How to Untar a TAR file using Apache Commons

ImportOrg.apache.commons.compress.archivers.tar.TarArchiveEntry;ImportOrg.apache.commons.compress.archivers.tar.TarArchiveInputStream;ImportOrg.apache.commons.compress.compressors.CompressorInputStream;ImportOrg.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;Importorg.apache.commons.io.FileUtils;Importorg.apache.commons.io.IOUtils;ImportOrg.apache.commons.io.LineIterator;ImportOrg.slf4j.Logger;Importorg.slf4j.LoggerFactory;ImportJava.io.*;ImportJava.nio.charset.Charset; Public classIohelper { Public Static FinalLogger Logger = Loggerfactory.getlogger (iohelper.class);  Public Static voidUncompresstargz (file tarfile, file dest)throwsIOException {BooleanMkdirs =Dest.mkdirs (); if(!mkdirs) {Logger.warn ("Unable to create directory ' {} '", Dest.getabsolutepath ()); return; } bufferedinputstream InputStream=NewBufferedinputstream (NewFileInputStream (tarfile)); Gzipcompressorinputstream Gcis=NewGzipcompressorinputstream (InputStream); Try(Tararchiveinputstream Tais =NewTararchiveinputstream (Gcis))            {Tararchiveentry entry;  while((Entry = Tais.getnexttarentry ())! =NULL) {//create a file with the same name as the entryFile Desfile =NewFile (dest, Entry.getname ()); if(Entry.isdirectory ()) {BooleanMkdirs =Desfile.mkdirs (); if(!mkdirs) {Logger.warn ("Unable to create directory ' {} '", Desfile.getabsolutepath ()); }                } Else {                    BooleanCreateNewFile =Desfile.createnewfile (); if(!createnewfile) {Logger.warn ("Unable to create file ' {} '", Desfile.getcanonicalpath ()); Continue; }                    Try(Bufferedoutputstream BOS =NewBufferedoutputstream (NewFileOutputStream (desfile));) {//ioutils.copy (Tais, BOS);                        byte[] Btoread =New byte[1024]; intLen;  while(len = Tais.read (btoread))! =-1) {bos.write (Btoread,0, Len); } }}} logger.info ("Untar completed successfully!"); }    }     Public Static voidPrinttargzfile (File tarfile)throwsIOException {Bufferedinputstream bin=NewBufferedinputstream (Fileutils.openinputstream (tarfile)); Compressorinputstream CIS=NewGzipcompressorinputstream (BIN); Try(Tararchiveinputstream Tais =NewTararchiveinputstream (CIS))            {Tararchiveentry entry;  while((Entry = Tais.getnexttarentry ())! =NULL) {                if(Entry.isdirectory ()) {Logger.warn ("Dir:{}", Entry.getname ()); } Else {                    intSize = (int) entry.getsize (); byte[] content =New byte[size]; intReadcount = tais.read (content, 0, size); Logger.info ("Filename:{}", Entry.getname ()); Bytearrayinputstream Bytearrayinputstream=NewBytearrayinputstream (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==============="); }    }}

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Http://stackoverflow.com/questions/7128171/how-to-compress-decompress-tar-gz-files-in-java

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How to Untar a TAR file using Apache Commons