java 圖片加水印

package com.bomei.image;

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"); }
     */
 
    /**
     * 把圖片印刷到圖片上
     * 
     * @param pressImg --
     *            水印文件
     * @param targetImg --
     *            目標文件
     * @param x
     *            --x座標
     * @param y
     *            --y座標
     */
    public final static void pressImage(String pressImg, String targetImg,
            int x, int y) {
        try {
            //目標文件
            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);
            //水印文件結束
            g.dispose();
            FileOutputStream out = new FileOutputStream(targetImg);
            JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
            encoder.encode(image);
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
    /**
     * 打印文字水印圖片
     * 
     * @param pressText
     *            --文字
     * @param targetImg --
     *            目標圖片
     * @param fontName --
     *            字體名
     * @param fontStyle --
     *            字體樣式
     * @param color --
     *            字體顏色
     * @param fontSize --
     *            字體大小
     * @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="www.qhd.com.cn";
            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("c:/test/safeqrcode.jpg","c:/test/poster.png", 0, 0);
        pressImage("C:\\Users\\g.wang\\Desktop\\Two_Dimension_Code\\safeqrcode.jpg","c:/test/poster.png", 0, 0);
    }
}