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 allwhile (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 dest *            输出的zip文件 * @param source *            源文件 * @throws IOException *             IO异常 */public static void zip(File dest, File source) throws IOException {ZipOutputStream out = null;FileOutputStream fos = null;try {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out.putNextEntry(new ZipEntry(vpath == null ? "/" : vpath + "/")); // 格式如：// dir/File[] files = source.listFiles();for (int i = 0; i < files.length; i++) {zip(out, files[i], (vpath == null ? "" : vpath + "/")+ files[i].getName()); // 递归}} else {// 文件ZipEntry ze = new ZipEntry(vpath == null ? "" : 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();}}}}       /*        //java 直接调用 Ant 命令public static void unzip(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 zip(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();}       */}