import org.apache.commons.compress.archivers.tar.TarArchiveEntry;import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;import org.apache.commons.compress.compressors.CompressorInputStream;import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;import org.apache.commons.io.FileUtils;import org.apache.commons.io.IOUtils;import org.apache.commons.io.LineIterator;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import java.io.*;import java.nio.charset.Charset;public class IOHelper {    public static final Logger LOGGER = LoggerFactory.getLogger(IOHelper.class);    public static void uncompressTarGZ(File tarFile, File dest) throws IOException {        boolean mkdirs = dest.mkdirs();        if (!mkdirs) {            LOGGER.warn("Unable to create directory ‘{}‘", dest.getAbsolutePath());            return;        }        BufferedInputStream inputStream = new BufferedInputStream(new FileInputStream(tarFile));        GzipCompressorInputStream gcis = new GzipCompressorInputStream(inputStream);        try (TarArchiveInputStream tais = new TarArchiveInputStream(gcis)) {            TarArchiveEntry entry;            while ((entry = tais.getNextTarEntry()) != null) {// create a file with the same name as the entry                File desFile = new File(dest, entry.getName());                if (entry.isDirectory()) {                    boolean mkDirs = desFile.mkdirs();                    if (!mkDirs) {                        LOGGER.warn("Unable to create directory ‘{}‘", desFile.getAbsolutePath());                    }                } else {                    boolean createNewFile = desFile.createNewFile();                    if (!createNewFile) {                        LOGGER.warn("Unable to create file ‘{}‘", desFile.getCanonicalPath());                        continue;                    }                    try (BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(desFile));) {//                        IOUtils.copy(tais, bos);                        byte[] btoRead = new byte[1024];                        int len;                        while ((len = tais.read(btoRead)) != -1) {                            bos.write(btoRead, 0, len);                        }                    }                }            }            LOGGER.info("Untar completed successfully!");        }    }    public static void printTarGzFile(File tarFile) throws IOException {        BufferedInputStream bin = new BufferedInputStream(FileUtils.openInputStream(tarFile));        CompressorInputStream cis = new GzipCompressorInputStream(bin);        try (TarArchiveInputStream tais = new TarArchiveInputStream(cis)) {            TarArchiveEntry entry;            while ((entry = tais.getNextTarEntry()) != null) {                if (entry.isDirectory()) {                    LOGGER.warn("dir:{}", entry.getName());                } else {                    int size = (int) entry.getSize();                    byte[] content = new byte[size];                    int readCount = tais.read(content, 0, size);                    LOGGER.info("fileName:{}", entry.getName());                    ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(content, 0, readCount);                    LineIterator iterator = IOUtils.lineIterator(byteArrayInputStream, Charset.forName("utf-8"));                    try {                        while (iterator.hasNext()) {                            LOGGER.info("line:{}", iterator.nextLine());                        }                    } finally {                        LineIterator.closeQuietly(iterator);                    }                }            }            LOGGER.info("===============finish===============");        }    }}