java 图片 批量 压缩 +全部压缩

/*

oldsrc : 原图片地址文件夹 如 'd:/'

newsrc : 压缩后图片地址文件夹 如 'e:/'

widthdist,heightdist : 压缩后的宽和高

createtime 2010-11-25

@auto yijianfeng

*/

public void reduceImgAll(String oldsrc, String newsrc, int widthdist,

int heightdist) {

try {

File file = new File(oldsrc);

if (!file.exists()) {

return;

}

File[] srcfile = file.listFiles();

if (srcfile != null) {

for (int i = 0; i < srcfile.length; i++) {

if (srcfile[i].isFile()

&& (srcfile[i].getName().endsWith(".jpg")

|| srcfile[i].getName().endsWith(".JPG")

|| srcfile[i].getName().endsWith(".gif") || srcfile[i]

.getName().endsWith(".gif"))) {

Image src = javax.imageio.ImageIO.read(srcfile[i]);

BufferedImage tag = new BufferedImage((int) widthdist,

(int) heightdist, BufferedImage.TYPE_INT_RGB);

tag.getGraphics().drawImage(

src.getScaledInstance(widthdist, heightdist,

Image.SCALE_SMOOTH), 0, 0, null);

FileOutputStream out = new FileOutputStream(newsrc

+ srcfile[i].getName());

JPEGImageEncoder encoder = JPEGCodec

.createJPEGEncoder(out);

System.out.println(oldsrc + "/" + srcfile[i].getName());

encoder.encode(tag);

out.close();

} else {

reduceImgAll(oldsrc + srcfile[i].getName(), newsrc,

widthdist, heightdist);

}

}

}

} catch (IOException ex) {

ex.printStackTrace();

}

}