java 添加图片图章到 pdf-凯发线上登陆下载网址

本教程展示如何使用spire.pdf for java在pdf中添加图片图章。

import com.spire.pdf.annotations.pdfrubberstampannotation;
import com.spire.pdf.annotations.appearance.pdfappearance;
import com.spire.pdf.graphics.pdfimage;
import com.spire.pdf.graphics.pdftemplate;
import java.awt.geom.rectangle2d;
public class imagestamp {
    public static void main(string[] args) {
        //创建pdfdocument对象
        pdfdocument doc = new pdfdocument();
        //加载pdf文档
        doc.loadfromfile("c:\\users\\administrator\\desktop\\test.pdf");
        //获取第一页
        pdfpagebase page = doc.getpages().get(0);
        //加载图片到pdfimage对象
        pdfimage image = pdfimage.fromfile("c:\\users\\administrator\\desktop\\quality-control-stamp.png");
        //获取图片高宽
        int width = image.getwidth();
        int height = image.getheight();
        //创建pdftemplate对象，大小跟图片一致
        pdftemplate template = new pdftemplate(width, height);
        //在模板上绘制图片
        template.getgraphics().drawimage(image, 0, 0, width, height);
        //创建pdfrubebrstampannotation对象，指定大小和位置
        rectangle2d rect = new rectangle2d.float((float) (page.getactualsize().getwidth() - width - 50), (float) (page.getactualsize().getheight() - height - 80), width, height);
        pdfrubberstampannotation stamp = new pdfrubberstampannotation(rect);
        //创建pdfappearance对象
        pdfappearance pdfappearance = new pdfappearance(stamp);
        //将模板应用为pdfappearance的一般状态
        pdfappearance.setnormal(template);
        //将pdfappearance 应用为图章的样式
        stamp.setappearance(pdfappearance);
        //添加图章到pdf
        page.getannotationswidget().add(stamp);
        //保存文档
        doc.savetofile("imagestamp.pdf");
        doc.close();
    }
}