java 实现图片加水印_兔十二的博客_java 加水印

java实现图片加水印

/**
     * @param args
     */
    public static void main(String[] args) {
    	//需要加水印的图片
        String srcImgPath = "D:\photo\test.jpeg";
        String logoText = "XXXX科技有限公司";
        String targerPath = "D:\photo\test\test.jpeg";

        String targerPath2 = "D:\photo\test\test01.jpeg";

        // 给图片添加水印
//        markByText(logoText, srcImgPath, targerPath);

        // 给图片添加水印,水印旋转6
        markByText(logoText, srcImgPath, targerPath2, 6);
    }

    /**
     * 给图片添加水印
     * @param logoText
     * @param srcImgPath
     * @param targerPath
     */
    public static void markByText(String logoText, String srcImgPath,
                                  String targerPath) {
        markByText(logoText, srcImgPath, targerPath, null);
    }

    /**
     * 给图片添加水印、可设置水印的旋转角度
     * @param logoText
     * @param srcImgPath
     * @param targerPath
     * @param degree
     */
    public static void markByText(String logoText, String srcImgPath,
                                  String targerPath, Integer degree) {
        // 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
            // Graphics g= buffImg.getGraphics();
            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);
            }

            // 设置颜色透明度
            g.setColor(new Color(155, 155, 155, 155));

            // 设置 Font
            g.setFont(new Font("宋体", Font.BOLD, 80));

            float alpha = 0.5f;
            g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
                    alpha));

            // 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, 260, 160);

            g.dispose();

            os = new FileOutputStream(targerPath);

            // 生成图片
            ImageIO.write(buffImg, "JPG", os);

            System.out.println("图片完成添加文字印章。。。。。。");
        } 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();
            }
        }
    }
/**
     * @param args