package cc.mrbird.febs.mall.test;
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import com.sun.image.codec.jpeg.JPEGCodec;
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import com.sun.image.codec.jpeg.JPEGEncodeParam;
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import com.sun.image.codec.jpeg.JPEGImageEncoder;
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import javax.imageio.ImageIO;
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import javax.swing.*;
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import java.awt.*;
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import java.awt.image.BufferedImage;
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import java.awt.image.ConvolveOp;
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import java.awt.image.Kernel;
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import java.awt.image.RenderedImage;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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public class imageTest {
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public static void main(String[] args) throws IOException {
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// File originalImage = new File("D:\\image\\out.png");
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// try{
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// RenderedImage rendImage =getGray.gray(ImageIO.read(new File("D:\\image\\input.png")));
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// ImageIO.write(rendImage, "png", originalImage);
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// }catch(IOException e){
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// System.out.println(e);
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// }
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File originalImage = new File("D:\\image\\input.png");
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System.out.println("源文件大小" + originalImage.length());
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File resizedImg1 = new File("D:\\image\\out3.png");
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resize(originalImage, resizedImg1, Integer.parseInt(Long.toString(originalImage.length())), 0.1f);
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System.out.println("0.1转换后文件大小" + resizedImg1.length());
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}
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// ## 遍历文件夹下图片批量压缩
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// public static void main(String[] args) throws IOException {
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// File folder = new File("C:\\Users\\Win\\Desktop\\faceImages");//文件夹路径
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// File[] listOfFiles = folder.listFiles();
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// for (int i = 0; i < listOfFiles.length; i++) {
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// if (listOfFiles[i].isFile()) {
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// File originalImage = listOfFiles[i];
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// System.out.println("源文件大小" + originalImage.length());
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// String fileName = originalImage.getName();
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// File resizedImg1 = new File("C:\\Users\\Win\\Desktop\\productImages\\" + fileName);
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// resize(originalImage, resizedImg1, 64, 0.9f);
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// System.out.println(fileName + "0.8转换后文件大小" + resizedImg1.length());
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// } else if (listOfFiles[i].isDirectory()) {
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// System.out.println("Directory " + listOfFiles[i].getName());
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// }
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// }
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//
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//
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// }
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/**
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* 缩放图片(压缩图片质量，改变图片尺寸)
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* 若原图宽度小于新宽度，则宽度不变！
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* @param newWidth 新的宽度
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* @param quality 图片质量参数 0.7f 相当于70%质量
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*/
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public static void resize(File originalFile, File resizedFile, int newWidth, float quality) throws IOException {
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if (quality > 1) {
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}
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ImageIcon ii = new ImageIcon(originalFile.getCanonicalPath());
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Image i = ii.getImage();
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Image resizedImage = null;
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int iWidth = i.getWidth(null);
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int iHeight = i.getHeight(null);
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if (iWidth < newWidth) {
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newWidth = iWidth;
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}
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if (iWidth > iHeight) {
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resizedImage = i.getScaledInstance(newWidth, (newWidth * iHeight) / iWidth, Image.SCALE_SMOOTH);
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} else {
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resizedImage = i.getScaledInstance((newWidth * iWidth) / iHeight, newWidth, Image.SCALE_SMOOTH);
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}
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Image temp = new ImageIcon(resizedImage).getImage();
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BufferedImage bufferedImage = new BufferedImage(temp.getWidth(null), temp.getHeight(null), BufferedImage.TYPE_INT_RGB);
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Graphics g = bufferedImage.createGraphics();
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g.setColor(Color.white);
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g.fillRect(0, 0, temp.getWidth(null), temp.getHeight(null));
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g.drawImage(temp, 0, 0, null);
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g.dispose();
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float softenFactor = 0.05f;
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float[] softenArray = {0, softenFactor, 0, softenFactor, 1 - (softenFactor * 4), softenFactor, 0, softenFactor, 0};
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Kernel kernel = new Kernel(3, 3, softenArray);
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ConvolveOp cOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);
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bufferedImage = cOp.filter(bufferedImage, null);
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FileOutputStream out = new FileOutputStream(resizedFile);
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JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
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JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bufferedImage);
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param.setQuality(quality, true);
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encoder.setJPEGEncodeParam(param);
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encoder.encode(bufferedImage);
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}
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}
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