Java压缩解压（tar.gz）

package com.hxm.learn.util;

import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream;

import java.io.*;

/**
 * @ClassName FileUtil
 * @Description {@link 'https://blog.csdn.net/u013066244/article/details/72783575'}
 * @Author hxm
 * @Date 2020-02-29 00:22
 **/
public class FileUtil {

    /**
     * 归档
     * @param entry
     * @throws IOException
     * @author yutao
     * @return
     * @date 2017年5月27日下午1:48:23
     */
    private static String archive(String entry) throws IOException {
        File file = new File(entry);

        TarArchiveOutputStream
                tos = new TarArchiveOutputStream(new FileOutputStream(file.getAbsolutePath() + ".tar"));
        String base = file.getName();
        if(file.isDirectory()){
            archiveDir(file, tos, base);
        }else{
            archiveHandle(tos, file, base);
        }

        tos.close();
        return file.getAbsolutePath() + ".tar";
    }

    /**
     * 递归处理，准备好路径
     * @param file
     * @param tos
     * @param basePath
     * @throws IOException
     * @author yutao
     * @date 2017年5月27日下午1:48:40
     */
    private static void archiveDir(File file, TarArchiveOutputStream tos, String basePath) throws IOException {
        File[] listFiles = file.listFiles();
        for(File fi : listFiles){
            if(fi.isDirectory()){
                archiveDir(fi, tos, basePath + File.separator + fi.getName());
            }else{
                archiveHandle(tos, fi, basePath);
            }
        }
    }

    /**
     * 具体归档处理（文件）
     * @param tos
     * @param fi
     * @param basePath
     * @throws IOException
     * @author yutao
     * @date 2017年5月27日下午1:48:56
     */
    private static void archiveHandle(TarArchiveOutputStream tos, File fi, String basePath) throws IOException {
        TarArchiveEntry tEntry = new TarArchiveEntry(basePath + File.separator + fi.getName());
        tEntry.setSize(fi.length());

        tos.putArchiveEntry(tEntry);

        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(fi));

        byte[] buffer = new byte[1024];
        int read = -1;
        while((read = bis.read(buffer)) != -1){
            tos.write(buffer, 0 , read);
        }
        bis.close();
        tos.closeArchiveEntry();//这里必须写，否则会失败
    }

    /**
     * 把tar包压缩成gz
     * @param path
     * @throws IOException
     * @author yutao
     * @return
     * @date 2017年5月27日下午2:08:37
     */
    public static String compressArchive(String path) throws IOException{
        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(path));

        GzipCompressorOutputStream gcos = new GzipCompressorOutputStream(new BufferedOutputStream(new FileOutputStream(path + ".gz")));

        byte[] buffer = new byte[1024];
        int read = -1;
        while((read = bis.read(buffer)) != -1){
            gcos.write(buffer, 0, read);
        }
        gcos.close();
        bis.close();
        return path + ".gz";
    }

    /**
     * 解压
     * @param archive
     * @author yutao
     * @throws IOException
     * @date 2017年5月27日下午4:03:29
     * */
    private static void unCompressArchiveGz(String archive) throws IOException {

        File file = new File(archive);

        BufferedInputStream bis =
                new BufferedInputStream(new FileInputStream(file));

        String fileName =
                file.getName().substring(0, file.getName().lastIndexOf("."));

        String finalName = file.getParent() + File.separator + fileName;

        BufferedOutputStream bos =
                new BufferedOutputStream(new FileOutputStream(finalName));

        GzipCompressorInputStream gcis =
                new GzipCompressorInputStream(bis);

        byte[] buffer = new byte[1024];
        int read = -1;
        while((read = gcis.read(buffer)) != -1){
            bos.write(buffer, 0, read);
        }
        gcis.close();
        bos.close();

        unCompressTar(finalName);
    }

    /**
     * 解压tar
     * @param finalName
     * @author yutao
     * @throws IOException
     * @date 2017年5月27日下午4:34:41
     */
    private static void unCompressTar(String finalName) throws IOException {

        File file = new File(finalName);
        String parentPath = file.getParent();
        TarArchiveInputStream tais =
                new TarArchiveInputStream(new FileInputStream(file));

        TarArchiveEntry tarArchiveEntry = null;

        while((tarArchiveEntry = tais.getNextTarEntry()) != null){
            String name = tarArchiveEntry.getName();
            File tarFile = new File(parentPath, name);
            if(!tarFile.getParentFile().exists()){
                tarFile.getParentFile().mkdirs();
            }

            BufferedOutputStream bos =
                    new BufferedOutputStream(new FileOutputStream(tarFile));

            int read = -1;
            byte[] buffer = new byte[1024];
            while((read = tais.read(buffer)) != -1){
                bos.write(buffer, 0, read);
            }
            bos.close();
        }
        tais.close();
        file.delete();//删除tar文件
    }


    public static void main(String[] args) throws Exception {
//        String entry = "/Users/hxm/Downloads/temp";//需要压缩的文件夹
//        String archive = archive(entry);//生成tar包
//        String path = compressArchive(archive);//生成gz包
//        System.out.println(path);

        unCompressArchiveGz("/Users/hxm/Downloads/temp.tar.gz");
    }
}

原文地址： java 压缩/解压【tar.gz】

来源：oschina

链接：https://my.oschina.net/itazi/blog/3179456