实战之oss附件批量下载，借鉴网上一些案例，但是没有达到预期效果，结合项目需求。实现远程将oss上的文件进行压缩，并提供给前端用户下载，经过测试完美实现该功能。
@PostMapping("downLoadZip")public void downLoadZip(@RequestBody CourseDetailVo detailVo,HttpServletResponse response,@RequestParam(value = "customFileName", required = false, defaultValue = "default.zip") String customFileName) throws IOException {List<AttachZipDto> objectNames = detailVo.getZipDtoList();ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();try (ZipOutputStream zipOut = new ZipOutputStream(byteArrayOutputStream)) {for (AttachZipDto objectName : objectNames) {String fileUrl = objectName.getFileOssUr();String extension = TouUtil.getFileExtension(objectName.getFileOssUr());if (fileUrl.startsWith("/")) {fileUrl = fileUrl.substring(1);}try (InputStream inputStream = ossUtil.getFileInputStream(fileUrl)) {zipOut.putNextEntry(new ZipEntry(objectName.getFileName()+"."+extension));IOUtils.copy(inputStream, zipOut);zipOut.closeEntry();} catch (OSSException | IOException e) {// 处理从 OSS 获取文件时发生的异常throw new RuntimeException("Failed to retrieve file from OSS", e);}}// 设置HTTP响应头response.setContentType("application/zip");response.setHeader("Content-Disposition", "attachment; filename=\"" + URLEncoder.encode(customFileName, StandardCharsets.UTF_8.toString()) + "\"");// 将压缩文件写入HTTP响应try (OutputStream outputStream = response.getOutputStream()) {byteArrayOutputStream.writeTo(outputStream);}} catch (IOException e) {// 处理 ZIP 创建或写入响应时的异常throw e;}
欢迎点赞、转发、收藏。
