Creating a PDF image in iText

问题:

I'm trying to add an image that I have on the filesystem as a pdf into a pdf that I'm creating on the fly.

I tried to use the Image class, but it seems that it does not work with PDFs (only JPEG, PNG or GIF). How can I create an element from an existing PDF, so that I can place it in my new PDF?

回答1:

Please download chapter 6 of my book and read all about the class PdfImportedPage.

In the most basic example, you'd create a PdfReader instance and import the page into the PdfWriter instance, from which point on you can use the PdfImportedPage instance, either directly, or wrapped inside an Image object:

PdfReader reader = new PdfReader(existingPdf);
PdfImportedPage page = writer.getImportedPage(reader, i);
Image img = Image.getInstance(page);
reader.close();