriter.getInstance(doc, new FileOutputStream("C:\\Tmp\\test.pdf"));
doc.open();
Font headerFont = FontFactory.getFont(FontFactory.HELVETICA_BOLD,18);
HeaderFooter header = new HeaderFooter(new Phrase("Test Header",headerFont), false);
doc.setHeader(header);
doc.add(new Paragraph("Test Content"));
} finally {
try { doc.close(); } catch( Exception e ) { }
try { writer.close(); } catch( Exception e ) { }
}
}
}
The resulting PDF contains the content paragraph, but not the header.
Looking at the sample code, this seems like it should work.
Any idea what I did wrong?

Answer 1

I figured it out.
I needed to set the header and footer before calling open() on the document.
Also, I changed the header and footer to use Paragraph instead of Phrase. This is strange because the JavaDocs use Phrase.
Anyway, this code works as expected:
package test;
import java.io.FileOutputStream;
import com.lowagie.text.Document;
import com.lowagie.text.Element;
import com.lowagie.text.Font;
import com.lowagie.text.FontFactory;
import com.lowagie.text.HeaderFooter;
import com.lowagie.text.PageSize;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Phrase;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfWriter;
public class HeaderTest {
public static void main(String[] args)
throws Exception {
Document doc = null;
PdfWriter writer = null;
try {
doc = new Document(PageSize.LETTER, 50, 50, 50, 50);
writer = PdfWriter.getInstance(doc, new FileOutputStream("C:\\Tmp\\test.pdf"));
HeaderFooter header = new HeaderFooter(new Paragraph("Test Header"), false);
header.setAlignment(HeaderFooter.ALIGN_CENTER);
header.setBorder(Rectangle.NO_BORDER);
doc.setHeader(header);
HeaderFooter footer = new HeaderFooter(new Paragraph("This is page: "), true);
footer.setBorder(Rectangle.NO_BORDER);
footer.setAlignment(Element.ALIGN_RIGHT);
doc.setFooter(footer);
doc.open();
doc.add(new Paragraph("Test Content"));
} finally {
try { doc.close(); } catch( Exception e ) { }
try { writer.close(); } catch( Exception e ) { }
}
}
}