使用ant.jar进行文件zip压缩

 

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[0];if (source.isDirectory()) {files = source.listFiles();} else {files = new File[1];files[0] = source;}String pathName;//存相对路径(相对于待压缩的根目录)byte[] buf = new byte[1024];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[1024];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();}}}