基于springmvc的文件上传下载的后台代码

文件上传：

	@RequestMapping("uploadFile")
	private void uploadFile(@RequestParam("file")MultipartFile uploadfile, HttpServletRequest request
			) throws IOException {
		String originalFilename = uploadfile.getOriginalFilename();
		String realPath = request.getSession().getServletContext().getRealPath("/fj");
		File file = new File(realPath);
		if(!file.exists()){
			file.mkdirs();
		}
		File file2 = new File(file,originalFilename);
		uploadfile.transferTo(file2);
	}	@RequestMapping("uploadFile")
	private