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package com.xiaobu.base.util;import lombok.extern.slf4j.Slf4j;import java.io.*;import java.nio.file.Files;import java.nio.file.Paths;import java.util.List;import java.util.Objects;import java.util.zip.ZipEntry;import java.util.zip.ZipInputStream;import java.util.zip.ZipOutputStream;/** * @author xiaobu * @version JDK1.8.0_171 * @date on  2019/7/25 10:54 * @description zip压缩解压工具类 */@Slf4jpublic class ZipUtil {
       private static final int BUFFER_SIZE = 4096;    /**     * 功能描述:压缩单个文件     *     * @param filePath, outPut     * @return void     * @author xiaobu     * @date 2019/7/25 10:55     * @version 1.0  file.getName().split("\\.")[0].concat(".zip") windows情况     */    public static void compressSingleFile(String filePath, String outPut) {
           try {
               File file = new File(filePath);            String zipFileName = file.getName().split("\\.")[0].concat(".zip");            System.out.println("zipFileName:" + zipFileName);            System.out.println("1234 = " + outPut + File.separator + zipFileName);            FileOutputStream fos = new FileOutputStream(outPut + File.separator + zipFileName);            ZipOutputStream zos = new ZipOutputStream(fos);            zos.putNextEntry(new ZipEntry(file.getName()));            byte[] bytes = Files.readAllBytes(Paths.get(filePath));            zos.write(bytes, 0, bytes.length);            zos.closeEntry();            zos.close();        } catch (FileNotFoundException ex) {
               System.err.format("The file %s does not exist", filePath);        } catch (IOException ex) {
               System.err.println("I/O error: " + ex);        }    }    /**     * 功能描述:压缩多个文件     *     * @param files, outputStream]     * @return void     * @author xiaobu     * @date 2019/11/27 15:34     * @version 1.0     */    public static void compressZip(List
   
     files, OutputStream outputStream) {
           ZipOutputStream zipOutStream = null;        try {
               //-- 包装成ZIP格式输出流            zipOutStream = new ZipOutputStream(new BufferedOutputStream(outputStream));            // -- 设置压缩方法            zipOutStream.setMethod(ZipOutputStream.DEFLATED);            //-- 将多文件循环写入压缩包            for (int i = 0; i < files.size(); i++) {
                   File file = files.get(i);                FileInputStream filenputStream = new FileInputStream(file);                byte[] data = new byte[(int) file.length()];                filenputStream.read(data);                //-- 添加ZipEntry，并ZipEntry中写入文件流，这里，加上i是防止要下载的文件有重名的导致下载失败                zipOutStream.putNextEntry(new ZipEntry(file.getName()));                zipOutStream.write(data);                filenputStream.close();                zipOutStream.closeEntry();            }        } catch (IOException e) {
               e.printStackTrace();        } finally {
               try {
                   if (Objects.nonNull(zipOutStream)) {
                       zipOutStream.flush();                    zipOutStream.close();                }                if (Objects.nonNull(outputStream)) {
                       outputStream.close();                }            } catch (IOException e) {
                   e.printStackTrace();            }        }    }    /**     * 功能描述:解压     *     * @param zipFilePath, destDirectory]     * @return void     * @author xiaobu     * @date 2019/11/27 15:26     * @version 1.0     */    public static void unzip(String zipFilePath, String destDirectory) throws IOException {
           File destDir = new File(destDirectory);        if (!destDir.exists()) {
               destDir.mkdir();        }        ZipInputStream zipIn = new ZipInputStream(new FileInputStream(zipFilePath));        ZipEntry entry = zipIn.getNextEntry();        // iterates over entries in the zip file        while (entry != null) {
               String filePath = destDirectory + File.separator + entry.getName();            if (!entry.isDirectory()) {
                   // if the entry is a file, extracts it                extractFile(zipIn, filePath);            } else {
                   // if the entry is a directory, make the directory                File dir = new File(filePath);                dir.mkdir();            }            zipIn.closeEntry();            entry = zipIn.getNextEntry();        }        zipIn.close();    }    public static void extractFile(ZipInputStream zipIn, String filePath) throws IOException {
           BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(filePath));        byte[] bytesIn = new byte[BUFFER_SIZE];        int read = 0;        while ((read = zipIn.read(bytesIn)) != -1) {
               bos.write(bytesIn, 0, read);        }        bos.close();    }    public static void main(String[] args) {
   /*        String filePath = "D:\\thw\\8888老地方大饼专卖店2019-07-24现场工作.xlsx";        String outPut = "D:\\thw";        compressSingleFile(filePath,outPut);*/      /*  File file1 = new File("D:\\thw\\1.ftl");        File file2 = new File("D:\\thw\\2.ftl");        List
    
      files = new ArrayList<>();        files.add(file1);        files.add(file2);        try {            FileOutputStream fileOutputStream = new FileOutputStream("D:\\thw\\1.zip");            compressZip(files, fileOutputStream);        } catch (FileNotFoundException e) {            e.printStackTrace();        }*/        long beginTime = System.currentTimeMillis();        String zipPath = "D:\\thw\\test.zip";        String destPath = "D:\\thw\\test";        try {
               unzip(zipPath, destPath);        } catch (IOException e) {
               e.printStackTrace();        }        System.out.println(System.currentTimeMillis() - beginTime);    }}
    
   

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