java图片水印帮助类,java图片加水印速度快的方法

本文目录一览：

• 1、java图片加水印代码 最好有实例！！！先谢了！！
• 2、java中打印的pdf怎么添加图片水印
• 3、java（最好jsp）给图片加水印

java图片加水印代码 最好有实例！！！先谢了！！

文字水印

import java.awt.*;

import java.awt.image.*;

import java.io.*;

import javax.swing.*;

import com.sun.image.codec.jpeg.*;

public class WaterSet {

/**

* 给图片添加水印

*

* @param filePath

* 需要添加水印的图片的路径

* @param markContent

* 水印的文字

* @param markContentColor

* 水印文字的颜色

* @param qualNum

* 图片质量

* @return

*/

public boolean createMark(String filePath, String markContent,

Color markContentColor, float qualNum) {

ImageIcon imgIcon = new ImageIcon(filePath);

Image theImg = imgIcon.getImage();

int width = theImg.getWidth(null);

int height = theImg.getHeight(null);

BufferedImage bimage = new BufferedImage(width, height,

BufferedImage.TYPE_INT_RGB);

Graphics2D g = bimage.createGraphics();

g.setColor(markContentColor);

g.setBackground(Color.white);

g.drawImage(theImg, 0, 0, null);

g.drawString(markContent, width / 5, height / 5); // 添加水印的文字和设置水印文字出现的内容

g.dispose();

try {

FileOutputStream out = new FileOutputStream(filePath);

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);

JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bimage);

param.setQuality(qualNum, true);

encoder.encode(bimage, param);

out.close();

} catch (Exception e) {

return false;

}

return true;

}

}

图片水印

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.FileOutputStream;

import javax.imageio.ImageIO;

import com.sun.image.codec.jpeg.JPEGCodec;

import com.sun.image.codec.jpeg.JPEGImageEncoder;

public final class ImageUtils {

public ImageUtils() {

}

/*

* public final static String getPressImgPath() { return ApplicationContext

* .getRealPath(“/template/data/util/shuiyin.gif”); }

*/

/**

* 把图片印刷到图片上

*

* @param pressImg —

* 水印文件

* @param targetImg —

* 目标文件

* @param x

* –x坐标

* @param y

* –y坐标

*/

public final static void pressImage(String pressImg, String targetImg,

int x, int y) {

try {

//目标文件

File _file = new File(targetImg);

Image src = ImageIO.read(_file);

int wideth = src.getWidth(null);

int height = src.getHeight(null);

BufferedImage image = new BufferedImage(wideth, height,

BufferedImage.TYPE_INT_RGB);

Graphics g = image.createGraphics();

g.drawImage(src, 0, 0, wideth, height, null);

//水印文件

File _filebiao = new File(pressImg);

Image src_biao = ImageIO.read(_filebiao);

int wideth_biao = src_biao.getWidth(null);

int height_biao = src_biao.getHeight(null);

g.drawImage(src_biao, (wideth – wideth_biao) / 2,

(height – height_biao) / 2, wideth_biao, height_biao, null);

//水印文件结束

g.dispose();

FileOutputStream out = new FileOutputStream(targetImg);

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);

encoder.encode(image);

out.close();

} catch (Exception e) {

e.printStackTrace();

}

}

/**

* 打印文字水印图片

*

* @param pressText

* –文字

* @param targetImg —

* 目标图片

* @param fontName —

* 字体名

* @param fontStyle —

* 字体样式

* @param color —

* 字体颜色

* @param fontSize —

* 字体大小

* @param x —

* 偏移量

* @param y

*/

public static void pressText(String pressText, String targetImg,

String fontName, int fontStyle, int color, int fontSize, int x,

int y) {

try {

File _file = new File(targetImg);

Image src = ImageIO.read(_file);

int wideth = src.getWidth(null);

int height = src.getHeight(null);

BufferedImage image = new BufferedImage(wideth, height,

BufferedImage.TYPE_INT_RGB);

Graphics g = image.createGraphics();

g.drawImage(src, 0, 0, wideth, height, null);

// String s=””;

g.setColor(Color.RED);

g.setFont(new Font(fontName, fontStyle, fontSize));

g.drawString(pressText, wideth – fontSize – x, height – fontSize

/ 2 – y);

g.dispose();

FileOutputStream out = new FileOutputStream(targetImg);

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);

encoder.encode(image);

out.close();

} catch (Exception e) {

System.out.println(e);

}

}

public static void main(String[] args) {

pressImage(“F:/logo.png”, “F:/123.jpg”, 0, 0);

}

}

java中打印的pdf怎么添加图片水印

添加水印可以参考使用控件来添加的方法，如下：

1. 添加单个图片水印效果：

import com.spire.pdf.*;

import java.awt.geom.Rectangle2D;

public class watermark {

public static void main(String[] args) {

//加载PDF文档

PdfDocument doc = new PdfDocument();

doc.loadFromFile(“C:\\Users\\Administrator\\Desktop\\Sample.pdf”);

//获取第一页

PdfPageBase page = doc.getPages().get(0);

//设置背景图片

page.setBackgroundImage(“C:\\Users\\Administrator\\Desktop\\logo.png”);

//设置背景区域

Rectangle2D.Float rect = new Rectangle2D.Float();

rect.setRect(280, 300, 150, 150);

page.setBackgroundRegion(rect);

//保存文档

doc.saveToFile(“output/imageWaterMark.pdf”);

doc.close();

}

}

2. 添加平铺图片水印效果

import com.spire.pdf.*;

import com.spire.pdf.graphics.PdfImage;

import com.spire.pdf.graphics.PdfTilingBrush;

import java.awt.*;

import java.awt.geom.Dimension2D;

import java.awt.geom.Rectangle2D;

public class AddBackground {

public static void main(String[] args) {

//创建PdfDocument对象,并加载PDF测试文档

PdfDocument pdf = new PdfDocument();

pdf.loadFromFile(“test.pdf”);

//遍历文档每一页,加载图片，并设置成平铺背景（水印）

for (int i = 0; i pdf.getPages().getCount();i++)

{

PdfPageBase page = pdf.getPages().get(i);

Dimension2D dimension2D = new Dimension();

dimension2D.setSize(page.getCanvas().getSize().getWidth()/4, page.getCanvas().getSize().getHeight()/3);

PdfTilingBrush brush = new PdfTilingBrush(dimension2D);

brush.getGraphics().setTransparency(0.2f);

     brush.getGraphics().translateTransform(brush.getSize().getWidth()/10,brush.getSize().getHeight()/10);

brush.getGraphics().rotateTransform(30);

PdfImage image = PdfImage.fromImage(“logo.png”);

brush.getGraphics().drawImage(image,brush.getSize().getWidth()-image.getWidth()/2,(brush.getSize().getHeight())/2);

Rectangle2D rectangle2D = new Rectangle2D.Float();

rectangle2D.setFrame(new Point(0,0),page.getCanvas().getClientSize());

page.getCanvas().drawRectangle(brush,rectangle2D);

}

//保存文档

pdf.saveToFile(“SetTiledBackground.pdf”);

pdf.dispose();

}

}

注：这里使用的是free Spire.Pdf.jar(以上代码参考自文章1、文章2）

java（最好jsp）给图片加水印

Java给图片加水印

/**

* 方法描述：b给图片增加水印./b/br

* 备 注: 在图片上写字符串

* 创 建 人: bo.gaobo/br

* 创建日期: 2012-09-07/br

* @param originalUrl 原始图片存储路径

* @param oldImg 原图片

* @param str 增加的字符串

* @param xLocation x坐标

* @param yLocation y坐标

* @param fontColor 颜色

* @param fontSize 字号

* @param typeFace 字体

* @param fileType 文件类型

*/

public static BufferedImage addStringToImg(String originalUrl, BufferedImage oldImg,String str,int xLocation,int yLocation, Color fontColor, int fontSize, String typeFace, String fileType) throws IOException{

FileOutputStream output = new FileOutputStream(originalUrl);

BufferedImage buffImg = oldImg;

Graphics2D g = buffImg.createGraphics();

g = buffImg.createGraphics();

g.drawImage(buffImg, null, 0, 0);

g.setColor(fontColor); //设置字体颜色

g.setFont(new Font(typeFace, Font.PLAIN, fontSize)); //设置字体和字号

g.drawString(str, xLocation, yLocation); //把字符串放在对应的坐标处

g.dispose();

ImageIO.write(buffImg, fileType, output); //设置文件类型

output.close();

return buffImg;

}