原-Java压缩解压文件、文件夹的一个工具类
+目录A/目录B/目录C/文件1+目录A/目录B/目录D/文件2

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这种解压的时候如果CD层没有另外的目录，结果与正常的压缩方法没区别，层级目录能正常创建。

但是如果有一个E的空目录和在CD同级的情况，解压完不会有E目录

正常的压缩目录应该为

+目录A+目录A/目录B+目录A/目录B/目录C+目录A/目录B/目录D+目录A/目录B/目录E+目录A/目录B/目录C/文件1+目录A/目录B/目录D/文件2

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附代码:

public final class ZipTools { private int bufferLen = 1024 * 1024; /** * 私有化构造方法，prevents calls from subclass */ private ZipTools() { throw new UnsupportedOperationException(); } private ZipTools(int bufferLen) { this.bufferLen = bufferLen; } public static ZipTools getInstance() { return new ZipTools(1024 * 1024); } public static ZipTools getInstance(int bufferLen) { return new ZipTools(bufferLen); } /** * 用于单文件压缩 */ protected void doCompress(File srcFile, File destFile) throws IOException { ZipArchiveOutputStream out = null; InputStream is = null; try { is = new BufferedInputStream(new FileInputStream(srcFile), bufferLen); out = new ZipArchiveOutputStream(new BufferedOutputStream(new FileOutputStream(destFile), bufferLen)); ZipArchiveEntry entry = new ZipArchiveEntry(srcFile.getName()); entry.setSize(srcFile.length()); out.putArchiveEntry(entry); IOUtils.copy(is, out); out.closeArchiveEntry(); } finally { IOUtils.closeQuietly(is); IOUtils.closeQuietly(out); } } /** * 解压文件 * @param zipFile * @param outDir * @throws IOException * 90s */ public void doDecompress(String zipFilePath, String outDirStr) throws IOException { File zipFile = new File(zipFilePath); File outDir = new File(outDirStr); ZipArchiveInputStream is = null; try { is = new ZipArchiveInputStream(new BufferedInputStream(new FileInputStream(zipFile), bufferLen)); ZipArchiveEntry entry = null; while ((entry = is.getNextZipEntry()) != null) { if (entry.isDirectory()) { File directory = new File(outDir, entry.getName()); directory.mkdirs(); } else { OutputStream os = null; try { os = new BufferedOutputStream(new FileOutputStream(new File(outDir, entry.getName())), bufferLen); IOUtils.copy(is, os); } finally { IOUtils.closeQuietly(os); } } } } finally { IOUtils.closeQuietly(is); } } /** * 解压指定zip文件到目录,使用新方法 * @param outDir 输出到的目录,此目录如果不存在会自动创建 * @param unZipfileName 需要解压的zip文件名 * @throws IOException * 30s */ public static void unZip(String outDirPath, String unZipfilePath) throws IOException { FileOutputStream fileOutStream = null; InputStream inputStream = null; ZipFile zipFile = null; File outDir = new File(outDirPath); File unZipfile = new File(unZipfilePath); if (!unZipfile.exists()) { throw new FileNotFoundException("File to upzip:" + unZipfilePath + " not found!"); } try { zipFile = new ZipFile(unZipfile); Enumeration<?> e = zipFile.getEntries(); while (e.hasMoreElements()) { ZipArchiveEntry entry = (ZipArchiveEntry) e.nextElement(); File file = new File(outDir, entry.getName()); //File file = getRealFileName(outDirPath, entry.getName()); if (entry.isDirectory()) { file.mkdirs(); } else { // 如果指定文件的目录不存在,则创建之. File parent = file.getParentFile(); if (!parent.exists()) { parent.mkdirs(); } try { inputStream = zipFile.getInputStream(entry); fileOutStream = new FileOutputStream(file); IOUtils.copy(inputStream, fileOutStream); } finally { IOUtils.closeQuietly(inputStream); IOUtils.closeQuietly(fileOutStream); } } } } finally { ZipFile.closeQuietly(zipFile); IOUtils.closeQuietly(inputStream); } } /** * 从文件中解压一个指定文件 * @param fileName * @param zipFile * @return * @throws IOException * @throws ZipException */ public InputStream readFileFromSingleFile(ZipFile zipFile, ZipArchiveEntry entry) throws IOException { InputStream inputStream = zipFile.getInputStream(entry); return inputStream; } /** * 把一个目录打包到一个指定的zip文件中 * @param dirStr 目录绝对地址 * @param pathName zip文件内相对结构 * @throws IOException */ private void packFiles(ZipArchiveOutputStream out, File dir, String pathName) throws IOException { InputStream is = null; //返回此绝对路径下的文件 File[] files = dir.listFiles(); if (files == null || files.length < 1) { return; } for (int i = 0; i < files.length; i++) { File zFile = files[i]; out.putArchiveEntry(new ZipArchiveEntry(zFile, pathName + zFile.getName())); //判断此文件是否是一个文件夹 if (zFile.isDirectory()) { packFiles(out, zFile, pathName + zFile.getName() + "/"); } else { try { //out.putArchiveEntry(new ZipArchiveEntry(pathName + files[i].getName())); is = new BufferedInputStream(new FileInputStream(zFile), bufferLen); IOUtils.copy(is, out); } finally { is.close(); } } } } /** * 压缩文件或者文件夹 * @param srcFileStr 待压缩文件或文件夹路径 * @param destFileStr 目标文件路径 * @throws IOException */ public void zip(String srcFileStr, String destFileStr) throws IOException { File destFile = new File(destFileStr); File srcFile = new File(srcFileStr); zip(srcFile, destFile); } /** * 压缩文件 * @param srcFile 待压缩文件或文件夹 * @param destFile目标压缩文件 * @throws IOException */ public void zip(File srcFile, File destFile) throws IOException { ZipArchiveOutputStream out = null; // 如果压缩文件存放目录不存在,则创建之. File pfile = destFile.getParentFile(); if (!pfile.exists()) { pfile.mkdirs(); } //如果是文件 if (srcFile.isFile()) { doCompress(srcFile, destFile); return; } else { try { out = new ZipArchiveOutputStream(new BufferedOutputStream(new FileOutputStream(destFile), bufferLen)); packFiles(out, srcFile, ""); out.closeArchiveEntry(); } finally { IOUtils.closeQuietly(out); } } } /** * 将压缩文件中部分文件压缩到另外一个文件中 */ public void copyEntryToAnother(ZipFile srcFile, File destFile, ArrayList<ZipArchiveEntry> entryList) throws IOException { ZipArchiveOutputStream out = null; FileOutputStream fileOutStream = null; InputStream inputStream = null; //建立临时目录 String tempDirStr = System.getProperty("java.io.tmpdir") + "temp" + File.separatorChar; File tempDir = new File(tempDirStr, String.valueOf(FlowNoGenerator.instance().getFlowNo())); tempDir.mkdirs(); try { //解压 for (ZipArchiveEntry entry : entryList) { File file = new File(tempDir, entry.getName()); if (entry.isDirectory()) { file.mkdirs(); } else { // 如果指定文件的目录不存在,则创建之. File parent = file.getParentFile(); if (!parent.exists()) { parent.mkdirs(); } try { inputStream = srcFile.getInputStream(entry); fileOutStream = new FileOutputStream(file); IOUtils.copy(inputStream, fileOutStream); } finally { IOUtils.closeQuietly(inputStream); IOUtils.closeQuietly(fileOutStream); } } } //压缩 zip(tempDir, destFile); } finally { FileUtils.deleteQuietly(tempDir); } IOUtils.closeQuietly(out); } /** * 将压缩文件中部分文件压缩到另外一个文件中 */ @Deprecated public void copyEntryToAnotherOld(ZipFile srcFile, File destFile, ArrayList<ZipArchiveEntry> entryList) { ZipArchiveOutputStream out = null; // 如果指定文件的目录不存在,则创建之. File parent = destFile.getParentFile(); if (!parent.exists()) { parent.mkdirs(); } try { out = new ZipArchiveOutputStream(new BufferedOutputStream(new FileOutputStream(destFile), bufferLen)); for (ZipArchiveEntry entry : entryList) { InputStream in = srcFile.getInputStream(entry); if (in != null) { IOUtils.copy(in, out); out.putArchiveEntry(new ZipArchiveEntry(entry.getName())); } } // 必须的 out.closeArchiveEntry(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (ZipException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } IOUtils.closeQuietly(out); }}

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