gif缩略图压缩处理maven项目

package test; import java.awt.Graphics2D; import java.awt.image.BufferedImage; import java.awt.image.IndexColorModel; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import javax.imageio.ImageIO; import org.imgscalr.Scalr; import org.imgscalr.Scalr.Mode; import com.madgag.gif.fmsware.AnimatedGifEncoder; import com.madgag.gif.fmsware.GifDecoder; /** * * @Description : gif处理工具类 * @author liuSir * @date : 2015-3-24上午10:49:15 */ public class GifUtils { public static void main(String[] args) throws IOException { boolean ok = ImageIO.write(createImage(), "gif", new File("C://test.gif")); System.out.println("success=" + ok); } @SuppressWarnings("unused") static BufferedImage createImage() { IndexColorModel cm = createIndexColorModel(); BufferedImage im = new BufferedImage(100, 100, BufferedImage.TYPE_BYTE_INDEXED, cm); Graphics2D g = im.createGraphics(); // g.setColor(new Color(0, 0, 0, 0)); // transparent // g.fillRect(0, 0, 100, 100); // g.setColor(Color.RED); // g.fillRect(0, 0, 50, 50); // g.setColor(Color.GREEN); // g.fillRect(50, 50, 50, 50); // g.dispose(); return im; } static IndexColorModel createIndexColorModel() { BufferedImage ex = new BufferedImage(1, 1, BufferedImage.TYPE_BYTE_INDEXED); IndexColorModel icm = (IndexColorModel) ex.getColorModel(); int SIZE = 256; byte[] r = new byte[SIZE]; byte[] g = new byte[SIZE]; byte[] b = new byte[SIZE]; byte[] a = new byte[SIZE]; icm.getReds(r); icm.getGreens(g); icm.getBlues(b); java.util.Arrays.fill(a, (byte) 255); r[0] = g[0] = b[0] = a[0] = 0; // transparent return new IndexColorModel(8, SIZE, r, g, b, a); } /** * * @Description: 根据图片宽度进行压缩 * @throws * @param srcImgPath 源文件路径 * @param outImgPath 文件输出路径 * @param width 想要压缩的宽度 */ public static void resizeByWidth(File srcFile, String outImgPath,int width){ try { GifDecoder gd = new GifDecoder(); int status = gd.read(new FileInputStream(srcFile)); if (status != GifDecoder.STATUS_OK) { return; } doGifByWidth(outImgPath, width, gd); } catch (Exception e) { e.printStackTrace(); } } /** * * @Description: 根据图片宽度进行压缩 * @throws * @param srcImgPath 源文件路径 * @param outImgPath 文件输出路径 * @param width 想要压缩的宽度 */ public static void resizeByWidth(String srcImgPath, String outImgPath, int width){ try { GifDecoder gd = new GifDecoder(); int status = gd.read(new FileInputStream(new File(srcImgPath))); if (status != GifDecoder.STATUS_OK) { return; } doGifByWidth(outImgPath, width, gd); } catch (Exception e) { e.printStackTrace(); } } private static void doGifByWidth(String outImgPath, int width, GifDecoder gd) throws FileNotFoundException { AnimatedGifEncoder ge = new AnimatedGifEncoder(); OutputStream outputStream = new FileOutputStream(new File(outImgPath)); ge.start(outputStream); ge.setRepeat(0); for (int i = 0; i < gd.getFrameCount(); i++) { BufferedImage frame = gd.getFrame(i); int w = frame.getWidth(); int height = frame.getHeight(); double scale = (double) w / (double) width; height = (int) ((double) height / scale); BufferedImage rescaled = Scalr.resize(frame, Mode.FIT_EXACT, width, height); int delay = gd.getDelay(i); ge.setDelay(delay); ge.addFrame(rescaled); } ge.finish(); try { outputStream.close(); } catch (IOException e) { e.printStackTrace(); } } }