Java Zip File List zipFiles(List files, File output)

Description

Create a ZIP archive of a list of files.

License

Open Source License

Parameter

Parameter	Description
files	the list of files/directories to be archived
output	the ZIP archived file

Declaration

public static void zipFiles(List<File> files, File output) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayDeque;
import java.util.Collections;
import java.util.Comparator;
import java.util.Deque;
import java.util.List;
import java.util.zip.ZipEntry;

import java.util.zip.ZipOutputStream;

public class Main {
    /**/*  ww  w . j  a  va  2s. com*/
     * Create a ZIP archive of a list of files.
     * The input list of files may contains files and/or directories.
     * The algorithm used to browse directories is not recursive.
     * @param files the list of files/directories to be archived
     * @param output the ZIP archived file
     */
    public static void zipFiles(List<File> files, File output) {
        try {
            FileOutputStream fos = new FileOutputStream(output);
            ZipOutputStream zos = new ZipOutputStream(fos);

            Collections.sort(files, new Comparator<File>() {
                @Override
                public int compare(File f1, File f2) {
                    return f1.getAbsolutePath().compareTo(f2.getAbsolutePath());
                }
            });

            File baseDirectory = files.get(0).getParentFile();
            Deque<File> entries = new ArrayDeque<File>(files);

            while (!entries.isEmpty()) {
                File entry = entries.poll();

                if (entry.isDirectory()) {
                    for (File current : entry.listFiles()) {
                        entries.add(current);

                    }

                } else if (entry.isFile()) {
                    ZipEntry ze = new ZipEntry(
                            entry.getAbsolutePath().substring(baseDirectory.getAbsolutePath().length() + 1));
                    //               ZipEntry ze = new ZipEntry(entry.getName());
                    zos.putNextEntry(ze);
                    FileInputStream in = new FileInputStream(entry);

                    byte[] buffer = new byte[1024];
                    int len;
                    while ((len = in.read(buffer)) > 0) {
                        zos.write(buffer, 0, len);

                    }

                    in.close();
                }
            }

            zos.closeEntry();
            zos.close();

        } catch (IOException ioe) {
            ioe.printStackTrace();

        }
    }
}

Related

1. zipFiles(File output, File root, List fileList)
2. zipFiles(File rootDir, File currDir, ZipOutputStream zos)
3. zipFiles(File[] dirList, ZipOutputStream zos)
4. zipFiles(File[] listFiles2Zip, File output)
5. zipFiles(final File outputFile, final File[] files)
6. zipFiles(List files, OutputStream os)
7. zipFiles(List srcfile, File zipfile)
8. ZipFiles(String destination, Vector files)
9. zipFiles(String filename, String[] files)