Java多层目录打包和解压代码(apache commons compress, io, lang)

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Java多层目录打包和解压代码(apache commons compress, io, lang)

package zip;

import java.io.BufferedOutputStream;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.util.Enumeration;

import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;

import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;

import org.apache.commons.compress.archivers.zip.ZipFile;

import org.apache.commons.io.FileUtils;

import org.apache.commons.io.IOUtils;

import org.apache.commons.lang.StringUtils;

public class Main {

   public static void main(String[] args) throws FileNotFoundException, Exception {

   Main main = new Main("c:/test1.zip");

   main.createZipOut();

   main.packToolFiles("C:/test", "");

   main.closeZipOut();

   main = new Main("c:/test2.zip");

   main.createZipOut();

   main.packToolFiles("C:/test", "test");

   main.closeZipOut();

   Main.unZipToFolder("c:/test1.zip", "c:/test1");



   Main.unZipToFolder("c:/test2.zip", "c:/test2");

   }

   private OutputStream out = null;

   private BufferedOutputStream bos = null;

   private ZipArchiveOutputStream zaos = null;

   private String zipFileName = null;

   public Main(String zipname) {

   this.zipFileName = zipname;

   }

   public void createZipOut() throws FileNotFoundException, IOException {

   File f = new File(zipFileName);

   out = new FileOutputStream(f);

   bos = new BufferedOutputStream(out);

   zaos = new ZipArchiveOutputStream(bos);

   zaos.setEncoding("GBK");

   }

   public void closeZipOut() throws Exception {

   zaos.flush();

   zaos.close();

   bos.flush();

   bos.close();

   out.flush();

   out.close();

   }

   /**

   * 把一个目录打包到zip文件中的某目录

   * @param dirpath 目录绝对地址

   * @param pathName zip中目录

   */

   public void packToolFiles(String dirpath, String pathName) throws FileNotFoundException, IOException {

   if (StringUtils.isNotEmpty(pathName)) {

   pathName = pathName + File.separator;

   }

   packToolFiles(zaos, dirpath, pathName);

   }

   /**

   * 把一个目录打包到一个指定的zip文件中

   * @param dirpath 目录绝对地址

   * @param pathName      zip文件抽象地址

   */

   public void packToolFiles(ZipArchiveOutputStream zaos, String dirpath, String pathName) throws FileNotFoundException, IOException {

   ByteArrayOutputStream tempbaos = new ByteArrayOutputStream();

   BufferedOutputStream tempbos = new BufferedOutputStream(tempbaos);

   File dir = new File(dirpath);

   //返回此绝对路径下的文件

   File[] files = dir.listFiles();

   if (files == null || files.length < 1) {

   return;

   }

   for (int i = 0; i < files.length; i++) {

   //判断此文件是否是一个文件夹

   if (files[i].isDirectory()) {

   packToolFiles(zaos, files[i].getAbsolutePath(), pathName + files[i].getName() + File.separator);

   } else {

   zaos.putArchiveEntry(new ZipArchiveEntry(pathName + files[i].getName()));

   IOUtils.copy(new FileInputStream(files[i].getAbsolutePath()), zaos);

   zaos.closeArchiveEntry();

   }

   }

   tempbaos.flush();

   tempbaos.close();

   tempbos.flush();

   tempbos.close();

   }

   /**

   * 把一个zip文件解压到一个指定的目录中

   * @param zipfilename zip文件抽象地址

   * @param outputdir 目录绝对地址

   */

   public static void unZipToFolder(String zipfilename, String outputdir) throws IOException {

   File zipfile = new File(zipfilename);

   if (zipfile.exists()) {

   outputdir = outputdir + File.separator;

   FileUtils.forceMkdir(new File(outputdir));

   ZipFile zf = new ZipFile(zipfile, "GBK");

   Enumeration zipArchiveEntrys = zf.getEntries();

   while (zipArchiveEntrys.hasMoreElements()) {

   ZipArchiveEntry zipArchiveEntry = (ZipArchiveEntry) zipArchiveEntrys.nextElement();

   if (zipArchiveEntry.isDirectory()) {

   FileUtils.forceMkdir(new File(outputdir + zipArchiveEntry.getName() + File.separator));

   } else {

   IOUtils.copy(zf.getInputStream(zipArchiveEntry), FileUtils.openOutputStream(new File(outputdir + zipArchiveEntry.getName())));

   }

   }

   } else {

   throw new IOException("指定的解压文件不存在：\t" + zipfilename);

   }

   }

}