Android InputStream Unzip unZip(InputStream is, String filename, String folderPath)

Description

un Zip

License

Open Source License

Declaration

public static boolean unZip(InputStream is, String filename,
            String folderPath) 

Method Source Code

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

import java.io.*;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;

public class Main {
    public static boolean unZip(InputStream is, String filename,
            String folderPath) {//  w  w w  . j a  v a 2 s .  co m
        File file = null;
        FileOutputStream fos = null;
        try {
            file = new File(filename);
            if (!file.exists()) {
                file.createNewFile();
            }
            fos = new FileOutputStream(file);
            byte[] bt = new byte[1024];
            int len = 0;
            while ((len = is.read(bt)) != -1) {
                fos.write(bt, 0, len);
                fos.flush();
            }
            fos.close();
            upZipFile(file, folderPath);
            file.delete();
            return true;
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (file != null && file.exists()) {
                file.delete();

            }
            if (fos != null) {
                try {
                    fos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                is = null;
            }
        }
        return false;
    }

    public static void upZipFile(File zipFile, String folderPath)
            throws ZipException, IOException {

        File desDir = new File(folderPath);
        if (!desDir.exists()) {
            desDir.mkdirs();
        }

        ZipFile zf = new ZipFile(zipFile);
        for (Enumeration<?> entries = zf.entries(); entries
                .hasMoreElements();) {
            ZipEntry entry = ((ZipEntry) entries.nextElement());
            InputStream in = zf.getInputStream(entry);

            if (entry.getName() == null
                    || entry.getName().trim().length() == 0) {
                continue;
            }
            String str = folderPath
                    + File.separator
                    + new String(entry.getName().getBytes("8859_1"),
                            "GB2312");

            File desFile = new File(str);
            if (!desFile.exists()) {
                File fileParentDir = desFile.getParentFile();
                if (!fileParentDir.exists()) {
                    fileParentDir.mkdirs();
                }
                desFile.createNewFile();
            } else {
                desFile.delete();
            }
            OutputStream out = new FileOutputStream(desFile);
            byte buffer[] = new byte[1024];
            int realLength;
            while ((realLength = in.read(buffer)) > 0) {
                out.write(buffer, 0, realLength);
            }
            in.close();
            out.close();

        }
        zf.close();

    }
}

Related

1. unZip(InputStream in, String destDir)
2. unpackZip(InputStream zipStream, String unpackPath)
3. unzip(InputStream fileIn, File dirOut)
4. decompress(InputStream is, OutputStream os)
5. decompress(InputStream is, OutputStream os)