java 添加动态图章到 pdf-ag凯发旗舰厅

pdf动态图章通常由动态文字（如日期、时间）、经办人/组织名称、“已审核”等字样组成。本教程展示如何使用spire.pdf for java在pdf中添加动态图章。

import com.spire.pdf.annotations.pdfrubberstampannotation;
import com.spire.pdf.annotations.appearance.pdfappearance;
import com.spire.pdf.graphics.*;
import java.awt.*;
import java.awt.geom.point2d;
import java.awt.geom.rectangle2d;
import java.text.simpledateformat;
public class dynamicstamp {
    public static void main(string[] args) {
        //创建pdfdocument对象
        pdfdocument document = new pdfdocument();
        //加载pdf文档
        document.loadfromfile("c:\\users\\administrator\\desktop\\test.pdf");
        //获取第一页
        pdfpagebase page = document.getpages().get(0);
        //创建pdftamplate对象
        pdftemplate template = new pdftemplate(185, 50);
        //创建两种字体
        pdftruetypefont font1 = new pdftruetypefont(new font("宋体", font.plain  ,15), true);
        pdftruetypefont font2 = new pdftruetypefont(new font("宋体", font.plain  ,10), true);
        //创建单色画刷和渐变画刷
        pdfsolidbrush solidbrush = new pdfsolidbrush(new pdfrgbcolor(color.blue));
        rectangle2d rect1 = new rectangle2d.float();
        rect1.setframe(new point2d.float(0,0),template.getsize());
        pdflineargradientbrush lineargradientbrush = new pdflineargradientbrush(rect1,new pdfrgbcolor(color.white),new pdfrgbcolor(color.orange),pdflineargradientmode.horizontal);
        //创建圆角矩形路径
        int cornerradius = 20;
        pdfpath path = new pdfpath();
        path.addarc(template.getbounds().getx(), template.getbounds().gety(), cornerradius, cornerradius, 180, 90);
        path.addarc(template.getbounds().getx()   template.getwidth() - cornerradius,template.getbounds().gety(), cornerradius, cornerradius, 270, 90);
        path.addarc(template.getbounds().getx()   template.getwidth() - cornerradius, template.getbounds().gety()  template.getheight() - cornerradius, cornerradius, cornerradius, 0, 90);
        path.addarc(template.getbounds().getx(), template.getbounds().gety()   template.getheight() - cornerradius, cornerradius, cornerradius, 90, 90);
        path.addline( template.getbounds().getx(), template.getbounds().gety()   template.getheight() - cornerradius, template.getbounds().getx(), template.getbounds().gety()   cornerradius / 2);
        //绘制路径到模板，并进行填充
        template.getgraphics().drawpath(lineargradientbrush, path);
        template.getgraphics().drawpath(pdfpens.getblue(), path);
        //在模板上绘制文字及动态日期
        string s1 = "已审核\n";
        string s2 = "销售部 "   datetostring(new java.util.date(),"yyyy-mm-dd hh:mm:ss");
        template.getgraphics().drawstring(s1, font1, solidbrush, new point2d.float(5, 5));
        template.getgraphics().drawstring(s2, font2, solidbrush, new point2d.float(5, 28));
        //创建pdfrubberstampannotation对象，并指定其位置和大小
        rectangle2d rect2= new rectangle2d.float();
        rect2.setframe(new point2d.float((float)(page.getactualsize().getwidth()-250),(float)(page.getactualsize().getheight()-120)),  template.getsize());
        pdfrubberstampannotation stamp = new pdfrubberstampannotation(rect2);
        //创建pdfappearance对象，应用模板为一般状态
        pdfappearance appearance = new pdfappearance(stamp);
        appearance.setnormal(template);
        //应用样式到图章
        stamp.setappearance(appearance);
        //添加图章到annotation集合
        page.getannotationswidget().add(stamp);
        //保存文档
        document.savetofile("dynamicstamp.pdf");
        document.close();
    }
    //将日期转化成字符串
    public static string datetostring(java.util.date podate,string pcformat) {
        simpledateformat loformat = new simpledateformat(pcformat);
        return loformat.format(podate);
    }
}