Java实现图片的镜像处理
作者:互联网
一 获取网络图片并实现流的输出
/**
* 获取网络图
*
* @param url
* @return
*/
public static BufferedImage downloadImage(String url) throws Exception {
log.info("下载网络图片:" + url);
byte[] bytes = HttpsUtils.getBytes(url);
InputStream buffin = new ByteArrayInputStream(bytes, 0, bytes.length);
bytes = null;
BufferedImage result = ImageIO.read(buffin);
return result;
}
二 图片镜像处理(水平翻转)
/**
* 图片水平翻转
*
* @param source 图片源 (为优化内存,原图将会关闭。保留最新的指针)
* @param flipType 翻转类型(1水平翻转,2垂直翻转)默认为1
* @return
*/
public static BufferedImage flipImage(BufferedImage source, Integer flipType) {
log.info("图片水平翻转-开始。" + flipType);
int width = source.getWidth();
int height = source.getHeight();
BufferedImage result = new BufferedImage(width, height, source.getType());
Graphics graphics = result.getGraphics();
try {
if (flipType != null && flipType.equals(2)) {
graphics.drawImage(source, 0, 0, width, height, 0, height, width, 0, null);
} else {
graphics.drawImage(source, 0, 0, width, height, width, 0, 0, height, null);
}
} catch (Exception e) {
log.error("图片水平翻转-异常", e);
throw new CommonException("图片水平翻转-异常");
} finally {
graphics.dispose();
source.flush();
}
log.info("图片水平翻转-结束");
return result;
}
该方法包括垂直翻转,即flipType参数为2的时候,实现图片的倒放。
标签:Java,width,flipType,BufferedImage,height,source,镜像,图片,翻转 来源: https://blog.csdn.net/calm_encode/article/details/119358267