java文件上传demo以及相关的jar

@RequestMapping(value = "/resideAttachmentFileInsert", method = RequestMethod.POST) public void resideAttachmentFileInsert(HttpServletRequest request, HttpServletResponse response,ResideAttachment resideAttachment){ try { MultipartHttpServletRequest multipartRequest=(MultipartHttpServletRequest)request; //List<MultipartFile> multipartFiles = multipartRequest.getFiles("file"); //获取multiRequest 中所有的文件名 Iterator<String> iter=multipartRequest.getFileNames(); while(iter.hasNext()){ MultipartFile file=multipartRequest.getFile(iter.next()); resideAttachment.setFj(file.getInputStream()); //保存数据库 resideAttachmentMapper.insert(resideAttachment); //文件写入 file.transferTo("C:/123.png"); } resultJson(response, "查询成功!", true, true); } catch (Exception e) { resultJson(response, e.getMessage()); } }