/**
* 给图片添加水印、可设置水印图片旋转角度
*
* @param iconPath
* 水印图片路径
* @param srcImgPath
* 源图片路径
* @param targerPath
* 目标图片路径
* @param degree
* 水印图片旋转角度
*/
@RequestMapping("/markImageByIcon")
@ResponseBody
public static void markImageByIcon(String iconPath, String srcImgPath, String targerPath, Integer degree) {
iconPath ="C:\\Users\\Administrator\\Desktop\\temp_tljsb\\logo.png" ;
srcImgPath ="C:\\Users\\Administrator\\Desktop\\temp_tljsb\\20191227140922.jpg" ;
targerPath ="C:\\Users\\Administrator\\Desktop\\temp_tljsb\\test.jpg" ;
File file =new File(targerPath);
if(!file.exists()){
try {
file.createNewFile() ;
}catch (IOException e) {
e.printStackTrace();
}
}
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);
}
// 水印图象的路径 水印一般为gif或者png的，这样可设置透明度
ImageIcon imgIcon =new ImageIcon(iconPath);
// 得到Image对象。
Image img = imgIcon.getImage();
float alpha =0.8f;// 透明度
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));
// 表示水印图片的位置
g.drawImage(img,0,0,null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
g.dispose();
os =new FileOutputStream(targerPath);
// 生成图片
ImageIO.write(buffImg,"JPG", os);
System.out.println("图片完成添加Icon印章。。。。。。");
}catch (Exception e) {
e.printStackTrace();
}finally {
try {
if (null != os)
os.close();
}catch (Exception e) {
e.printStackTrace();
}
}
}