通過文件流轉加密壓縮文件并下載

前言

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代碼實現

文件流轉ZIP壓縮文件

???? 文件流轉ZIP壓縮文件代碼實現

public void downloadTest(ReqDTO dto, HttpServletResponse response) {try {// 配置Minio訪問下載文件MinioClient minioClient = new MinioClient("http://www.minio.com/", "user", "pwd123#");boolean bucketExist = minioClient.bucketExists("bucketOne");if (!bucketExist) {log.info("create bucket:{}", "bucketOne");minioClient.makeBucket("bucketOne");}final ObjectStat stat = minioClient.statObject("bucketOne", "userInfo.xlsx");log.info("ObjectStat: {}", stat);response.setHeader("Access-Control-Expose-Headers", "Content-Disposition");response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode("test.zip", "UTF-8"));// 獲取文件流InputStream inputStream = minioClient.getObject("bucketOne", "userInfo.xlsx");//設置讀取數據緩存大小byte[] buffer = new byte[4096];try {OutputStream os = response.getOutputStream();ZipOutputStream zos = new ZipOutputStream(os);ZipEntry entry = new ZipEntry("userInfo.xlsx");zos.putNextEntry(entry);//寫入壓縮文件int size = 0;//設置讀取數據緩存大小while ((size = inputStream.read(buffer)) > 0) {zos.write(buffer, 0, size);}//關閉輸入輸出流inputStream.close();zos.closeEntry();zos.close();} catch (ZipException e) {log.error("download zipOutputStream error:{}", e.getMessage(), e);e.printStackTrace();}} catch (Exception e) {log.error("download minio error:{}", e.getMessage(), e);throw new BusinessException(ErrorCodeEnum.DOWNLOAD_FAIL);}}

文件流轉加密壓縮文件

???? 文件流轉加密壓縮文件代碼實現

import net.lingala.zip4j.exception.ZipException; import net.lingala.zip4j.io.ZipOutputStream; import net.lingala.zip4j.model.ZipParameters; import net.lingala.zip4j.util.Zip4jConstants;private void zipEncryptionFile(ZipOutputStream zos,String fileMd5) {try {MinioClient minioClient = new MinioClient(endpoint, username, secretKey);boolean bucketExist = minioClient.bucketExists(BUCKET_NAME);if (!bucketExist) {log.info("bucket not exit:{}", BUCKET_NAME);}final ObjectStat stat = minioClient.statObject(BUCKET_NAME, fileMd5);log.info("ObjectStat: {}", stat);// 根據文件MD5獲取文件流InputStream inputStream = minioClient.getObject(BUCKET_NAME, fileMd5);// 設置讀取數據緩存大小byte[] buffer = new byte[4096];try {ZipParameters para = new ZipParameters();// 壓縮方式para.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);para.setFileNameInZip(fileMd5);para.setSourceExternalStream(true);// 壓縮級別para.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);para.setEncryptFiles(true);para.setEncryptionMethod(Zip4jConstants.ENC_METHOD_AES);// 壓縮加密para.setAesKeyStrength(Zip4jConstants.AES_STRENGTH_256);para.setPassword(ZIP_WORD);zos.putNextEntry(new File(FilenameUtils.getName(fileMd5)), para);// 寫入壓縮文件,設置讀取數據緩存大小int size = 0;while ((size = inputStream.read(buffer)) > 0) {zos.write(buffer, 0, size);}//關閉輸入輸出流zos.closeEntry();inputStream.close();zos.finish();} catch (ZipException e) {log.error("download zipOutputStream error:{}", e.getMessage(), e);}} catch (Exception e) {log.error("download minio error:{}", e.getMessage(), e);throw new BusinessException(ErrorCodeEnum.DOWNLOAD_FAIL);} finally {if (null != zos) {try {zos.close();} catch (IOException e) {log.error(e.getMessage(), e);}}} }

小結

總結

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