压缩文件

private ZipInputStream zipIn; // 解压Zip private ZipOutputStream zipOut; // 压缩Zip private ZipEntry zipEntry; private static int bufSize; // size of bytes private byte[] buf; private int readedBytes; // 压缩文件夹内的文件 public void doZip(String zipDirectory) {// zipDirectoryPath:需要压缩的文件夹名 File file; File zipDir; zipDir = new File(zipDirectory); String zipFileName = zipDirectory + ".zip";// 压缩后生成的zip文件名 try { this.zipOut = new ZipOutputStream(new BufferedOutputStream( new FileOutputStream(zipFileName))); handleDir(zipDir, this.zipOut); this.zipOut.close(); } catch (Exception ioe) { ioe.printStackTrace(); } } // 由doZip调用,递归完成目录文件读取 private void handleDir(File dir, ZipOutputStream zipOut) throws Exception { FileInputStream fileIn; File[] files; files = dir.listFiles(); if (files.length == 0) {// 如果目录为空,则单独创建之. // ZipEntry的isDirectory()方法中,目录以"/"结尾. this.zipOut.putNextEntry(new ZipEntry(dir.toString() + "/")); this.zipOut.closeEntry(); } else {// 如果目录不为空,则分别处理目录和文件. for (File fileName : files) { if (fileName.isDirectory()) { handleDir(fileName, this.zipOut); } else { fileIn = new FileInputStream(fileName); String name = dir.getName(); // 生成的压缩包存放在原目录下 this.zipOut.putNextEntry(new ZipEntry(name + "/" + fileName.getName().toString())); // 此方法存放在该项目目录下 // this.zipOut.putNextEntry(new // ZipEntry(fileName.toString())); while ((this.readedBytes = fileIn.read(this.buf)) > 0) { this.zipOut.write(this.buf, 0, this.readedBytes); } this.zipOut.closeEntry(); } } } } // 解压指定zip文件 public void unZip(String unZipfileName) {// unZipfileName需要解压的zip文件名 FileOutputStream fileOut; File file; String f = unZipfileName.substring(0, unZipfileName.length() - 4); File ff = new File(f); try { this.zipIn = new ZipInputStream(new BufferedInputStream( new FileInputStream(unZipfileName))); while ((this.zipEntry = this.zipIn.getNextEntry()) != null) { file = new File(this.zipEntry.getName()); if (this.zipEntry.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(); } if (!ff.exists()) { ff.mkdir(); } fileOut = new FileOutputStream(f + "/" + file.getName()); // fileOut = new FileOutputStream(file); 此方法存放到该项目目录下 while ((this.readedBytes = this.zipIn.read(this.buf)) > 0) { fileOut.write(this.buf, 0, this.readedBytes); } fileOut.close(); } this.zipIn.closeEntry(); } } catch (Exception ioe) { ioe.printStackTrace(); } }