java压缩文件成tar.gz格式

使用ant.jar包（1.6版本），完成tar的打包功能，直接贴代码

import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.util.ArrayList;import java.util.List;import java.util.zip.GZIPOutputStream;import org.apache.tools.tar.TarEntry;import org.apache.tools.tar.TarOutputStream;/* * 功能：压缩文件成tar.gz格式 */public class TarUtils{private static int BUFFER = 1024*4; //缓冲大小private static byte[] B_ARRAY = new byte[BUFFER];/* * 方法功能：打包单个文件或文件夹 * 参数：inputFileName 要打包的文件夹或文件的路径 * targetFileName 打包后的文件路径 */public void execute(String inputFileName, String targetFileName){File inputFile = new File(inputFileName);String base = inputFileName.substring(inputFileName.lastIndexOf("/") + 1);TarOutputStream out = getTarOutputStream(targetFileName);tarPack(out, inputFile, base);try{if (null != out){out.close();}} catch (IOException e){e.printStackTrace();}compress(new File(targetFileName));}/* * 方法功能：打包多个文件或文件夹 * 参数：inputFileNameList 要打包的文件夹或文件的路径的列表 * targetFileName 打包后的文件路径 */public void execute(List<String> inputFileNameList, String targetFileName){TarOutputStream out = getTarOutputStream(targetFileName);for(String inputFileName : inputFileNameList){File inputFile = new File(inputFileName);String base = inputFileName.substring(inputFileName.lastIndexOf("/") + 1);tarPack(out, inputFile, base);}try{if (null != out){out.close();}} catch (IOException e){e.printStackTrace();}compress(new File(targetFileName));}/* * 方法功能：打包成tar文件 * 参数：out 打包后生成文件的流 * inputFile 要压缩的文件夹或文件 * base 打包文件中的路径 */private void tarPack(TarOutputStream out, File inputFile, String base){if (inputFile.isDirectory()) //打包文件夹{packFolder(out, inputFile, base);} else //打包文件{packFile(out, inputFile, base);}}/* * 方法功能：遍历文件夹下的内容，如果有子文件夹，就调用tarPack方法 * 参数：out 打包后生成文件的流 * inputFile 要压缩的文件夹或文件 * base 打包文件中的路径 */private void packFolder(TarOutputStream out, File inputFile, String base){File[] fileList = inputFile.listFiles();try{//在打包文件中添加路径out.putNextEntry(new TarEntry(base + "/"));} catch (IOException e){e.printStackTrace();}base = base.length() == 0 ? "" : base + "/";for (File file : fileList){tarPack(out, file, base + file.getName());}}/* * 方法功能：打包文件 * 参数：out 压缩后生成文件的流 * inputFile 要压缩的文件夹或文件 * base 打包文件中的路径 */private void packFile(TarOutputStream out, File inputFile, String base){TarEntry tarEntry = new TarEntry(base);//设置打包文件的大小，如果不设置，打包有内容的文件时，会报错tarEntry.setSize(inputFile.length());try{out.putNextEntry(tarEntry);} catch (IOException e){e.printStackTrace();}FileInputStream in = null;try{in = new FileInputStream(inputFile);} catch (FileNotFoundException e){e.printStackTrace();}int b = 0;try{while ((b = in.read(B_ARRAY, 0, BUFFER)) != -1){out.write(B_ARRAY, 0, b);}} catch (IOException e){e.printStackTrace();} catch (NullPointerException e){System.err.println("NullPointerException info ======= [FileInputStream is null]");} finally{try{if (null != in){in.close();}if (null != out){out.closeEntry();}} catch (IOException e){}}}/* * 方法功能：把打包的tar文件压缩成gz格式 * 参数：srcFile 要压缩的tar文件路径 */private void compress(File srcFile){ File target = new File(srcFile.getAbsolutePath() + ".gz"); FileInputStream in = null; GZIPOutputStream out = null; try { in = new FileInputStream(srcFile); out = new GZIPOutputStream(new FileOutputStream(target)); int number = 0; while((number = in.read(B_ARRAY, 0, BUFFER)) != -1) { out.write(B_ARRAY, 0, number); } }catch(FileNotFoundException e) { e.printStackTrace(); }catch(IOException e) { e.printStackTrace(); }finally { try { if(in != null) { in.close(); } if(out != null) { out.close(); } }catch(IOException e) { e.printStackTrace(); } }}/* * 方法功能：获得打包后文件的流 * 参数：targetFileName 打包后文件的路径 */private TarOutputStream getTarOutputStream(String targetFileName){//如果打包文件没有.tar后缀名，就自动加上targetFileName = targetFileName.endsWith(".tar")?targetFileName:targetFileName+".tar";FileOutputStream fileOutputStream = null;try{fileOutputStream = new FileOutputStream(targetFileName);} catch (FileNotFoundException e){e.printStackTrace();}BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(fileOutputStream);TarOutputStream out = new TarOutputStream(bufferedOutputStream);//如果不加下面这段，当压缩包中的路径字节数超过100 byte时，就会报错out.setLongFileMode(TarOutputStream.LONGFILE_GNU);return out;}}

 

 

调用时，

String inputFileName1 = "D:/lws";String inputFileName2 = "D:/1.txt";String inputFileName3 = "D:/2.txt";List<String> list = new ArrayList<String>();list.add(inputFileName1);list.add(inputFileName2);list.add(inputFileName3);String targetFileName = "D:/lws.tar";new TarUtils().execute(list, targetFileName);String targetFileName1 = "D:/lws1.tar";new TarUtils().execute(inputFileName1, targetFileName1);