【Java】多文件压缩下载（调用浏览器下载）

代码如下：

//进入课程学习-下载课程文档   调用浏览器各自的下载方式@RequestMapping(value = "downloadDocFiles")public String downloadDocFiles(String courseId, HttpServletResponse response) throws IOException, URISyntaxException {List<ResourceCourseware> CoursewareList = resourceCoursewareService.findListByCourseId(courseId);ArrayList<ResourceFile> totalFileList = new ArrayList<>();//循环该课程下所有课件for (ResourceCourseware aCoursewareList : CoursewareList) {logger.debug("==Evan==CoursewareList" + aCoursewareList);ResourceFile resourceFile = new ResourceFile();resourceFile.setResourceId(aCoursewareList.getId());resourceFile.setType(ResourceConstants.documentMateria);List<ResourceFile> fileList = resourceFileService.findList(resourceFile);//循环所有课件下的所有文档for (ResourceFile aFileList : fileList) {logger.debug("==Evan==aFileList" + aFileList);totalFileList.add(aFileList);}}logger.debug("==Evan==totalFileNum: " + totalFileList.size() + "  totalFileList: " + totalFileList);response.setCharacterEncoding("utf-8");response.setContentType("APPLICATION/OCTET-STREAM");//设置content-disposition响应头控制浏览器以下载的形式打开文件，中文文件名要使用URLEncoder.encode方法进行编码，否则会出现文件名乱码//SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss");//response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode( "课程文档" + sdf.format(new Date()) + ".zip", "UTF-8"));response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode( resourceCourseService.get(courseId).getCourseName() + "_课程文档" + ".zip", "UTF-8"));//创建输出流OutputStream os = response.getOutputStream();byte[] buf = new byte[1024];try {//ZipOutputStream类：完成文件或文件夹的压缩ZipOutputStream out = new ZipOutputStream(os);for (ResourceFile aTotalFileList : totalFileList) {FileInputStream fis = new FileInputStream(aTotalFileList.getLocalUrl());out.putNextEntry(new ZipEntry(aTotalFileList.getName()));int len;while ((len = fis.read(buf)) > 0) {out.write(buf, 0, len);}out.closeEntry();fis.close();}out.flush();out.close();logger.debug("Evan========压缩完成!!!");} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return null;}