网上有关压缩和解压zip包的博文一大堆，我随便找了一个。看了看，依照自己的须要改动了一下，与各位分享一下，希望各位大神指正：
package com.wangpeng.utill;import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;/*** @author wangpeng*/
public class ToolOfZip {/*** 解压zip包* @param inputPath 被解压的zip包的路径* @param targetPath 被解压到的文件夹* @param isClear 是否清楚已有文件夹*/public static void unZip(String inputPath,String targetPath, boolean isClear) {try {if (null == targetPath || "".equals(targetPath)) {targetPath = inputPath.substring(0,inputPath.lastIndexOf("."));} ZipFile zipFile = new ZipFile(new File(inputPath));Enumeration<? extends ZipEntry> entrys = zipFile.entries();while (entrys.hasMoreElements()) {ZipEntry entry = entrys.nextElement();String name = entry.getName();// aaa\testdir\xxxxx\eee.txtString strTargetPath=targetPath+"/"+name;String strTargetDir=strTargetPath.substring(0, strTargetPath.lastIndexOf(File.separator));if (entry.isDirectory()) {File dir = new File(strTargetPath);if (!dir.exists()) {dir.mkdirs();}} else {File dir = new File(strTargetDir);if (!dir.exists()) {dir.mkdirs();}File file = new File(strTargetPath);if (file.exists() && isClear) {file.delete();}if (!file.exists()) {InputStream in = zipFile.getInputStream(entry);ToolOfFile.copyFile(in, file.getAbsolutePath());}}}} catch (ZipException ex) {ex.printStackTrace();} catch (IOException ex) {ex.printStackTrace();} catch (Exception e) {e.printStackTrace();}}/*** 创建ZIP文件* * @param sourcePath* 文件或文件夹路径* @param zipPath* 生成的zip文件存在路径（包含文件名称）*/public static void createZip(String sourcePath, String zipPath) {FileOutputStream fos = null;ZipOutputStream zos = null;try {fos = new FileOutputStream(zipPath);zos = new ZipOutputStream(fos);writeZip(new File(sourcePath), "", zos);} catch (FileNotFoundException e) {e.printStackTrace();} finally {try {if (zos != null) {zos.close();}} catch (IOException e) {e.printStackTrace();}}}private static void writeZip(File inFile, String parentPath,ZipOutputStream zipOutStream) {if (inFile.exists()) {if (inFile.isDirectory()) {parentPath += inFile.getName() + File.separator;File[] files = inFile.listFiles();for (File file : files) {writeZip(file, parentPath, zipOutStream);}} else {FileInputStream fileInStream = null;try {fileInStream = new FileInputStream(inFile);ZipEntry entry = new ZipEntry(parentPath + inFile.getName());zipOutStream.putNextEntry(entry);byte[] buff = new byte[1024];int len;while ((len = fileInStream.read(buff)) != -1) {zipOutStream.write(buff, 0, len);zipOutStream.flush();}} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} finally {try {if (fileInStream != null) {fileInStream.close();}} catch (IOException e) {e.printStackTrace();}}}}}public static void main(String[] args) {String oldPath = "F:/test/ddd/";String newPath = "F:/test/ccc.zip";// ToolOfZip.createZip(oldPath, newPath);//ToolOfZip.unZip(newPath, null, false);System.out.println();System.out.println("---------ok----------");}
}