Java代碼中解壓RAR文件

import java.io.File;
import java.io.FileOutputStream;

import de.innosystec.unrar.Archive;
import de.innosystec.unrar.rarfile.FileHeader;

public class UnRARTools {

	public void unrar(File sourceRar, File destDir) throws Exception {
		Archive archive = null;
		FileOutputStream fos = null;
		System.out.println("Starting...");
		try {
			archive = new Archive(sourceRar);
			FileHeader fh = archive.nextFileHeader();
			int count = 0;
			File destFileName = null;
			while (fh != null) {
				System.out.println((++count) + ") " + fh.getFileNameString());
				String compressFileName = fh.getFileNameString().trim();
				destFileName = new File(destDir.getAbsolutePath() + "/"	+ compressFileName);
				if (fh.isDirectory()) {
					if (!destFileName.exists()) {
						destFileName.mkdirs();
					}
					fh = archive.nextFileHeader();
					continue;
				} 
				if (!destFileName.getParentFile().exists()) {
					destFileName.getParentFile().mkdirs();
				}
				fos = new FileOutputStream(destFileName);
				archive.extractFile(fh, fos);
				fos.close();
				fos = null;
				fh = archive.nextFileHeader();
			}

			archive.close();
			archive = null;
			System.out.println("Finished !");
		} catch (Exception e) {
			throw e;
		} finally {
			if (fos != null) {
				try {
					fos.close();
					fos = null;
				} catch (Exception e) {
					//ignore
				}
			}
			if (archive != null) {
				try {
					archive.close();
					archive = null;
				} catch (Exception e) {
					//ignore
				}
			}
		}
	}

}

需要引用到以下兩個lib.
java-unrar-0.5.jar
http://www.java2s.com/Code/JarDownload/java/java-unrar-0.5.jar.zip
apache-commons-logging.jar
http://www.java2s.com/Code/JarDownload/apache-commons/apache-commons-logging.jar.zip