如何上传附件

public List<FilePathModel> upLoadFiles(HttpServletRequest request) throws IllegalStateException, IOException { FileOutputStream os = null; InputStream in = null; String systemPath = ToolUtils.filePath(); List<FilePathModel> ls = new ArrayList<FilePathModel>(); StringBuffer rootPathBuff=new StringBuffer(); rootPathBuff.append(systemPath); rootPathBuff.append(Constant.WORK_ATTACHMENT).append(File.separator); rootPathBuff.append(DateUtil.getDateFormatString(Calendar.getInstance().getTime(), "yyyyMM")); File rootPath = new File(rootPathBuff.toString()); // 如果文件夹不存在则创建 if (!rootPath.exists()) { rootPath.mkdirs(); } CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver( request.getSession().getServletContext()); // 判断 request 是否有文件上传,即多部分请求 if (multipartResolver.isMultipart(request)) { // 转换成多部分request MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request; try { // 取得request中的所有文件 List<MultipartFile> iter = multiRequest.getFiles("files"); FilePathModel filePathModel=null; for(int i=0;i<iter.size();i++) { // 取得上传文件 MultipartFile file = iter.get(i); if (file != null) { // 取得当前上传文件的文件名称 String myFileName = file.getOriginalFilename(); // 如果名称不为“”,说明该文件存在，否则说明该文件不存在 if (!ToolUtils.isEmpty(myFileName.trim())) { filePathModel=new FilePathModel(); filePathModel.setFileName(myFileName); String filePath = new StringBuffer( Constant.WORK_ATTACHMENT) .append(File.separator) .append(DateUtil.getDateFormatString(Calendar.getInstance().getTime(), "yyyyMM")) .append(File.separator) .append(UUID.randomUUID()) .append(new Date().getTime()).append("_") .append(myFileName).toString(); // 定义上传路径 filePath = systemPath + filePath; os = new FileOutputStream(filePath); // 拿到上传文件的输入流 in = file.getInputStream(); // 创建一个缓冲区 byte buffer[] = new byte[1024]; // 判断输入流中的数据是否已经读完的标识 int len = 0; // 循环将输入流读入到缓冲区当中，(len=in.read(buffer))>0就表示in里面还有数据 while ((len = in.read(buffer)) > 0) { os.write(buffer, 0, len); } filePathModel.setFilePath(filePath); ls.add(filePathModel); if (os != null) { os.flush(); os.close(); } if (in != null) { in.close(); } } } } } catch (Exception e) { logger.warn("上传文件失败:{}", e.getMessage()); } finally { try { if (os != null) { os.flush(); os.close(); } if (in != null) { in.close(); } } catch (IOException e) { logger.error("IO关闭异常", e); } } } return ls; }

转载于:https://www.cnblogs.com/persistence360/p/7655834.html

相关资源：数据结构—成绩单生成器