我正在使用Java并组合两个图像。我保存组合图像并想要删除叠加层,但似乎仍有流打开。我不知道关闭它们的方式和方式。
f_overlay
和f_image
都是文件。
// load source images
BufferedImage image = null;
BufferedImage overlay = null;
try {
log.debug(f_image.getAbsolutePath());
log.debug(f_overlay.getAbsolutePath());
image = ImageIO.read(f_image);
overlay = ImageIO.read(f_overlay);
} catch (IOException e) {
log.error(e.getMessage());
}
// create the new image, canvas size is the max. of both image sizes
int w = Math.max(image.getWidth(), overlay.getWidth());
int h = Math.max(image.getHeight(), overlay.getHeight());
BufferedImage combined = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
// paint both images, preserving the alpha channels
Graphics g = combined.getGraphics();
g.drawImage(image, 0, 0, null);
g.drawImage(overlay, 0, 0, null);
// Save as new image
try {
ImageIO.write(combined, "PNG", f_image);
} catch (IOException e) {
log.error(e.getMessage());
}
// we can delete the overlay now
log.debug("Delete overlay: " + f_overlay.delete());
有什么建议吗?
答案 0 :(得分:0)
我的代码中没有任何错误。
但是,如果读取成功,我只会删除文件f_overlay。重要的是,在对文件对象调用delete()之后,不能将该对象用于其他任何内容,因此最好分配f_overlay = null
boolean state = f_overlay.delete();
f_overlay=null;
log.debug("Delete ... "+state);