java pdf 页眉_java操作pdf添加页眉条码添加水印图片
importjava.awt.image.BufferedImage;importjava.io.ByteArrayOutputStream;importjava.io.FileInputStream;importjava.io.FileOutputStream;importjava.io.IOException;importjava.io.InputStream;importjava.io.OutputStream;importjavax.imageio.ImageIO;importorg.apache.commons.io.IOUtils;importorg.jbarcode.JBarcode;importorg.jbarcode.encode.Code39Encoder;importorg.jbarcode.encode.InvalidAtributeException;importorg.jbarcode.paint.BaseLineTextPainter;importorg.jbarcode.paint.WideRatioCodedPainter;importcom.lowagie.text.BadElementException;importcom.lowagie.text.DocumentException;importcom.lowagie.text.Image;importcom.lowagie.text.Rectangle;importcom.lowagie.text.pdf.PdfContentByte;importcom.lowagie.text.pdf.PdfGState;importcom.lowagie.text.pdf.PdfReader;importcom.lowagie.text.pdf.PdfStamper;/*** pdf工具
*
*@author宋杰
* @date 2016-07-11 13:19:33*/
public classPdfUtils {/*** 添加条码
*@paramstr 条码内容
*@paramfilepath pdf 文件绝对路径
*@paraml_height 水平位置
*@paraml_weight 垂直位置*/public static void addString(String str,String filepath,int l_height,intl_weight){
BufferedImage localBufferedImage=null;
JBarcode jbcode= null;try{//1.创建条码图像
jbcode = neworg.jbarcode.JBarcode(Code39Encoder.getInstance(), WideRatioCodedPainter.getInstance(),BaseLineTextPainter.getInstance());
localBufferedImage=jbcode.createBarcode(str);
ByteArrayOutputStream bao= newByteArrayOutputStream();
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 = newFileInputStream(filepath);
PdfReader reader= newPdfReader(is);
OutputStream os= newFileOutputStream(filepath);
PdfStamper stamp= newPdfStamper(reader, os);
PdfContentByte contentByte= null;int n =reader.getNumberOfPages();//3. 设置透明度
PdfGState gs = newPdfGState();
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
*@paramimagepath 图片文件绝对路径
*@paramfilepath pdf 文件绝对路径*/public static voidaddWaterImage(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 = newFileInputStream(filepath);
reader= newPdfReader(is);
os= newFileOutputStream(filepath);
stamp= newPdfStamper(reader, os);
PdfContentByte contentByte= null;int n =reader.getNumberOfPages();//2. 设置透明度
PdfGState gs = newPdfGState();
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 voidmain(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");
}
}