OK I think I have it figured out (it works at any rate!). I'd be most
interested in your opinions in terms of memory efficiency.
Many Thanks,
Anthony
public class Test {
public static final String CONTENT = "content.pdf";
public static final String HEADER = "header.pdf";
public static final String TEMPLATE = "template.pdf";
public static final String RESULT = "result.pdf";
public static void main(String[] args) throws Exception {
// First Pass - Create Content
Document document = new Document(PageSize.A4);
PdfWriter.getInstance(document, new FileOutputStream(CONTENT));
document.open();
Chapter chapter = new Chapter("Chapter", 1);
chapter.setBookmarkOpen(true);
chapter.add(new Paragraph("Chapter intro paragraph"));
Section section = chapter.addSection("Section", 0);
section.add(new Paragraph("Section paragraph"));
section.add(new Paragraph("Section paragraph"));
document.add(chapter);
document.close();
// Second Pass - Apply Template (optional)
PdfReader contentReader = new PdfReader(new
RandomAccessFileOrArray(CONTENT), null);
PdfStamper contentStamper = new PdfStamper(contentReader, new
FileOutputStream(RESULT));
PdfStamper stamper;
PdfReader reader = new PdfReader(new RandomAccessFileOrArray(TEMPLATE),
null);
int numPages = contentReader.getNumberOfPages();
for (int i = 1; i <= numPages; i++) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
stamper = new PdfStamper(reader, baos);
AcroFields form = stamper.getAcroFields();
Set<String> keys = new HashSet<String>(form.getFields().keySet());
for (String key : keys) {
form.setField(key, getStringValueFor(String reference));
}
stamper.setFormFlattening(true);
stamper.close();
PdfImportedPage page = contentStamper.getImportedPage(new
PdfReader(baos.toByteArray()), 1);
contentStamper.getUnderContent(i).addTemplate(page, 0, 0);
}
// Header
ByteArrayOutputStream baos = new ByteArrayOutputStream();
reader = new PdfReader(new RandomAccessFileOrArray(HEADER), null);
stamper = new PdfStamper(reader, baos);
AcroFields form = stamper.getAcroFields();
Set<String> keys = new HashSet<String>(form.getFields().keySet());
for (String key : keys) {
form.setField(key, getStringValueFor(String reference));
}
stamper.setFormFlattening(true);
stamper.close();
PdfImportedPage page = contentStamper.getImportedPage(new
PdfReader(baos.toByteArray()), 1);
contentStamper.insertPage(1, contentReader.getPageSize(1));
contentStamper.getOverContent(1).addTemplate(page, 0, 0);
contentStamper.close();
}
}
_____
From: Antony Webster [mailto:[email protected]]
To: [email protected], Post all your questions about iText here
[mailto:[email protected]]
Sent: Mon, 14 Feb 2011 00:19:18 +0100
Subject: Re: [iText-questions] PDF Watermarks
OK this is as far as I've got so far. So far I'm only handling
the front page (HEADER) however the HEADER pdf form fields don't seem to be
filled.
// First Pass - Create Content
Document document = new Document(PageSize.A4);
PdfWriter.getInstance(document, new FileOutputStream(CONTENT));
document.open();
Chapter chapter = new Chapter("Chapter", 1);
chapter.setBookmarkOpen(true);
chapter.add(new Paragraph("Chapter intro paragraph"));
Section section = chapter.addSection("Section", 0);
section.add(new Paragraph("Section paragraph"));
section.add(new Paragraph("Section paragraph"));
document.add(chapter);
document.close();
// Second Pass - Apply Header & Template (optional)
// Fill header fields
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PdfReader headerReader = new PdfReader(new RandomAccessFileOrArray(HEADER),
null);
PdfStamper stamper = new PdfStamper(headerReader, baos);
AcroFields form = stamper.getAcroFields();
Set<String> keys = new HashSet<String>(form.getFields().keySet());
for (String key : keys) {
form.setField(key, getStringValueFor(String key));
}
stamper.close();
// 1.2 Insert into final document
PdfReader contentReader = new PdfReader(new RandomAccessFileOrArray(CONTENT),
null);
headerReader = new PdfReader(baos.toByteArray());
stamper = new PdfStamper(contentReader, new FileOutputStream(RESULT));
PdfImportedPage page = stamper.getImportedPage(headerReader, 1);
stamper.insertPage(1, contentReader.getPageSize(1));
stamper.getOverContent(1).addTemplate(page, 0, 0);
stamper.close();
_____
From: Antony Webster [mailto:[email protected]]
To: [email protected]
Sent: Sun, 13 Feb 2011 21:09:42 +0100
Subject: [iText-questions] PDF Watermarks
Hi,
I'm trying to merge various pdfs while both keeping memory use and final file
size down. Here is my scenario.
I'm generating pdfs of approximately 90 pages. So far so good. However I'd like
to merge each page of my 'content' pdf with a 'template' pdf. This 'template'
pdf is like a 1 page watermark containing a header, a footer and possibly an
actual watermark. Additionally the header and footer will contain fields which
reference information about the context of the 'content' pdf (for instance
'author', 'date', 'company' etc..). These fields will be filled in upon
generation. They will stay the same for each page however the 'page number'
field obviously won't. It doesn't stop there. I'd also like to append a 'title
page' pdf to the final pdf file. Similarly this file with have fields which
shall be filled in upon generation.
Any help would be most appreciated...
Anthony ------------------------------------------------------------------------------
The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE:
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http://p.sf.net/sfu/intel-dev2devfeb
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