Throw new RuntimeException("size must contain four numbers") Throw new RuntimeException("signature size is required if not being using in a table cell") įloat rect = ITextUtils.stringToFloatArray(size) Size = (String) valueBinding(context, "size", size) Protected float determineSize(FacesContext context) Object iTextObject = uiCell.getITextObject() Add cell event if being placed in a table cellĬell.setCellEvent(new FieldCell(signatureField, writer))
PdfFormField signatureField = form.addSignature(getField(context), rect, rect, rect, rect)
Throw new RuntimeException("Cannot find PdfWriter - the document may not exist or may not be a pdf type") If the unsigned signature is not inside a table cell then the size must be provided. This.size = void encodeEnd(FacesContext context) throws IOException Public class UIUnsignedSignature extends ITextComponent size – a String containing rectangle parameters in the form of “llx lly urx ury”.This will show up in the pdf signature panel. If size is not provided, it is assumed the parent tag will be a p:cell. Thirdly, I created the unsigned signature component with the following signature. Secondly, I added the component to faces-config.xml. So, I ended up creating a custom tag to handle adding an unsigned signature.įirst, I created a taglib.xml file and modified the build to place it under “WEB-INF/classes/META-INF/facelets”.Ĭom.pdf.UIUnsignedSignature Basically, its a way for the document receiver to validate the source of the document and for them to know that it has not been altered. After looking at the source, I realized this is really an “author” signature.
Itext pdf signature example how to#
This tag is not documented so I wasn’t sure how to use it or what it did. The requirement was to provide an external user with the ability to approve a proposal.įor the sake of those that have never created a custom facelet component, I have provided the details of how this is done throughout this post.Īt first I thought I could use the existing p:signature tag in the Seam/PDF component library. In the process of building a proposal management system, I found myself needing to add an unsigned signature to a PDF. Return getEnvironmentVariable("esignatureCaCertLabels").Seam provides a nice component library that uses iText to generate a PDF document. Return getEnvironmentVariable("esignaturePrivateKeyLabel") Return getEnvironmentVariable("esignaturePartitionPassword") 14.6.1 Modifying the Search Employee Example to Generate PDF View In the.
Itext pdf signature example code#
Return getEnvironmentVariable("esignaturePartitionName") The buildPdfDocument() method signature is shown in the following code snippet. Please add it to the environment configuration (Tomcat conf/context.xml if this application is running as a. Estimate how much room the signed content will take up and reserve some space for it.īyte encodedSig = generateDigitalSignature(appearance, credentials) PdfSignatureAppearance appearance = setAppearance(stamper, credentials, reason, location)
Map credentials = keyStoreService.credentials These aren't digital signature fields, they're just text fields. Write the 'signatures' entered by applicants to the appropriate fields in the document. PdfStamper stamper = PdfStamper.createSignature(reader, fout, '\0'.toCharacter().charValue(), null, true) Groovy thinks '\0' is a GString, so we have to be explicit and force it to char. PdfReader reader = new PdfReader(documentPath, )įile signed = new File(signedDocumentPath)įileOutputStream fout = new FileOutputStream(signed) PdfUtil.encrypt(content, PDF_PERMISSIONS, keyStoreService.pdfOwnerPassword)ĭef applySignatures(String documentPath, String signedDocumentPath, Map signatureMap, We use iText to provide high availability and a reliable service to our customers and their documents. We use it with the purpose of extracting text, applying watermarks, and performing other general purpose PDF functions. PdfUtil.encryptFile(file, PDF_PERMISSIONS, keyStoreService.pdfOwnerPassword) We have used iText for over 7 years in the DocuSign flagship product, our eSignature services. Private static final List PDF_PERMISSIONS = [ If you are serious about using iText for digital signatures, I would definitely recommend that you buy the book. This code is basically just a refactoring of the examples provided in iText in Action, 2nd Edition, Chapter 12, with a few accomodations for Groovy, Grails, and a SafeNet Luna HSM. It works in conjunction with the KeyStoreService posted in the previous article. Here’s the latest iteration of the service and methods that we’re using in our production digital signature process. I’ve posted examples of document signing using iText and Grails previously.
0 kommentar(er)
