Java压缩类库的使用 3.Apache Ant中的打包、压缩类库

　　inkfish原创，请勿商业性质转载，转载请注明来源（http://blog.csdn.net/inkfish）。
　　这里需要关注的是BZIP2格式，经过测试，总是无法正确压缩，原因未知，而apache commons bzip2格式的文件压缩正常。（来源：http://blog.csdn.net/inkfish）
Ant ZIP压缩：（来源：http://blog.csdn.net/inkfish）
package study.inkfish.compress;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import org.apache.commons.io.IOUtils;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipOutputStream;
public class AntZipCompress extends Compress {
@Override
protected void doCompress(File srcFile, File destFile) throws IOException {
ZipOutputStream zout = null;
InputStream is = null;
try {
is = new BufferedInputStream(new FileInputStream(srcFile), bufferLen);
zout = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(destFile), bufferLen));
zout.putNextEntry(new ZipEntry(srcFile.getName()));
IOUtils.copy(is, zout);
zout.closeEntry();
} finally {
IOUtils.closeQuietly(is);
IOUtils.closeQuietly(zout);
}
}
@Override
protected void doDecompress(File srcFile, File destDir) throws IOException {
ZipFile zipFile = new ZipFile(srcFile);
try {
@SuppressWarnings("unchecked")
Enumeration<ZipEntry> enums = zipFile.getEntries();
while (enums.hasMoreElements()) {
ZipEntry entry = enums.nextElement();
InputStream is = new BufferedInputStream(zipFile.getInputStream(entry), bufferLen);
OutputStream os = null;
try {
os = new BufferedOutputStream(new FileOutputStream(new File(destDir, entry.getName())), bufferLen);
IOUtils.copy(is, os);
} finally {
IOUtils.closeQuietly(is);
IOUtils.clo