Attachments in PDF document Leave feedback
GroupDocs.Watermark API allows you to extract attachments in PDF document. Following code performs this functionality.
advanced_usage.add_watermarks_to_pdf.PdfExtractAllAttachments
PdfLoadOptions loadOptions = new PdfLoadOptions();
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\document.pdf"
Watermarker watermarker = new Watermarker("document.pdf", loadOptions);
PdfContent pdfContent = watermarker.getContent(PdfContent.class);
for (PdfAttachment attachment : pdfContent.getAttachments())
{
System.out.println("Name: " + attachment.getName());
System.out.println("Description: " + attachment.getDescription());
System.out.println("File type: " + attachment.getDocumentInfo().getFileType());
// Save the attached file on disk
FileOutputStream outputStream = new FileOutputStream("SampleFiles\\Output" + "\\" + attachment.getName());
outputStream.write(attachment.getContent());
outputStream.close();
}
watermarker.close();
The API also allows you to add attachments to the PDF document. Following code snippet shows how to remove an attachment
advanced_usage.add_watermarks_to_pdf.PdfAddAttachment
PdfLoadOptions loadOptions = new PdfLoadOptions();
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\document.pdf"
Watermarker watermarker = new Watermarker("document.pdf", loadOptions);
PdfContent pdfContent = watermarker.getContent(PdfContent.class);
File file = new File("sample.docx");
byte[] attachmentBytes = new byte[(int) file.length()];
InputStream inputStream = new FileInputStream(file);
inputStream.read(attachmentBytes);
inputStream.close();
// Add the attachment
pdfContent.getAttachments().add(attachmentBytes, "sample doc", "sample doc as attachment");
// Save changes
watermarker.save("document.pdf");
watermarker.close();
The API also allows you to remove attachments from the PDF document. Following code snippet shows how to remove an attachment.
advanced_usage.add_watermarks_to_pdf.PdfRemoveAttachment
PdfLoadOptions loadOptions = new PdfLoadOptions();
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\document.pdf"
Watermarker watermarker = new Watermarker("document.pdf", loadOptions);
PdfContent pdfContent = watermarker.getContent(PdfContent.class);
for (int i = pdfContent.getAttachments().getCount() - 1; i >= 0; i--)
{
PdfAttachment attachment = pdfContent.getAttachments().get_Item(i);
// Remove all attached pdf files with a particular name
if (attachment.getName().contains("sample") && attachment.getDocumentInfo().getFileType() == FileType.DOCX)
{
pdfContent.getAttachments().removeAt(i);
}
}
watermarker.save("document.pdf");
watermarker.close();
In case you want to search for all the images attachments in a PDF document, you can use GroupDocs.Watermark. Following code sample shows how to search images attachments of PDF document.
advanced_usage.add_watermarks_to_pdf.PdfSearchImageInAttachment
PdfLoadOptions loadOptions = new PdfLoadOptions();
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\document.pdf"
Watermarker watermarker = new Watermarker("document.pdf", loadOptions);
// Consider only the attached images
watermarker.getSearchableObjects().setPdfSearchableObjects(PdfSearchableObjects.AttachedImages);
// Search for similar images
WatermarkableImageCollection possibleWatermarks = watermarker.getImages();
System.out.println("Found " + possibleWatermarks.getCount() + " image(s).");
watermarker.close();
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