1.编写 工具类 ZipUtil

package com.susoft.utils;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Enumeration;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;public class ZipUtils {private static final Logger logger = LoggerFactory.getLogger(ZipUtils.class);private ZipUtils(){// 私用构造主法.因为此类是工具类.}/*** 解压zip文件* * @param zipFileName*            待解压的zip文件路径，例如：c:\\a.zip* * @param outputDirectory*            解压目标文件夹,例如：c:\\a\*/public static void unZip(String zipFileName, String outputDirectory)throws Exception {logger.debug("开始解压 ["+zipFileName+"] 到 ["+outputDirectory+"]");org.apache.tools.zip.ZipFile zipFile = new org.apache.tools.zip.ZipFile(zipFileName);try {Enumeration<?> e = zipFile.getEntries();org.apache.tools.zip.ZipEntry zipEntry = null;createDirectory(outputDirectory, "");while (e.hasMoreElements()) {zipEntry = (org.apache.tools.zip.ZipEntry) e.nextElement();logger.debug("解压：" + zipEntry.getName());if (zipEntry.isDirectory()) {String name = zipEntry.getName();name = name.substring(0, name.length() - 1);File f = new File(outputDirectory + File.separator + name);f.mkdir();logger.debug("创建目录：" + outputDirectory + File.separator + name);} else {String fileName = zipEntry.getName();fileName = fileName.replace('\\', '/');if (fileName.indexOf("/") != -1) {createDirectory(outputDirectory, fileName.substring(0,fileName.lastIndexOf("/")));fileName = fileName.substring(fileName.lastIndexOf("/") + 1,fileName.length());}File f = new File(outputDirectory + File.separator+ zipEntry.getName());f.createNewFile();InputStream in = zipFile.getInputStream(zipEntry);FileOutputStream out = new FileOutputStream(f);byte[] by = new byte[1024];int c;while ((c = in.read(by)) != -1) {out.write(by, 0, c);}in.close();out.close();}}logger.debug("解压 ["+zipFileName+"] 完成！");} catch (Exception ex) {System.out.println(ex.getMessage());} finally {zipFile.close();}}/*** 创建目录* @author hezhao* @Time   2017年7月28日 下午7:10:05* @param directory* @param subDirectory*/private static void createDirectory(String directory, String subDirectory) {String dir[];File fl = new File(directory);try {if (subDirectory == "" && fl.exists() != true) {fl.mkdir();} else if (subDirectory != "") {dir = subDirectory.replace('\\', '/').split("/");for (int i = 0; i < dir.length; i++) {File subFile = new File(directory + File.separator + dir[i]);if (subFile.exists() == false)subFile.mkdir();directory += File.separator + dir[i];}}} catch (Exception ex) {System.out.println(ex.getMessage());}}  }

编写测试类

import org.junit.Test;public class BeanTest {@Testpublic void test() {ZipUtils  zp = new ZipUtils ();zo.unZip(xxx,yyy);}