使用完整的目录结构将zipfile提取到outdir

/*from n o w j a v a . c o m*/

//package com.nowjava;

import java.io.*;


import java.util.zip.ZipEntry;

import java.util.zip.ZipInputStream;


public class Main {

    /***

     * Extract zipfile to outdir with complete directory structure

     * @param zipfile Input .zip file

     * @param outputDirectory Output directory

     */

    public static boolean extract(File zipfile, File outputDirectory) {

        boolean isSuccessful = false;

        try {

            isSuccessful = extract(new FileInputStream(zipfile),

                    outputDirectory);

        } catch (IOException e) {

            e.printStackTrace();

        }

        return isSuccessful;
        /**
        来 自 N o  w  J a v a . c o m - 时  代  Java
        **/

    }


    /***

     * Extract zipfile to outdir with complete directory structure

     * @param zipfile Input .zip file

     * @param outputDirectory Output directory

     */


    public static boolean extract(InputStream zipfile, File outputDirectory) {

        boolean isSuccessful = false;

        try {

            ZipInputStream zin = new ZipInputStream(zipfile);

            ZipEntry entry;

            String name, dir;

            while ((entry = zin.getNextEntry()) != null) {

                name = entry.getName();

                if (entry.isDirectory()) {

                    mkdirs(outputDirectory, name);

                    continue;

                }

                /* this part is necessary because file entry can come before

                 * directory entry where is file located

                 * i.e.:

                 *   /foo/foo.txt

                 *   /foo/

                 */

                dir = dirpart(name);

                if (dir != null) {

                    mkdirs(outputDirectory, dir);

                }

                extractFile(zin, outputDirectory, name);

            }

            zin.close();

            // After the extraction is done - update the flag

            isSuccessful = true;

        } catch (IOException e) {

            e.printStackTrace();

        }

        return isSuccessful;

    }


    private static void mkdirs(File outputDirectory, String path) {

        File d = new File(outputDirectory, path);

        if (!d.exists()) {

            d.mkdirs();

        }

    }


    private static String dirpart(String name) {

        int s = name.lastIndexOf(File.separatorChar);

        return s == -1 ? null : name.substring(0, s);

    }


    private static void extractFile(ZipInputStream in,

            File outputDirectory, String name)