Java给图片和PDF文件添加水印(图片水印和文字水印)
相关jar包下载
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import javax.imageio.ImageIO;
/**
* 給图片添加文字水印
*
* @author liqiang
*
*/
public class WaterMarkUtils {
/**
* @param args
*/
public static void main(String[] args) {
// 原图位置, 输出图片位置, 水印文字颜色, 水印文字
new WaterMarkUtils().mark("C:/Users/liqiang/Desktop/图片/kdmt.jpg", "C:/Users/liqiang/Desktop/图片/kdmt1.jpg",
Color.red, "圖片來源:XXX");
}
/**
* 图片添加水印
*
* @param srcImgPath
* 需要添加水印的图片的路径
* @param outImgPath
* 添加水印后图片输出路径
* @param markContentColor
* 水印文字的颜色
* @param waterMarkContent
* 水印的文字
*/
public void mark(String srcImgPath, String outImgPath, Color markContentColor, String waterMarkContent) {
try {
// 读取原图片信息
File srcImgFile = new File(srcImgPath);
Image srcImg = ImageIO.read(srcImgFile);
int srcImgWidth = srcImg.getWidth(null);
int srcImgHeight = srcImg.getHeight(null);
// 加水印
BufferedImage bufImg = new BufferedImage(srcImgWidth, srcImgHeight, BufferedImage.TYPE_INT_RGB);
Graphics2D g = bufImg.createGraphics();
g.drawImage(srcImg, 0, 0, srcImgWidth, srcImgHeight, null);
// Font font = new Font("Courier New", Font.PLAIN, 12);
Font font = new Font("宋体", Font.PLAIN, 20);
g.setColor(markContentColor); // 根据图片的背景设置水印颜色
g.setFont(font);
int x = srcImgWidth - getWatermarkLength(waterMarkContent, g) - 3;
int y = srcImgHeight - 3;
// int x = (srcImgWidth - getWatermarkLength(watermarkStr, g)) / 2;
// int y = srcImgHeight / 2;
g.drawString(waterMarkContent, x, y);
g.dispose();
// 输出图片
FileOutputStream outImgStream = new FileOutputStream(outImgPath);
ImageIO.write(bufImg, "jpg", outImgStream);
outImgStream.flush();
outImgStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 获取水印文字总长度
*
* @param waterMarkContent
* 水印的文字
* @param g
* @return 水印文字总长度
*/
public int getWatermarkLength(String waterMarkContent, Graphics2D g) {
return g.getFontMetrics(g.getFont()).charsWidth(waterMarkContent.toCharArray(), 0, waterMarkContent.length());
}
}
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.FileOutputStream;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
/**
* 給图片添加图片
*
* @author liqiang
*
*/
public class WaterMarkUtils {
/**
* @param args
*/
public static void main(String[] args) {
String srcImgPath = "C:/Users/liqiang/Desktop/图片/kdmt.jpg";
String iconPath = "C:/Users/liqiang/Desktop/图片/qlq.jpeg";
String targerPath = "C:/Users/liqiang/Desktop/图片/qlq1.jpeg";
String targerPath2 = "C:/Users/liqiang/Desktop/图片/qlq2.jpeg";
// 给图片添加水印
WaterMarkUtils.markImageByIcon(iconPath, srcImgPath, targerPath);
// 给图片添加水印,水印旋转-45
WaterMarkUtils.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();
}
}
}
}
com.lowagie
itextasian
1.0
com.lowagie
itext
2.1.7
import java.awt.Color;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Element;
import com.lowagie.text.Image;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfGState;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfStamper;
public class TestWaterPrint {
public static void main(String[] args) throws DocumentException, IOException {
// 要输出的pdf文件
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(new File("E:/abc.pdf")));
Calendar cal = Calendar.getInstance();
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
// 将pdf文件先加水印然后输出
setWatermark(bos, "G:/1.pdf", format.format(cal.getTime()) + " 下载使用人:" + "测试user", 16);
}
/**
*
* @param bos输出文件的位置
* @param input
* 原PDF位置
* @param waterMarkName
* 页脚添加水印
* @param permission
* 权限码
* @throws DocumentException
* @throws IOException
*/
public static void setWatermark(BufferedOutputStream bos, String input, String waterMarkName, int permission)
throws DocumentException, IOException {
PdfReader reader = new PdfReader(input);
PdfStamper stamper = new PdfStamper(reader, bos);
int total = reader.getNumberOfPages() + 1;
PdfContentByte content;
BaseFont base = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.EMBEDDED);
PdfGState gs = new PdfGState();
for (int i = 1; i < total; i++) {
content = stamper.getOverContent(i);// 在内容上方加水印
// content = stamper.getUnderContent(i);//在内容下方加水印
gs.setFillOpacity(0.2f);
// content.setGState(gs);
content.beginText();
content.setColorFill(Color.LIGHT_GRAY);
content.setFontAndSize(base, 50);
content.setTextMatrix(70, 200);
content.showTextAligned(Element.ALIGN_CENTER, "公司内部文件,请注意保密!", 300, 350, 55);
Image image = Image.getInstance("G:/2.jpeg");
/*
img.setAlignment(Image.LEFT | Image.TEXTWRAP);
img.setBorder(Image.BOX); img.setBorderWidth(10);
img.setBorderColor(BaseColor.WHITE); img.scaleToFit(100072);//大小
img.setRotationDegrees(-30);//旋转
*/
image.setAbsolutePosition(200, 206); // set the first background
// image of the absolute
image.scaleToFit(200, 200);
content.addImage(image);
content.setColorFill(Color.BLACK);
content.setFontAndSize(base, 8);
content.showTextAligned(Element.ALIGN_CENTER, "下载时间:" + waterMarkName + "", 300, 10, 0);
content.endText();
}
stamper.close();
}
}