java实现萤石云截图保存上传到ftp功能

service层

  /*视屏监控*/
    public List findVideo(String COMPANY_CODE) {
        return functionDao.findVideo(COMPANY_CODE);
    }
    

  /**
     * 获取萤石云截图
     *
     * @param companyCode
     * @return
     */
    public int findPic(String companyCode) {
        int re=0;
        /*获取token*/
        List videos = this.findVideo(companyCode);

        List res = new ArrayList<>();
        for (VideoBean b : videos) {
            /*获取视频通道*/
            String tdUrl = "https://open.ys7.com//api/lapp/device/camera/list";

            MultiValueMap paramMap = new LinkedMultiValueMap<>();
            //从获取到的token中的获取token和序列号
            paramMap.add("accessToken", b.getAccessToken());
            paramMap.add("deviceSerial", b.getSerialNum());
            
            HttpHeaders headers = new HttpHea