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】
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