java调用ant进行压缩和解压

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.log4j.Logger;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipOutputStream;

/**
 * zip工具
 * 
 * @author yuanhuiwu
 * 
 */
public class ZipUtils {
	private static Logger log = Logger.getLogger(ZipUtils.class);
	private static final int BUFFER_SIZE = 8 * 1024;

	/**
	 * @param source
	 *            zip源文件
	 * @param dest
	 *            解压保存的目录
	 * @throws IOException
	 *             IO异常
	 */
	public static void unzip(File source, File dest) throws IOException {
		ZipFile zipFile = null;
		try {
			zipFile = new ZipFile(source);
			unzip(zipFile, dest);
		} finally {
			if (zipFile != null) {
				zipFile.close(); // 关闭文件
			}
		}
	}

	/**
	 * 解压zip文件
	 * 
	 * @param source
	 *            zip 源文件
	 * @param dest
	 *            输出目录
	 * @throws IOException
	 *             IO异常
	 */
	@SuppressWarnings("unchecked")
	private static void unzip(ZipFile source, File dest) throws IOException {

		// 创建目录
		if (!dest.exists()) { // 不存在
			dest.mkdirs(); // 创建
		}
		Enumeration<ZipEntry> en = source.getEntries(); // 返回所有条目 Returns all

		while (en.hasMoreElements()) {
			ZipEntry zipEntry = en.nextElement();

			if (zipEntry.isDirectory()) {// 目录，则创建
				File dir = new File(dest, zipEntry.getName());
				if (!dir.exists()) {
					dir.mkdirs();
					dir = null;
				}
				continue;
			}
			// 创建文件
			File file = new File(dest, zipEntry.getName());
			if (file.exists()) {
				file.delete();
			} else if (!file.getParentFile().exists()) {
				file.getParentFile().mkdirs();
			}
			// end 创建文件
			// 写入
			InputStream in = null;
			FileOutputStream out = null;
			try {
				in = source.getInputStream(zipEntry);
				out = new FileOutputStream(file);
				copy(in, out);
			} finally {// 每次写入后都要关闭流,防止占用资源,导致不能其它操作(如删除该文件)!!!!!!
				file = null;
				if (in != null) {
					in.close();
				}
				if (out != null) {
					out.close();
				}
			}
		}
	}

	/**
	 * @param in
	 *            输入流
	 * @param out
	 *            输出流
	 * @throws IOException
	 *             IO异常
	 */
	private static void copy(InputStream in, OutputStream out)
			throws IOException {
		try {
			byte[] buffer = new byte[BUFFER_SIZE];
			int count = 0;
			do {
				if (count != 0) {
					out.write(buffer, 0, count);
				}
				count = in.read(buffer, 0, buffer.length);
			} while (count != -1);
		} finally {
			if (out != null) {
				out.flush();
			}
		}
	}

	/**
	 * 压缩成zip格式
	 * 
	 * @param source
	 *            源文件或文件夹
	 * @param dest
	 *            输出的zip文件
	 * @throws IOException
	 *             IO异常
	 */
	public static void zip(File source,File dest) throws IOException {
		ZipOutputStream out = null;
		FileOutputStream fos = null;
		try {
			if (!dest.getParentFile().exists()) {
				dest.getParentFile().mkdirs();
			}
			if(dest.exists()){
				dest.delete();
			}
			dest.createNewFile();
			
			fos = new FileOutputStream(dest);
			out = new ZipOutputStream(fos);
			// out.setMethod(ZipOutputStream.DEFLATED);
			// out.setLevel(Deflater.BEST_COMPRESSION);
			zip(out, source, null);
		} finally {
			if (out != null) {
				out.close();
			}
			if (fos != null) {
				fos.close();
			}
		}
	}

	/**
	 * 压缩成zip格式
	 * 
	 * @param out
	 *            ZipOutputStream
	 * @param source
	 *            File
	 * @param vpath
	 *            String
	 * @throws IOException
	 *             IO异常
	 */
	private static void zip(ZipOutputStream out, File source, String vpath)
			throws IOException {
		if (source.isDirectory()) { // 目录
			if(vpath == null){
				vpath = source.getName()+"/";
			}else{
				vpath = vpath +"/";
			}
			out.putNextEntry(new ZipEntry(vpath)); // 格式如：dir/
			File[] files = source.listFiles();
			for (int i = 0; i < files.length; i++) {
				zip(out, files[i], vpath + files[i].getName()); // 递归
			}
		} else {// 文件
			if(vpath == null){
				vpath = source.getName();
			}
			ZipEntry ze = new ZipEntry(vpath);
			// ze.setMethod(ZipEntry.DEFLATED);
			out.putNextEntry(ze);

			FileInputStream in = null;
			try {
				in = new FileInputStream(source);
				copy(in, out);
			} finally {
				if (in != null) {
					in.close();
				}
			}
		}
	}
//
//	public static void unzip2(File source, File dest) {
//		Project prj = new Project();
//		Expand expand = new Expand();
//		expand.setProject(prj);
//		expand.setSrc(source);
//		expand.setDest(dest);
//		expand.execute();
//	}
//
//	public static void zip2(File dest, File source) {
//		Project prj = new Project();
//		Zip zip = new Zip();
//		zip.setProject(prj);
//		zip.setDestFile(dest);
//		FileSet fileSet = new FileSet();
//		fileSet.setProject(prj);
//		fileSet.setDir(source);
//		fileSet.setDefaultexcludes(false);
//		zip.addFileset(fileSet);
//		zip.execute();
//	}
}