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springboot 文件上传下载

2021-09-23 09:58:16  阅读:27  来源: 互联网

标签:文件 resolve springboot modelLocation 上传下载 filename file new response


@PostMapping("/push")
    public void push(@PathVariable MultipartFile file) throws IOException {
        if (Objects.isNull(file) || file.isEmpty()) {
            return;
        }
        String filename = StringUtils.cleanPath(Objects.requireNonNull(file.getOriginalFilename()));
        Path modelLocation = Paths.get(EXCEL_LOCATION);
        if (!Files.exists(modelLocation)) {
            Files.createDirectories(modelLocation);
        }
        Path resolve = modelLocation.resolve(filename);
        Files.copy(file.getInputStream(), resolve, StandardCopyOption.REPLACE_EXISTING);
        //file.transferTo(resolve);  //直接transferTo
    }
    
@PostMapping("/down")
    public void download(@RequestBody String uri, HttpServletResponse response) throws IOException {
        File file = new File(uri);
        if (!file.exists()) {
            throw new ServiceException("文件不存在");
        }
        String filename = FilenameUtils.getName(uri);
        try (FileInputStream fileInputStream = new FileInputStream(file);
             BufferedInputStream bufferedInputStream = new BufferedInputStream(fileInputStream);
             BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(response.getOutputStream())) {
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(filename, "UTF-8"));
            response.addHeader("Content-Length", "" + file.length());
            FileCopyUtils.copy(bufferedInputStream, bufferedOutputStream);
        } catch (Exception e) {
            log.warn(e.toString());
        } finally {
            log.info("结束");
        }
    }

标签:文件,resolve,springboot,modelLocation,上传下载,filename,file,new,response
来源: https://blog.csdn.net/wangh92/article/details/120428865

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