package com.ots.project.tool.exam;
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import lombok.extern.slf4j.Slf4j;
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import net.coobird.thumbnailator.Thumbnails;
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import javax.imageio.ImageIO;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.math.BigDecimal;
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@Slf4j
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public class PicUtils {
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public static void main(String[] args) {
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boolean flag = PicUtils.commpressPicForScale("/Users/shawnli/Downloads/1.jpg",
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"/Users/shawnli/Downloads/2.jpg", 20, 0.5);
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}
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public static boolean commpressPicForScale(String srcPath, String desPath,
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long desFileSize, double accuracy) {
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if ("".equals(srcPath.trim()) || "".equals(srcPath.trim())) {
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return false;
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}
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try {
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File srcFile = new File(srcPath);
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if (!srcFile.exists()) {
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return false;
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}
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long srcFileSizeJPG = srcFile.length();
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if (srcFileSizeJPG <= desFileSize * 1024) {
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byte[] b = new byte[1024];
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int a = 0;
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File desFile = new File(desPath);
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FileInputStream fis = new FileInputStream(srcFile);
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FileOutputStream fos = new FileOutputStream(desFile);
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while ((a = fis.read(b)) != -1) {
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fos.write(b, 0, a);
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}
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return true;
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}
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Thumbnails.of(srcPath).scale(1f).toFile(desPath);
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commpressPicCycle(desPath, desFileSize, accuracy);
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} catch (Exception e) {
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log.error("失败的文件" + srcPath);
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log.error(e.getMessage());
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return false;
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}
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return true;
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}
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private static void commpressPicCycle(String desPath, long desFileSize,
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double accuracy) throws IOException {
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File srcFileJPG = new File(desPath);
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long srcFileSizeJPG = srcFileJPG.length();
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if (srcFileSizeJPG <= desFileSize * 1024) {
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return;
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}
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BufferedImage bim = ImageIO.read(srcFileJPG);
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int srcWdith = bim.getWidth();
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int srcHeigth = bim.getHeight();
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int desWidth = new BigDecimal(srcWdith).multiply(
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new BigDecimal(accuracy)).intValue();
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int desHeight = new BigDecimal(srcHeigth).multiply(
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new BigDecimal(accuracy)).intValue();
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Thumbnails.of(desPath).size(desWidth, desHeight)
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.outputQuality(accuracy).toFile(desPath);
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commpressPicCycle(desPath, desFileSize, accuracy);
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}
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public static boolean commpressPicForScale(String fileOriginalPath, String filePath) {
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File fileSrcDir = new File(fileOriginalPath);
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File fileDesDir = new File(filePath);
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if (!fileSrcDir.isDirectory() || !fileDesDir.isDirectory()) {
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return false;
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}
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for (File file : fileSrcDir.listFiles()) {
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commpressPicForScale(file.getPath(),
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filePath + file.getName(), 5, 0.5);
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}
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return true;
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}
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}
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