java对图片进行压缩和resize缩放的方法

java对图片进行压缩和resize缩放的方法

序

这里展示一下如何对图片进行压缩和resize。分享给大家，具体如下：

压缩

public static boolean compress(String src,String to, float quality) {

boolean rs = true;

// Build param

JPEGEncodeParam param = null;

// Build encoder

File destination = new File(to);

FileOutputStream os = null;

try {

BufferedImage image = ImageIO.read(new File(src));

param = JPEGCodec.getDefaultJPEGEncodeParam(image);

param.setQuality(quality, false);

os = FileUtils.openOutputStream(destination);

JPEGImageEncoder encoder;

if (param != null) {

encoder = JPEGCodec.createJPEGEncoder(os, param);

} else {

return false;

}

encoder.encode(image);

} catch(Exception e){

e.printStackTrace();

rs = false;

}finally {

IOUtils.closeQuietly(os);

}

return rs;

}

resize

WrOckF

public static boolean resize(String src,String to,int newWidth,int newHeight) {

try {

File srcFile = new File(src);

File toFile = new File(to);

BufferedImage img = ImageIO.read(srcFile);

int w = img.getWidth();

int h = img.getHeight();

BufferedImage dimg = new BufferedImage(newWidth, newHeight, img.getType());

Graphics2D g = dimg.createGraphics();

g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);

g.drawImage(img, 0, 0, newWidth, newHeight, 0, 0, w, h, null);

g.dispose();

ImageIO.write(dimg, "jpg", toFile);

} catch (Exception e) {

e.http://printStackTrace();

return false;

}

return true;

}

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