spring mvc上传、下载的实现

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下载

//下载    @RequestMapping(value="/download")    public ResponseEntity<byte[]> 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<byte[]>(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

<!-- 文件上传解析器 -->    <bean id="multipartResolver"        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">        <!-- one of the properties available; the maximum file size in bytes -->        <property name="maxUploadSize" value="-1"/>    </bean>

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