/** * @功能描述 压缩tar.gz 文件 * @param resourceList 源文件集合 * @param outPath 目标文件 * @return 返回压缩结果 * @throws Exception */ @PrintRunTime(function="压缩tar.gz文件") public static void packet(List<File> resourceList, String outPath) throws Exception { //1. 参数验证, 初始化输出路径 if(resourceList == null || resourceList.size() < 1 || !Verify.isEmpty(outPath)){ throw new ServiceException("文件压缩执行异常, 非法参数!"); } long startTime = System.currentTimeMillis(); // 2. 迭代源文件集合, 将文件打包为Tar try (FileOutputStream fileOutputStream = new FileOutputStream(outPath+".tmp"); BufferedOutputStream bufferedOutput = new BufferedOutputStream(fileOutputStream); TarOutputStream tarOutputStream = new TarOutputStream(bufferedOutput);) { for (File resourceFile : resourceList) { if(!resourceFile.isFile()){ continue; } try(FileInputStream fileInputStream = new FileInputStream(resourceFile); BufferedInputStream bufferedInput = new BufferedInputStream(fileInputStream);){ TarEntry entry = new TarEntry(new File(resourceFile.getName())); entry.setSize(resourceFile.length()); tarOutputStream.putNextEntry(entry); IOUtils.copy(bufferedInput, tarOutputStream); } catch (Exception e) { throw new ServiceException("文件["+resourceFile+"]压缩执行异常, 嵌套异常: \n" + e.toString()); }finally { tarOutputStream.closeEntry(); } } } catch (Exception e) { Files.delete(Paths.get(outPath+".tmp")); throw new ServiceException("文件压缩至["+outPath+"]执行异常, 嵌套异常: \n" + e.toString()); } //3. 读取打包好的Tar临时文件文件, 使用GZIP方式压缩 try (FileInputStream fileInputStream = new FileInputStream(outPath+".tmp"); BufferedInputStream bufferedInput = new BufferedInputStream(fileInputStream); FileOutputStream fileOutputStream = new FileOutputStream(outPath); GZIPOutputStream gzipOutputStream = new GZIPOutputStream(fileOutputStream); BufferedOutputStream bufferedOutput = new BufferedOutputStream(gzipOutputStream); ) { byte[] cache = new byte[1024]; for (int index = bufferedInput.read(cache); index != -1; index = bufferedInput.read(cache)) { bufferedOutput.write(cache,0,index); } long endTime = System.currentTimeMillis(); Log.info("文件["+outPath+"]压缩执行完毕, 耗时:" + (endTime - startTime) + "ms"); } catch (Exception e) { throw new ServiceException("文件压缩至["+outPath+"]执行异常, 嵌套异常: \n" + e.toString()); }finally { Files.delete(Paths.get(outPath+".tmp")); } }
/** * @功能描述 解压tar.gz文件 * @param targzFile tar.gz压缩文件 * @param outPath 存放解压后文件的目录 * @return 返回结果 * @throws ServiceException */ public static void unpack(File targzFile, String outPath) throws ServiceException { //1. 验证参数, 初始化输出路径 if(targzFile == null || !targzFile.isFile() || !Verify.isEmpty(outPath) || PathHandler.initPath(outPath) == null){ throw new ServiceException("文件解压缩执行异常, 非法参数!"); } long startTime = System.currentTimeMillis(); //2. 读取tar.gz文件转换为tar文件 try (FileInputStream fileInputStream = new FileInputStream(targzFile); BufferedInputStream bins = new BufferedInputStream(fileInputStream); GZIPInputStream gzipInputStream = new GZIPInputStream(bins); TarInputStream tarIn = new TarInputStream(gzipInputStream, 1024 * 2)) { //3. 迭代tar文件集合, 解压文件 for (TarEntry entry = tarIn.getNextEntry(); entry != null; entry = tarIn.getNextEntry()){ File targetFileName = new File(outPath + "/" + entry.getName()); IOUtils.copy(tarIn, new FileOutputStream(targetFileName)); } long endTime = System.currentTimeMillis(); Log.info("文件["+targzFile+"]解压执行完毕, 耗时:" + (endTime - startTime) + "ms"); } catch (Exception e) { throw new ServiceException("[" + targzFile + "] 解压执行异常, " + e.toString()); } }
原文:https://www.cnblogs.com/suoruijun/p/11209889.html