ant.jar解、压缩zip例子
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.tools.zip.ZipEntry;import org.apache.tools.zip.ZipFile;import org.apache.tools.zip.ZipOutputStream;/** * 功能：* 1 、实现把指定文件夹下的所有文件压缩为指定文件夹下指定 zip 文件* 2 、实现把指定文件夹下的 zip 文件解压到指定目录下 */public class ZipUtils {public static void main(String[] args) {zip ("D:\\zip测试", "D:\\测试结果.zip");unZip("D:\\测试结果.zip", "D:\\解压结果");}/** * 功能：把 sourceDir 目录下的所有文件进行 zip 格式的压缩，保存为指定 zip 文件 * @param sourceDir * @param zipFile */public static void zip(String sourceDir, String zipFile) {OutputStream os;try {os = new FileOutputStream(zipFile);BufferedOutputStream bos = new BufferedOutputStream(os);ZipOutputStream zos = new ZipOutputStream(bos);File file = new File(sourceDir);String basePath = null;if (file.isDirectory()) {basePath = file.getPath();} else {//直接压缩单个文件时，取父目录basePath = file.getParent();}zipFile(file, basePath, zos);zos.closeEntry();zos.close();} catch (Exception e) {e.printStackTrace();}}/** * 功能：执行文件压缩成zip文件 * @param source * @param basePath待压缩文件根目录 * @param zos */private static void zipFile(File source, String basePath,ZipOutputStream zos) {File[] files = new File;if (source.isDirectory()) {files = source.listFiles();} else {files = new File;files = source;}String pathName;//存相对路径(相对于待压缩的根目录)byte[] buf = new byte;int length = 0;try {for (File file : files) {if (file.isDirectory()) {pathName = file.getPath().substring(basePath.length() + 1)+ "/";zos.putNextEntry(new ZipEntry(pathName));zipFile(file, basePath, zos);} else {pathName = file.getPath().substring(basePath.length() + 1);InputStream is = new FileInputStream(file);BufferedInputStream bis = new BufferedInputStream(is);zos.putNextEntry(new ZipEntry(pathName));while ((length = bis.read(buf)) > 0) {zos.write(buf, 0, length);}is.close();}}} catch (Exception e) {e.printStackTrace();}}/** * 功能：解压 zip 文件，只能解压 zip 文件 * @param zipfile * @param destDir */public static void unZip(String zipfile, String destDir) {destDir = destDir.endsWith("\\") ? destDir : destDir + "\\";byte b[] = new byte;int length;ZipFile zipFile;try {zipFile = new ZipFile(new File(zipfile));Enumeration enumeration = zipFile.getEntries();ZipEntry zipEntry = null;while (enumeration.hasMoreElements()) {zipEntry = (ZipEntry) enumeration.nextElement();File loadFile = new File(destDir + zipEntry.getName());if (zipEntry.isDirectory()) {loadFile.mkdirs();} else {if (!loadFile.getParentFile().exists()){loadFile.getParentFile().mkdirs();}OutputStream outputStream = new FileOutputStream(loadFile);InputStream inputStream = zipFile.getInputStream(zipEntry);while ((length = inputStream.read(b)) > 0)outputStream.write(b, 0, length);}}} catch (IOException e) {e.printStackTrace();}}}转自：http://log-cd.iteye.com/blog/585647
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