标签:catch stack null 绿色 input oid set cat int
通过MultipartFile传入png图片,并通过BufferedImage进行处理。
@SneakyThrows public void picture(MultipartFile multipartFile) { //读取图片 System.out.println("正在读取..."); BufferedImage bufferedImage = null; try { bufferedImage = ImageIO.read(multipartFile.getInputStream()); } catch (Exception e) { e.printStackTrace(); } int width = bufferedImage.getWidth(); int height = bufferedImage.getHeight(); int minx = bufferedImage.getMinX(); int miny = bufferedImage.getMinY(); //处理图片 System.out.println("正在处理..."); for (int i = minx; i < width; i++) { for (int j = miny; j < height; j++) { int pixel = bufferedImage.getRGB(i, j);//获取颜色 int alpha = pixel >> 24 & 0xff;//获取alpha int red = pixel & 0xff0000 >> 16;//获取红色 int green = pixel & 0xff00 >> 8;//获取绿色 int blue = pixel & 0xff;//获取蓝色 int color = (alpha << 24) | (red << 16) | (green << 8) | blue;//将argb还原成整数 bufferedImage.setRGB(i, j, color);//设置颜色 } } //保存图片 File file = new File("test.png"); ImageIO.write(bufferedImage, "png", file); System.out.println("处理完毕..."); }
Java下BufferedImage处理PNG图片的ARGB
标签:catch stack null 绿色 input oid set cat int
原文地址:https://www.cnblogs.com/chenyangsocool/p/14724184.html