Java实现给图⽚添加图⽚⽔印，⽂字⽔印及马赛克的⽅法⽰例本⽂实例讲述了Java实现给图⽚添加图⽚⽔印，⽂字⽔印及马赛克的⽅法。
分享给⼤家供⼤家参考，具体如下：可以在eclipse中新建个Utils类，把以下代码复制进去直接使⽤，以下⽅法实现单个或多个⽔印的添加package mon.util;import java.awt.AlphaComposite;import java.awt.Color;import java.awt.Font;import java.awt.Graphics2D;import java.awt.Image;import java.awt.RenderingHints;import java.awt.image.BufferedImage;import java.io.File;import javax.imageio.ImageIO;import javax.swing.ImageIcon;/*** 给图⽚添加⽔印* @author tgy**/public class MarkImageUtils {/*** @param args*/public static void main(String[] args) {String output = "F:/images/";String source = "F:/images/6.jpg"; //源图⽚路径String icon = "F:/images/icon2.png"; //覆盖图⽚路径String imageName = "mark_image"; //图⽚名称String imageType = "jpg"; //图⽚类型jpg,jpeg,png,gifString text = "加⽔印了";int size = 4; //马赛克⼤⼩Integer degree = null; //⽔印旋转⾓度-45，null表⽰不旋转String result = null;//给图⽚添加图⽚⽔印result = MarkImageUtils.markImageByMoreIcon(icon,source,output,imageName,imageType,degree);// result = MarkImageUtils.markImageBySingleIcon(icon, source, output, imageName, imageType, degree);// //给图⽚添加⽂字⽔印// result = MarkImageUtils.markImageByMoreText(source,output,imageName,imageType,Color.red,text,degree);// result = MarkImageUtils.markImageBySingleText(source,output,imageName,imageType,Color.red,text,degree);// //给图⽚打马赛克// result = MarkImageUtils.markImageByMosaic(source,output,imageName,imageType,size);System.out.println(result);}/*** 给图⽚不同位置添加多个图⽚⽔印、可设置⽔印图⽚旋转⾓度* @param icon ⽔印图⽚路径（如：F:/images/icon.png）* @param source 没有加⽔印的图⽚路径（如：F:/images/6.jpg）* @param output 加⽔印后的图⽚路径（如：F:/images/）* @param imageName 图⽚名称（如：11111）* @param imageType 图⽚类型（如：jpg）* @param degree ⽔印图⽚旋转⾓度，为null表⽰不旋转*/public static String markImageByMoreIcon(String icon,String source,String output,String imageName,String imageType,Integer degree) {String result = "添加图⽚⽔印出错";try {File file = new File(source);File ficon = new File(icon);if (!file.isFile()) {return source + " 不是⼀个图⽚⽂件!";}//将icon加载到内存中Image ic = ImageIO.read(ficon);//icon⾼度int icheight = ic.getHeight(null);//将源图⽚读到内存中Image img = ImageIO.read(file);//图⽚宽int width = img.getWidth(null);//图⽚⾼int height = img.getHeight(null);BufferedImage bi = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);//创建⼀个指定 BufferedImage 的 Graphics2D 对象Graphics2D g = bi.createGraphics();//x,y轴默认是从0坐标开始int x = 0;int y = 0;//默认两张⽔印图⽚的间隔⾼度是⽔印图⽚的1/3int temp = icheight/3;int space = 1;if(height>=icheight){space = height/icheight;if(space>=2){temp = y = icheight/2;if(space==1||space==0){x = 0;y = 0;}}}else{x = 0;y = 0;}//设置对线段的锯齿状边缘处理g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,RenderingHints.VALUE_INTERPOLATION_BILINEAR);//呈现⼀个图像，在绘制前进⾏从图像空间到⽤户空间的转换g.drawImage(img.getScaledInstance(width,height,Image.SCALE_SMOOTH),0,0,null);for(int i=0;i<space;i++){if (null != degree) {//设置⽔印旋转g.rotate(Math.toRadians(degree),(double) bi.getWidth() / 2, (double) bi.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(icon);//得到Image对象。
