今天有个学生说,他想把他上传的图片加上个水印的功能,以防止别人盗用他的图片。他认为他的图片资料很重要。所以。。。
好,有需求,我们就满足他,以前我也比较少写操作图片的api,所以对图片加水印的功能也一直没接触,不过对于现在网络来说。这些根本就不算什么,上网一搜,就找了几个程序出来,现在我重构了下,使它满足我的要求,现在发布出来,希望可以给有需要的朋友一点帮助。
java 代码
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public final class ImageUtils {
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public ImageUtils() {
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}
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public final static String getPressImgPath(){
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return ApplicationContext.getRealPath("/template/data/util/shuiyin.gif");
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}
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public final static void pressImage(String pressImg, String targetImg, int x, int y) {
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try {
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File _file = new File(targetImg);
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Image src = ImageIO.read(_file);
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int wideth = src.getWidth(null);
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int height = src.getHeight(null);
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BufferedImage image = new BufferedImage(wideth, height,
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BufferedImage.TYPE_INT_RGB);
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Graphics g = image.createGraphics();
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g.drawImage(src, 0, 0, wideth, height, null);
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File _filebiao = new File(pressImg);
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Image src_biao = ImageIO.read(_filebiao);
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int wideth_biao = src_biao.getWidth(null);
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int height_biao = src_biao.getHeight(null);
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g.drawImage(src_biao, wideth - wideth_biao - x, height - height_biao -y, wideth_biao,
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height_biao, null);
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g.dispose();
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FileOutputStream out = new FileOutputStream(targetImg);
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JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
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encoder.encode(image);
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out.close();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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public static void pressText(String pressText, String targetImg, String fontName,int fontStyle, int color, int fontSize, int x, int y) {
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try {
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File _file = new File(targetImg);
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Image src = ImageIO.read(_file);
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int wideth = src.getWidth(null);
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int height = src.getHeight(null);
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BufferedImage image = new BufferedImage(wideth, height,
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BufferedImage.TYPE_INT_RGB);
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Graphics g = image.createGraphics();
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g.drawImage(src, 0, 0, wideth, height, null);
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g.setColor(Color.RED);
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g.setFont(new Font(fontName, fontStyle, fontSize));
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g.drawString(pressText, wideth - fontSize - x, height - fontSize/2 - y);
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g.dispose();
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FileOutputStream out = new FileOutputStream(targetImg);
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JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
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encoder.encode(image);
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out.close();
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} catch (Exception e) {
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System.out.println(e);
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}
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}
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public static void main(String[] args) {
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pressImage("C:/shuiyin/shuiyin.gif", "c:/shuiyin/DSC02342.JPG", 20 ,20);
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}
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}
(责任编辑:代码如诗) |