scale.java

Gif图片缩放代码

package org.signalon.image;

import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

public class Scale {

	public static void scale(String source, String result, int scale,
			boolean flag) throws IOException {
		BufferedImage src = ImageIO.read(new File(source));
		int width = src.getWidth();
		int height = src.getHeight();
		if (flag == true) {
			width *= scale;
			height *= scale;
		} else {
			width /= scale;
			height /= scale;
		}
		Image image = src.getScaledInstance(width, height, Image.SCALE_DEFAULT);
		BufferedImage dest = new BufferedImage(width, height,
				BufferedImage.TYPE_INT_RGB);
		Graphics g = dest.getGraphics();
		g.drawImage(image, 0, 0, null);
		g.dispose();
		ImageIO.write(dest, "JPEG", new File(result));
	}

	public static void main(String[] args) throws IOException {
		scale("E:/50828_files/img200604171307580683.jpg", "c:/abcdefg.jpg", 2,
				false);
	}
}