1.引入依赖

com.e-iceblue

e-iceblue

http://repo.e-iceblue.cn/repository/maven-public/

e-iceblue

spire.pdf.free

2.6.3

2.代码

import com.spire.pdf.PdfDocument;

import com.spire.pdf.graphics.PdfImage;

import com.spire.pdf.graphics.PdfTrueTypeFont;

import com.spire.pdf.security.GraphicMode;

import com.spire.pdf.security.PdfCertificate;

import com.spire.pdf.security.PdfCertificationFlags;

import com.spire.pdf.security.PdfSignature;

import java.awt.*;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

public class ImageSignature {

public static void main(String[] args) {

//加载PDF文档

PdfDocument doc = new PdfDocument();

doc.loadFromFile("D:\\keytest\\7.pdf");

//加载pfx证书

PdfCertificate cert = new PdfCertificate("D:\\keytest\\keystore.p12", "123456");

//添加数字签名，设置其位置和大小

PdfSignature signature = new PdfSignature(doc, doc.getPages().get(doc.getPages().getCount() - 1), cert, "MySignature");

Rectangle2D rect = new Rectangle2D.Float();

rect.setFrame(new Point2D.Float((float) doc.getPages().get(0).getActualSize().getWidth() - 250, (float) doc.getPages().get(0).getActualSize().getHeight() - 300), new Dimension(170, 150));

signature.setBounds(rect);

//设置签名为图片形式

signature.setGraphicMode(GraphicMode.Sign_Image_Only);

signature.setSignImageSource(PdfImage.fromFile("D:\\keytest\\qm.png"));

//设置文档权限为禁止更改

//signature.setDocumentPermissions(PdfCertificationFlags.Forbid_Changes);

//signature.setCertificated(true);

//保存文档

doc.saveToFile("D:\\keytest\\8.pdf");

doc.close();

}

}