JAVA给图片添加水印

package com.nkl.waterMarkTest;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;/*** 本类的作用是给图片添加水印（文字或图片）* 可以设置水印的位置，但不可以设置水印的透明度* @author 聂昆仑**/public class WaterMark {/*** 把水印印刷到图片上（自定义位置）* @param oldfile 原图片* @param newfile 生成的新图片* @param pressImg --水印图片* @param x* @param y*/public final static void pressImage(String oldfile, String newfile,String pressImg,int x,int y) { try {//绘制目标文件File _file = new File(oldfile);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);//绘制水印文件File _filebiao = new File(pressImg);Image src_biao = ImageIO.read(_filebiao);//设置水印位置g.drawImage(src_biao, x, y, src_biao.getWidth(null), src_biao.getHeight(null), null);g.dispose();//生成图片FileOutputStream out = new FileOutputStream(newfile);JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);encoder.encode(image);out.close();} catch (Exception e) {e.printStackTrace();}}/*** 把水印印刷到图片上（有固定位置可选）* @param oldfile 原图片* @param newfile 生成的新图片* @param pressImg --水印图片* @param position --水印位置*/public final static void pressImage(String oldfile, String newfile,String pressImg,int position) { try {//绘制目标文件File _file = new File(oldfile);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);//绘制水印文件File _filebiao = new File(pressImg);Image src_biao = ImageIO.read(_filebiao);//设置水印位置setPressImgPosition(src, src_biao, g, position);g.dispose();//生成图片FileOutputStream out = new FileOutputStream(newfile);JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);encoder.encode(image);out.close();} catch (Exception e) {e.printStackTrace();}}/*** 设置水印图片位置* @param src 原图片* @param src_biao 水印图片* @param g 画笔* @param position 水印位置*/private static void setPressImgPosition(Image src,Image src_biao,Graphics g,int position) {switch (position) {//左上角case 0:g.drawImage(src_biao, 0, 0, src_biao.getWidth(null), src_biao.getHeight(null), null);break;//左下角case 1:g.drawImage(src_biao, 0, src.getHeight(null)-src_biao.getHeight(null), src_biao.getWidth(null), src_biao.getHeight(null), null);break;//右上角case 2:g.drawImage(src_biao, src.getWidth(null)-src_biao.getWidth(null), 0, src_biao.getWidth(null), src_biao.getHeight(null), null);break;//右下角case 3:g.drawImage(src_biao, src.getWidth(null)-src_biao.getWidth(null), src.getHeight(null)-src_biao.getHeight(null), src_biao.getWidth(null), src_biao.getHeight(null), null);break;//居中case 4:g.drawImage(src_biao, (src.getWidth(null)-src_biao.getWidth(null)) / 2,(src.getHeight(null)-src_biao.getHeight(null)) / 2, src_biao.getWidth(null), src_biao.getHeight(null), null);break;default:break;}}/*** 打印文字水印（自定义位置）* @param oldfile 原图片* @param newfile 生成的新图片* @param pressText --文字* @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 -- 偏移量*/public static void pressText(String oldfile, String newfile,String pressText, String fontName, int fontStyle, Color color, int fontSize, int x,int y) {try {//绘制原图片File _file = new File(oldfile);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);//绘制文字g.setColor(color);g.setFont(new Font(fontName, fontStyle, fontSize));g.drawString(pressText, wideth - fontSize - x, height - fontSize/ 2 - y);g.dispose();//生成图片FileOutputStream out = new FileOutputStream(newfile);JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);encoder.encode(image);out.close();} catch (Exception e) {System.out.println(e);}}/*** 打印文字水印（有固定位置可选）* @param oldfile 原图片* @param newfile 生成的新图片* @param pressText --文字* @param fontName -- 字体名* @param fontStyle -- 字体样式* @param color -- 字体颜色* @param fontSize -- 字体大小* @param position -- 偏移量*/public static void pressText(String oldfile, String newfile,String pressText, String fontName, int fontStyle, Color color, int fontSize, int position) {try {//绘制原图片File _file = new File(oldfile);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);//绘制文字g.setColor(color);g.setFont(new Font(fontName, fontStyle, fontSize));//设置文字位置setPressTxtPosition(src, pressText, fontSize, g, position);g.dispose();//生成图片FileOutputStream out = new FileOutputStream(newfile);JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);encoder.encode(image);out.close();} catch (Exception e) {System.out.println(e);}}/*** 设置水印文字位置* @param src 原图片* @param src_biao 水印图片* @param g 画笔* @param position 水印位置*/private static void setPressTxtPosition(Image src,String pressText,int fontSize,Graphics g,int position) {//取文字长度int len=pressText.length();switch (position) {//左上角case 0:g.drawString(pressText, 0, fontSize/2);break;//左下角case 1:g.drawString(pressText, 0, src.getHeight(null)-fontSize/2);break;//右上角case 2:g.drawString(pressText, src.getWidth(null)-fontSize*len, fontSize/2);break;//右下角case 3:g.drawString(pressText, src.getWidth(null)-fontSize*len, src.getHeight(null)-fontSize/2);break;//居中case 4:g.drawString(pressText, (src.getWidth(null)-fontSize*len)/2, src.getHeight(null)/2);break;default:break;}}public static void main(String[] args) {pressText("E:\\a.jpg", "E:\\a3.jpg", "中国人", "Helvetica", Font.PLAIN, Color.RED, 14, 3);}}。