java操作pdf添加页眉条码添加水印图片

Post updated by `MetaWeblog API` on Mon Nov 26 2018 23:47:52 GMT+0800 (中国标准时间)

添加条码页眉以及图片水印

1. 引入jar包

    1. itext-4.2.1.jar

    2. itext-asian-5.2.0.jar

    3. jbarcode-0.2.8.jar

　　http://files.cnblogs.com/files/juforg/jar.zip

2. 代码

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import org.apache.commons.io.IOUtils;
import org.jbarcode.JBarcode;
import org.jbarcode.encode.Code39Encoder;
import org.jbarcode.encode.InvalidAtributeException;
import org.jbarcode.paint.BaseLineTextPainter;
import org.jbarcode.paint.WideRatioCodedPainter;import com.lowagie.text.BadElementException;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Image;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfGState;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfStamper;

/**
* pdf工具
*
* @author 宋杰
* @date 2016-07-11 13:19:33
*/
public class PdfUtils {
    /**
     * 添加条码
     * @param str  条码内容
     * @param filepath  pdf 文件绝对路径
     * @param l_height  水平位置
     * @param l_weight  垂直位置
     */public static void addString(String str,String filepath,int l_height,int l_weight){
        BufferedImage localBufferedImage=null;
        JBarcode jbcode = null;
        try {
            //1.创建条码图像
            jbcode = new org.jbarcode.JBarcode(Code39Encoder.getInstance(), WideRatioCodedPainter.getInstance(),BaseLineTextPainter.getInstance());
            localBufferedImage = jbcode.createBarcode(str);
            ByteArrayOutputStream bao= new ByteArrayOutputStream();
            ImageIO.write(localBufferedImage, "png", bao);
            Image img = Image.getInstance(bao.toByteArray());
            img.setAlignment(1);                         //居中显示
            img.setAbsolutePosition(l_height,  l_weight);//显示位置，根据需要调整
            img.scalePercent(60);                          //显示为原条形码图片大小的比例，百分比
            //2.创建pdf输入输出流
            InputStream is = new FileInputStream(filepath);
            PdfReader reader = new PdfReader(is);
            OutputStream os =  new FileOutputStream(filepath);
            PdfStamper stamp = new PdfStamper(reader, os);
            PdfContentByte contentByte = null;
            int n = reader.getNumberOfPages();
            //3. 设置透明度
            PdfGState gs = new PdfGState();
            gs.setFillOpacity(0.7f);
            gs.setStrokeOpacity(0.7f);

            //4.在pdf每页右上角添加条码
            for (int i = 1; i <= n; i++){
                contentByte = stamp.getOverContent(i);     // getOverContent 水印会把正文盖住    getUnderContent 水印会被正文的图片盖住
                contentByte.setGState(gs);
                contentByte.addImage(img);
                //contentByte.addImage(Image.getInstance("D:/primeton/yunda/ide/eclipse/workspace/ydsoa/com.yd.soa.budget/src/webcontent/comm/logo.jpg"));
            }
            //5.关闭所有输入输出
            reader.close();
            stamp.close();
            IOUtils.closeQuietly(bao);
            IOUtils.closeQuietly(is);
            IOUtils.closeQuietly(os);
        } catch (InvalidAtributeException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (BadElementException e) {
            e.printStackTrace();
        } catch (DocumentException e) {
            e.printStackTrace();
        }
    }

    /**
     * 添加图片水印 居中
     * @param imagepath  图片文件绝对路径
     * @param filepath  pdf 文件绝对路径
     */public static void addWaterImage(String imagepath,String filepath){
        InputStream is = null;
        PdfReader reader = null;
        OutputStream os = null;
        PdfStamper stamp = null;
      try {
            //1.创建pdf输入输出流
              is = new FileInputStream(filepath);
              reader = new PdfReader(is);
              os =  new FileOutputStream(filepath);
            stamp = new PdfStamper(reader, os);

            PdfContentByte contentByte = null;
            int n = reader.getNumberOfPages();
            //2. 设置透明度
            PdfGState gs = new PdfGState();
            gs.setFillOpacity(0.5f);
            gs.setStrokeOpacity(0.5f);
            //3. 读取图片
            Image logo = Image.getInstance(imagepath);
            //4.在pdf每页右上角添加条码
            for (int i = 1; i <= n; i++){
                contentByte = stamp.getUnderContent(i);     // getOverContent 水印会把正文盖住    getUnderContent 水印会被正文的图片盖住
                contentByte.setGState(gs);
                Rectangle rectangle = reader.getPageSize(i);
                 float width = rectangle.getWidth();
                 float height = rectangle.getHeight();
                logo.setAbsolutePosition(width/2-logo.getWidth()/2, height/2);
                contentByte.addImage(logo);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (BadElementException e) {
            e.printStackTrace();
        } catch (DocumentException e) {
            e.printStackTrace();
        }finally{
            //5.关闭所有输入输出
            reader.close();
            try {
                stamp.close();
            } catch (DocumentException e) {
            } catch (IOException e) {
            }
            IOUtils.closeQuietly(is);
            IOUtils.closeQuietly(os);
        }
    }

    public static void main(String[] args){
        addString("YDHT-CG-20160525-001", "D:/111.pdf", 400, 795);
        addWaterImage("com.yd.soa.budget/src/webcontent/comm/logo.jpg", "D:/111.pdf");

    }
}