下载

//下载    @RequestMapping(value="/download")    public ResponseEntity
     
       download() throws IOException{        String fileName = "test.txt";        File downloadFile = new File("D:/test.txt");                HttpHeaders headers = new HttpHeaders();          headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);          headers.setContentDispositionFormData("attachment", fileName);                  return new ResponseEntity
      
       (FileUtils.readFileToByteArray(downloadFile),                                            headers, HttpStatus.CREATED);      }
      
     

上传

@RequestMapping(value = "/upload", method = RequestMethod.POST)    public String upload(@RequestParam("name") String name,            @RequestParam("file") MultipartFile file,RedirectAttributes attributes){        System.out.println("param:"+name);        if(!file.isEmpty()){            System.out.println("upload ok");        }                attributes.addAttribute("name", "upload success");        return "redirect:/login.jsp";    }

spring配置文件

 

文件下载参见  这位老兄的这篇blog，这位老兄测试说存在问题，本人测试未发现有存在。