springboot上传文件到Nginx代理的FTP文件服务器

    //图片类型校验
    @Value("${picture.pictureType}")
    private String pictureType;// pictureType: ^.+.(jpg|png|gif|webp)$
    //图片大小校验
    @Value("${file.limitSize}")
    private String pictureSize; 

    @PostMapping("/insertTreeImage")
    public AjaxResult insertTreeImage(@RequestBody MultipartFile file, @RequestParam("id") Long id) throws IOException {
        //限制图片大小
        String regex=pictureSize.replaceAll("[A-Z]{2}","");
        Long limit=(Long.parseLong(regex))*1024;
        Long size = file.getSize()/1024;
        //限制图片类型
        if(!file.getOriginalFilename().matches(pictureType)){
            throw new BizException(BizCodeEnum.FILE_UPLOAD_TYPE_FAIL);
        } else if (file.isEmpty() || file==null){//验证图片是否为空
            throw new BizException(BizCodeEnum.FILE_UPLOAD_NOTFOUND_FAIL);
        }else if(size>=limit){//限制图片大小
            throw new BizException(BizCodeEnum.FILE_UPLOAD_SIZE_FAIL);
        }else {
            AjaxResult ajaxResult = ancientTreeService.uploadTreeImage(file, id);

            return AjaxResult.success("操作成功",ajaxResult);
        }
    }

 AjaxResult uploadTreeImage(MultipartFile file, Long id) throws IOException;

  
    @Override
    public AjaxResult uploadTreeImage(@RequestBody MultipartFile file , Long id) throws IOException {
        //获得图片原来的名称
        String fileName=file.getOriginalFilename();
        //防止上传后重名问题创建一个md5随机名称的文件夹
        String uploadFileName= UUID.randomUUID().toString();
        //按时间存放
        String strNow = new SimpleDateFormat("yyyyMMdd").format(new Date()).toString();
        String newFileName = uploadFileName;
        //对文件夹名称进行拼接作为上传路径
        String filePath="/"+ LitchiDirectoryName.AncientTreeDirName +"/"+strNow+"/"+newFileName;
        //拼接地址作为上传路径
        String url=nginxUrl+filePath+"/"+fileName;
        //数据存入数据库
        String address =filePath+"/"+fileName;
        AncientTreeDO ancientTreeDO=new AncientTreeDO().setTreeImage(address).setId(id);
        ancientTreeMapper.updateAncientTreePath(ancientTreeDO);

        try {
            //拿到输入流后传入ftp
            InputStream input=null;
            input = file.getInputStream();
            
    public static boolean uploadFile(String host, int port, String username, String password, String basePath,String filePath, String filename, InputStream input) {
        boolean result = false;
        FTPClient ftp = new FTPClient();
        try {
            int reply;
            ftp.connect(host, port);// 连接FTP服务器
            // 如果采用默认端口，可以使用ftp.connect(host)的方式直接连接FTP服务器
            ftp.login(username, password);// 登录
            reply = ftp.getReplyCode();
            if (!FTPReply.isPositiveCompletion(reply)) {
                ftp.disconnect();
                return result;
            }

                //切换到上传目录
                if (!ftp.changeWorkingDirectory(basePath + filePath)) {                //如果目录不存在创建目录
                    String[] dirs = filePath.split("/");
                    String tempPath = basePath;
                    for (String dir : dirs) {
                        if (null == dir || "".equals(dir)) continue;
                        tempPath += "/" + dir;
                        if (!ftp.changeWorkingDirectory(tempPath)) {
                            if (!ftp.makeDirectory(tempPath)) {
                                return result;
                            } else {
                                ftp.changeWorkingDirectory(tempPath);
                            }
                        }
                    }
                }            //设置为被动模式
                ftp.setBufferSize(1024 * 1024 * 2);
                BufferedInputStream bufferedInputStream = new BufferedInputStream(input);
                ftp.enterLocalPassiveMode();            //设置上传文件的类型为二进制类型
                ftp.setFileType(FTP.BINARY_FILE_TYPE);            //上传文件
                if (!ftp.storeFile(filename, bufferedInputStream)) {
                    return result;
                }
                input.close();
                ftp.logout();
                result = true;

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (ftp.isConnected()) {
                try {
                    ftp.disconnect();
                } catch (IOException ioe) {
                }
            }
        }
        return result;
    }
}

以上就是FTP上传的所有内容了，如果对你有帮助请点个赞