java 图片水印(图片水印和文字水印)
package com.text.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 java.io.FileOutputStream;import java.io.InputStream;import java.io.OutputStream;import javax.imageio.ImageIO;import javax.swing.ImageIcon;/** * 图片水印处理 */public class ImageMarkUtil {/** * @param args */public static void main(String[] args) {String srcImgPath = "d:/2.jpg";String iconPath = "d:/3.png";String targerPath = "d:/4.jpg";String targerPath3 = "d:/5.jpg";String logoText = "[图片水印 http://563525042.iteye.com]";// 给图片添加图片水印ImageMarkUtil.markImageByIcon(iconPath, srcImgPath, targerPath,0,0.5f, 50, 80);// 给图片添加文字水印ImageMarkUtil.markByText(logoText, srcImgPath, targerPath3,0, 0.5f,60, 90,"0",20);} /** * 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 * @param transparency * 水印透明度 如0.5f * @param sWidth * 水印图片离原图左边框距离百分比 * @param sHeight 水印图片离原图上边框距离百分比 */public staticvoid markImageByIcon(String iconPath, String srcImgPath,String targerPath, Integer degree, float transparency,Integer sWidth, Integer sHeight) {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 = transparency; // 透明度g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,alpha));ImageIcon imgtarget = new ImageIcon(srcImgPath);Image theImg = imgtarget.getImage();intwidth = theImg.getWidth(null);int height = theImg.getHeight(null);// 表示水印图片的位置g.drawImage(img,(int)(width*((float)sWidth/(float)100)), (int)(height*(float)sHeight/(float)100), null);g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));g.dispose();os = new FileOutputStream(targerPath);// 生成图片ImageIO.write(buffImg, "JPG", os);} catch (Exception e) {e.printStackTrace();} finally {try {if (null != os)os.close();} catch (Exception e) {e.printStackTrace();}}}/** * 给图片添加文字水印、可设置水印的旋转角度 ** @param logoText * @param srcImgPath * @param targerPath * @param degree * @param transparency * 水印透明度 如0.5f * @param sWidth * 水印图片离原图左边框距离百分比 * @param sHeight * 水印图片离原图上边框距离百分比 *@param sfontbold 字体是否加粗（0：加粗，1：正常） *@param sforntsize 字体大小 */public static void markByText(String logoText, String srcImgPath,String targerPath, Integer degree,float transparency,Integer sWidth, Integer sHeight,String sfontbold,Integer sforntsize) {// 主图片的路径InputStream is = null;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);}// 设置颜色g.setColor(Color.blue);// 设置 Font(字体，字体样式，字体大小) 如font("宋体",Font.BOLD,20)if(sfontbold!=null&&sfontbold.equals("0")){g.setFont(new Font("宋体", Font.BOLD, sforntsize));}else {g.setFont(new Font("宋体", Font.ITALIC, sforntsize));}// 设置透明度 1f 不透明，0.5f半透明，0f完全透明float alpha = transparency;g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,alpha));ImageIcon imgIcon = new ImageIcon(srcImgPath);Image theImg = imgIcon.getImage();int width = theImg.getWidth(null);int height = theImg.getHeight(null);// 第一参数->设置的内容，后面两个参数->文字在图片上的坐标位置(x,y) .g.drawString(logoText, width*((float)sWidth/(float)100), height*(float)sHeight/(float)100);g.dispose();os = new FileOutputStream(targerPath);// 生成图片ImageIO.write(buffImg, "JPG", os);} catch (Exception e) {e.printStackTrace();} finally {try {if (null != is)is.close();} catch (Exception e) {e.printStackTrace();}try {if (null != os)os.close();} catch (Exception e) {e.printStackTrace();}}}}
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