图片加水印JAVA实现

java 代码

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() {

    }

    /**
     * 把图片印刷到图片上
     *
     * @param pressImg --
     *            水印文件
     * @param targetImg --
     *            目标文件
     * @param x
     * @param y
     */
    public final static void pressImage(String pressImg, String targetImg,
            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);

            // 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 - x, height
                    - height_biao - y, wideth_biao, height_biao, null);
            // /
            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="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("d:/test/22.jpg", "d:/test/11.jpg", 20, 20);
    }
}

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• 2007-08-13 17:12
• 浏览 8691
• 评论(4)
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评论

4 楼 lihua2008love 2011-09-26  

为什么报

javax.imageio.IIOException: Can't read input file!
	at javax.imageio.ImageIO.read(ImageIO.java:1275)
	at com.szair.test.ImageUtils.pressImage(ImageUtils.java:43)
	at com.szair.test.ImageUtils.main(ImageUtils.java:108)

不懂、图片路径是对的

3 楼 javay 2008-12-15  

谢谢。

2 楼 hailanc1108 2008-10-10  

不错，谢谢啦.

1 楼 elf8848 2008-10-02  

我看了, 很好, 但水印不是半透明的