java如何实现在web工程中用OpenOffice生成带有图片水印的pdf
需要itext2.1.5，
以下是对pdf加水印的代码，包括文字水印和图片水印
public int fileCopy(String srcPath, String destPath) {
FileOutputStream fos = null;
FileInputStream fis = null;
try {
fos = new FileOutputStream(destPath);
fis = new FileInputStream(srcPath);
byte[] buffer = new byte[1024];
int len = 0;
while ((len = fis.read(buffer)) > 0) {
fos.write(buffer, 0, len);
}
return 1;
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
fis.close();
fos.flush();
fos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return 0;
}
/**
* 为pdf文件加文字水印
*
* @param srcPath
* 源文件路径
* @param destPath
* 目标文件路径
* @param waterText
* 水印文字
* @throws DocumentException
* @throws IOException
*/
public void wordWaterMark(String srcPath, String destPath, String waterText) throws DocumentException, IOException {
int result = fileCopy(srcPath, destPath);
if (result == 1) {
// 待加水印的文件
PdfReader reader = new PdfReader(destPath);
// 加完水印的文件
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(srcPath));
int total = reader.getNumberOfPages() + 1;
PdfContentByte content;
// 设置字体
BaseFont base = BaseFont.createFont(fontPath, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
// 水印文字
int j = waterText.length(); // 文字长度
char c = 0;
int high = 0;// 高度
// 循环对每页插入水印
for (int i = 1; i < total; i++) {
// 水印的起始
high = 60;
content = stamper.getUnderContent(i);
PdfGState gs = new PdfGState();
gs.setFillOpacity(0.1f);// 设置透明度为0.2
content.setGState(gs);
// 开始
content.beginText();
// 设置颜色
// content.setColorFill(new Color());
// 设置字体及字号
content.setFontAndSize(base, 88);
// 设置起始位置
content.setTextMatrix(120, 333);
// 开始写入水印
for (int k = 0; k < j; k++) {
content.setTextRise(high);
c = waterText.charAt(k);
content.showText(c + "");
high += 20;
}
content.endText();
}
stamper.close();
System.out.println("添加成功++++++++++++++++++++++++++++++++++++++++++");
} else {
System.out.println("复制pdf失败====================");
}
}
public void picWaterMark(String srcPath, String destPath, String imageFilePath)
throws DocumentException, IOException {
int result = fileCopy(srcPath, destPath);
if (result == 1) {
// 待加水印的文件
PdfReader reader = new PdfReader(destPath);
// 加完水印的文件
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(srcPath));
Image img = Image.getInstance(imageFilePath);
img.setAbsolutePosition(50, 400);// 坐标
img.setRotation(20);// 旋转 弧度
img.setRotationDegrees(45);// 旋转 角度
// image.scaleAbsolute(200,100);//自定义大小
img.scalePercent(50);// 依照比例缩放
int pageSize = reader.getNumberOfPages();
for (int i = 1; i <= pageSize; i++) {
PdfContentByte under = stamper.getUnderContent(i);
under.addImage(img);
PdfGState gs = new PdfGState();
gs.setFillOpacity(0.2f);// 设置透明度为0.2
under.setGState(gs);
}
stamper.close();// 关闭
System.out.println("添加成功++++++++++++++++++++++++++++++++++++++++++");
} else {
System.out.println("复制pdf失败====================");
}
}
linux下转pdf可以用libreoffice,需要安装，这个是免费的,具体代码如下：
String command = "libreoffice5.0 --invisible --convert-to pdf:writer_pdf_Export --outdir " + destFilepath
+ " " + source;
try {
p = Runtime.getRuntime().exec(command);
p.waitFor();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
博思aippt
2024-07-20 广告
import java.awt.AlphaComposite;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageDecoder;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
/**
* 图片水印
* @blog http://sjsky.iteye.com
* @author Michael
*/
public class ImageMarkLogoByIcon {
/**
* @param args
*/
public static void main(String[] args) {
String srcImgPath = "d:/test/michael/myblog_01.png";
String iconPath = "d:/test/michael/blog_logo.png";
String targerPath = "d:/test/michael/img_mark_icon.jpg";
String targerPath2 = "d:/test/michael/img_mark_icon_rotate.jpg";
// 给图片添加水印
ImageMarkLogoByIcon.markImageByIcon(iconPath, srcImgPath, targerPath);
// 给图片添加水印,水印旋转-45
ImageMarkLogoByIcon.markImageByIcon(iconPath, srcImgPath, targerPath2,
-45);
}
/**
* 给图片添加水印
* @param iconPath 水印图片路径
* @param srcImgPath 源图片路径
* @param targerPath 目标图片路径
*/
public static void markImageByIcon(String iconPath, String srcImgPath,
String targerPath) {
markImageByIcon(iconPath, srcImgPath, targerPath, null);
}
/**
* 给图片添加水印、可设置水印图片旋转角度
* @param iconPath 水印图片路径
* @param srcImgPath 源图片路径
* @param targerPath 目标图片路径
* @param degree 水印图片旋转角度
*/
public static void markImageByIcon(String iconPath, String srcImgPath,
String targerPath, Integer degree) {
OutputStream os = null;
try {
Image srcImg = ImageIO.read(new File(srcImgPath));
BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null),
srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB);
// 得到画笔对象
// Graphics g= buffImg.getGraphics();
Graphics2D g = buffImg.createGraphics();
// 设置对线段的锯齿状边缘处理
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg
.getHeight(null), Image.SCALE_SMOOTH), 0, 0, null);
if (null != degree) {
// 设置水印旋转
g.rotate(Math.toRadians(degree),
(double) buffImg.getWidth() / 2, (double) buffImg
.getHeight() / 2);
}
// 水印图象的路径 水印一般为gif或者png的，这样可设置透明度
ImageIcon imgIcon = new ImageIcon(iconPath);
// 得到Image对象。
Image img = imgIcon.getImage();
float alpha = 0.5f; // 透明度
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
alpha));
// 表示水印图片的位置
g.drawImage(img, 150, 300, null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
g.dispose();
os = new FileOutputStream(targerPath);
// 生成图片
ImageIO.write(buffImg, "JPG", os);
System.out.println("图片完成添加Icon印章。。。。。。");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != os)
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
