Android中zip，tar.gz压缩与解压缩

/**
* 递归zip压缩一个文件夹中所有的文件
* zip压缩
*/
private static void compress(File file, com.file.zip.ZipOutputStream out, String basedir)
{
/* 判断是目录还是文件 */
if (file.isDirectory())
{
compressDirectory(file, out, basedir);
}
else
{
compressFile(file, out, basedir);
}
}

/** 压缩一个目录 */
private static void compressDirectory(File dir, com.file.zip.ZipOutputStream out, String basedir)
{
if (!dir.exists()) return;

File[] files = dir.listFiles();
for (int i = 0; i < files.length; i++) {
compress(files[i], out, basedir + dir.getName() + "/");
}
}

/** 压缩一个文件 */
private static void compressFile(File file, com.file.zip.ZipOutputStream out, String basedir)
{
if (!file.exists()) {
return;
}
try {
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
com.file.zip.ZipEntry entry = new com.file.zip.ZipEntry(basedir + file.getName());
out.putNextEntry(entry);
int count;
byte data[] = new byte[1024];
while ((count = bis.read(data)) != -1)
{
out.write(data, 0, count);
}
bis.close();
}
catch (Exception e) {
throw new RuntimeException(e);
}
}

public static void zip(String srcPathName, String zipFileName)
{
File file = new File(srcPathName);
File zipFile = new File(zipFileName);
if (!file.exists()) throw new RuntimeException(srcPathName + "不存在！");
try
{
FileOutputStream fileOutputStream = new FileOutputStream(zipFile);
CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream, new CRC32());
com.file.zip.ZipOutputStream out = new com.file.zip.ZipOutputStream(cos);
out.setEncoding(System.getProperty("sun.jnu.encoding"));//设置文件名编码方式
String basedir = "";
compress(file, out, basedir);
out.close();
}
catch (Exception e)
{
throw new RuntimeException(e);
}
}

/**
* 解压缩zip工具类
* @param file 压缩文件
* @param dir 解压缩*目录*
* @throws IOException
*/
public static void unzip(File file, String dir) throws IOException {

//建立目标目录
File parent = new File(dir);
if (!parent.exists()){
parent.mkdirs();
}
ZipFile zipFile = new ZipFile(file, "GBK");//设置压缩文件的编码方式为GBK

Enumeration<ZipEntry> entris = zipFile.getEntries();
ZipEntry zipEntry = null;
File tmpFile = null;
BufferedOutputStream bos = null;
InputStream is = null;
byte[] buf = new byte[1024];
int len = 0;
while (entris.hasMoreElements()) {
zipEntry = entris.nextElement();

tmpFile = new File(dir + zipEntry.getName());
File father = new File(tmpFile.getParent());
if (!father.exists()){
father.mkdirs();
}
if (zipEntry.isDirectory()) {//当前文件为目录
if (!tmpFile.exists()) {
tmpFile.mkdir();
}
} else {
if (!tmpFile.exists()) {
tmpFile.createNewFile();

4000
}

is = zipFile.getInputStream(zipEntry);

bos = new BufferedOutputStream(new FileOutputStream(tmpFile));
while ((len = is.read(buf)) > 0) {
bos.write(buf, 0, len);
}
bos.flush();
bos.close();
}
}

/**
* 压缩tar.gz包
* @param files    文件
* @param destPath 目的路径
*/
public void doTarGZ(File[] files, String destPath)
throws IOException {
/*
* 定义一个TarArchiveOutputStream 对象
*/
File tarFile = new File(destPath);
FileOutputStream fos = new FileOutputStream(tarFile);
BufferedOutputStream bos = new BufferedOutputStream(fos);
TarArchiveOutputStream taos = new TarArchiveOutputStream(bos);
byte[] buf = new byte[1024];
for (File child : files) {
if (child.isFile()) { // 文件
FileInputStream fis = new FileInputStream(child);
BufferedInputStream bis = new BufferedInputStream(fis);
TarArchiveEntry tae = new TarArchiveEntry(child.getName());
tae.setSize(child.length());
taos.putArchiveEntry(tae);
int len;
while ((len = bis.read(buf)) > 0) {
taos.write(buf, 0, len);
}
bis.close();
taos.flush();
taos.closeArchiveEntry();
continue;
}
}
//建立压缩文件输出流
FileOutputStream gzFile = new FileOutputStream(destPath + ".gz");
//建立gzip压缩输出流
GZIPOutputStream gzout = new GZIPOutputStream(gzFile);
//打开需压缩文件作为文件输入流
File file = new File(destPath);
FileInputStream tarin = new FileInputStream(file);
int len;
while ((len = tarin.read(buf)) != -1) {
gzout.write(buf, 0, len);
}
gzout.close();
gzFile.close();
tarin.close();
//删除tar包保留tar.gz
file.delete();
}

/**
*tar.gz解压缩
*/
public static void doUnTarGz(File srcfile, String destpath)
throws IOException {
byte[] buf = new byte[1024];
FileInputStream fis = new FileInputStream(srcfile);
BufferedInputStream bis = new BufferedInputStream(fis);
GzipCompressorInputStream cis = new GzipCompressorInputStream(bis);
TarArchiveInputStream tais = new TarArchiveInputStream(cis);
TarArchiveEntry tae = null;
int pro = 0;
while ((tae = tais.getNextTarEntry()) != null) {
File f = new File(destpath + "/" + tae.getName());
if (tae.isDirectory()) {
f.mkdirs();
} else {
/*
* 父目录不存在则创建
*/
File parent = f.getParentFile();
if (!parent.exists()) {
parent.mkdirs();
}

FileOutputStream fos = new FileOutputStream(f);
BufferedOutputStream bos = new BufferedOutputStream(fos);
int len;
while ((len = tais.read(buf)) != -1) {
bos.write(buf, 0, len);
}
bos.flush();
bos.close();
}
}
tais.close();
}