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java对图片进行压缩和resize缩放的方法

2024-07-13 10:10:22
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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

java;">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

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.printStackTrace();      return false;    }    return true;  }

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