Android 文件压缩工具类

2019-11-07 23:38:32

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public class ZipUtils { PRivate static final int BUFF_SIZE = 1024; /** * @param zos 压缩流 * @param parentDirName 父目录 * @param file 待压缩文件 * @param buffer 缓冲区 * URL：http://www.bianceng.cn/OS/extra/201609/50420.htm * @return 只要目录中有一个文件压缩失败，就停止并返回 */ private static boolean zipFile(ZipOutputStream zos, String parentDirName, File file, byte[] buffer) { String zipFilePath = parentDirName + file.getName(); if (file.isDirectory()) { zipFilePath += File.separator; for (File f : file.listFiles()) { if (!zipFile(zos, zipFilePath, f, buffer)) { return false; } } return true; } else { try { BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file)); ZipEntry zipEntry = new ZipEntry(zipFilePath); zipEntry.setSize(file.length()); zos.putNextEntry(zipEntry); while (bis.read(buffer) != -1) { zos.write(buffer); } bis.close(); return true; } catch (FileNotFoundException ex) { ex.printStackTrace(); } catch (IOException ex) { ex.printStackTrace(); } return false; } } /** * @param srcPath 待压缩的文件或目录 * @param dstPath 压缩后的zip文件 * @return 只要待压缩的文件有一个压缩失败就停止压缩并返回(等价于windows上直接进行压缩) */ public static boolean zipFile(String srcPath, String dstPath) { File srcFile = new File(srcPath); if (!srcFile.exists()) { return false; } byte[] buffer = new byte[BUFF_SIZE]; try { ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(dstPath)); boolean result = zipFile(zos, "", srcFile, buffer); zos.close(); return result; } catch (FileNotFoundException ex) { ex.printStackTrace(); } catch (IOException ex) { ex.printStackTrace(); } return false; } /** * @param srcPath 待解压的zip文件 * @param dstPath zip解压后待存放的目录 * @return 只要解压过程中发生错误，就立即停止并返回(等价于windows上直接进行解压) */ public static boolean unzipFile(String srcPath, String dstPath) { if (TextUtils.isEmpty(srcPath) || TextUtils.isEmpty(dstPath)) { return false; } File srcFile = new File(srcPath); if (!srcFile.exists() || !srcFile.getName().toLowerCase(Locale.getDefault()).endsWith("zip")) { return false; } File dstFile = new File(dstPath); if (!dstFile.exists() || !dstFile.isDirectory()) { dstFile.mkdirs(); } try { ZipInputStream zis = new ZipInputStream(new FileInputStream(srcFile)); BufferedInputStream bis = new BufferedInputStream(zis); ZipEntry zipEntry = null; byte[] buffer = new byte[BUFF_SIZE]; if (!dstPath.endsWith(File.separator)) { dstPath += File.separator; } while ((zipEntry = zis.getNextEntry()) != null) { String fileName = dstPath + zipEntry.getName(); File file = new File(fileName); File parentDir = file.getParentFile(); if (!parentDir.exists()) { parentDir.mkdirs(); } FileOutputStream fos = new FileOutputStream(file); while (bis.read(buffer) != -1) { fos.write(buffer); } fos.close(); } bis.close(); zis.close(); return true; } catch (FileNotFoundException ex) { ex.printStackTrace(); } catch (IOException ex) { ex.printStackTrace(); } return false; }

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