springboot的文件上传下载

基于springboot的文件上传下载

文件上传

@PostMapping("/fileUpLoad")
    public Map fileUpLoad(@RequestParam("file") MultipartFile file) throws IOException {
        String fileName = file.getOriginalFilename();
        System.out.println("文件上传，入参为："+fileName);
        //将文件保存到具体位置
        String fileUrl="D:\\Documents\\Downloads\\"+fileName;
        file.transferTo(new File(fileUrl));

        Map map = new HashMap();
        map.put("code",200);
        map.put("msg","文件上传success");
        return map;
    }

文件下载

@GetMapping("/fileDownLoad")
    public ResponseEntity<byte[]> fileDownLoad() throws IOException {
        System.out.println("执行文件下载");
        FileInputStream fis = new FileInputStream("C:\\Users\\Administrator\\Desktop\\demo.zip");

        byte[] body = new byte[fis.available()];

        fis.read(body);

        HttpHeaders header = new HttpHeaders();

        header.add("Content-Disposition","attachment;filename=demo.zip");

        ResponseEntity<byte[]> responseEntity = new ResponseEntity<>(body,header, HttpStatus.OK);

        return responseEntity;
    }