package com.hxy.secrets.util;    import java.awt.Color;  import java.awt.Graphics;  import java.awt.Image;  import java.awt.image.BufferedImage;  import java.awt.image.ConvolveOp;  import java.awt.image.Kernel;  import java.io.ByteArrayOutputStream;  import java.io.File;  import java.io.FileOutputStream;  import java.io.IOException;    import javax.imageio.IIOImage;  import javax.imageio.ImageIO;  import javax.imageio.ImageWriteParam;  import javax.imageio.ImageWriter;  import javax.imageio.stream.ImageOutputStream;  import javax.swing.ImageIcon;    public class ImageUtils {    public static byte[] resize(BufferedImage srcBufferedImage, int targetWidth)        throws IOException {      return resize(srcBufferedImage, targetWidth, 1f, false);    }      public static byte[] resize(BufferedImage srcBufferedImage,        int targetWidth, boolean square) throws IOException {      return resize(srcBufferedImage, targetWidth, square);    }      public static byte[] resize(BufferedImage srcBufferedImage,        int targetWidth, float quality, boolean square) throws IOException {      if (quality > 1) {        throw new IllegalArgumentException(            "Quality has to be between 0 and 1");      }      if (square) {        // 正方形，需要提前进行裁剪        int width = srcBufferedImage.getWidth();        int height = srcBufferedImage.getHeight();        if (width > height) {          int x = (width - height) / 2;          srcBufferedImage = srcBufferedImage.getSubimage(x, 0, height,              height);        } else if (width < height) {          int y = (height - width) / 2;          srcBufferedImage = srcBufferedImage.getSubimage(0, y, width,              width);        }      }        Image resizedImage = null;      int iWidth = srcBufferedImage.getWidth();      int iHeight = srcBufferedImage.getHeight();        if (iWidth > iHeight) {        resizedImage = srcBufferedImage.getScaledInstance(targetWidth,            (targetWidth * iHeight) / iWidth, Image.SCALE_SMOOTH);      } else {        resizedImage = srcBufferedImage.getScaledInstance(            (targetWidth * iWidth) / iHeight, targetWidth,            Image.SCALE_SMOOTH);      }        // This code ensures that all the pixels in the image are loaded.      Image temp = new ImageIcon(resizedImage).getImage();        // Create the buffered image.      BufferedImage bufferedImage = new BufferedImage(temp.getWidth(null),          temp.getHeight(null), BufferedImage.TYPE_INT_RGB);        // Copy image to buffered image.      Graphics g = bufferedImage.createGraphics();        // Clear background and paint the image.      g.setColor(Color.white);      g.fillRect(0, 0, temp.getWidth(null), temp.getHeight(null));      g.drawImage(temp, 0, 0, null);      g.dispose();        // Soften.      float softenFactor = 0.05f;      float[] softenArray = { 0, softenFactor, 0, softenFactor,          1 - (softenFactor * 4), softenFactor, 0, softenFactor, 0 };      Kernel kernel = new Kernel(3, 3, softenArray);      ConvolveOp cOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);      bufferedImage = cOp.filter(bufferedImage, null);        // Write the jpeg to a file.        // Encodes image as a JPEG data stream      // JPEGImageEncoder encoder = JPEGCodeca      // .createJPEGEncoder(byteArrayOutputStream);      //      // JPEGEncodeParam param = encoder      // .getDefaultJPEGEncodeParam(bufferedImage);      //      // param.setQuality(quality, true);      //      // encoder.setJPEGEncodeParam(param);      // encoder.encode(bufferedImage);        ImageWriter writer = ImageIO.getImageWritersByFormatName("jpeg").next();      ImageWriteParam param = writer.getDefaultWriteParam();      param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);      param.setCompressionQuality(1.0F); // Highest quality      // Write the JPEG to our ByteArray stream      ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();      ImageOutputStream imageOutputStream = ImageIO          .createImageOutputStream(byteArrayOutputStream);      writer.setOutput(imageOutputStream);      writer.write(null, new IIOImage(bufferedImage, null, null), param);      return byteArrayOutputStream.toByteArray();    }      // Example usage    public static void main(String[] args) throws IOException {        File originalImage = new File("E:/111.jpg");      byte[] bytes = resize(ImageIO.read(originalImage), 100, 1f, true);      FileOutputStream out = new FileOutputStream(new File("E:/66.jpg"));      out.write(bytes);      out.close();      System.out.println("Ok");    }  }