springboot项目部署到Linux服务器 进行文件上传

项目在服务器上文件上传想放到jar包所在文件夹lib的同级文件夹dist的upload文件夹中，该如何实现

@RestController
@RequestMapping("/api/bbb")
public class TimeController {
        @PostMapping("/upload")
        public BaseResult upload(MultipartFile file){
            //获取文件名
            String fileName = file.getOriginalFilename();
            //获取文件后缀名
           /* String suffixName = fileName.substring(fileName.lastIndexOf("."));
            //重新生成文件名
            fileName = UUID.randomUUID()+suffixName;*/
            //指定本地文件夹存储
            String filePath = ".../dist/upload/";
            try {
                //将图片保存到static文件夹里
                file.transferTo(new File(filePath+fileName));
                String tarpath = "tar -xvf"+ fileName+"-.../dist/upload";
                Process process = Runtime.getRuntime().exec(tarpath);

                return new BaseResult("200","success","");
            } catch (Exception e) {
                e.printStackTrace();
                return new BaseResult("400","failed","");
            }
        }
    }

/**
     * 保存文件工具类
     * @param file 文件
     * @param storagePath 保存地址
     * @param fileName 文件名称
     * @return
     */
    public static  Boolean saveFile( MultipartFile file, String storagePath,  String fileName) throws Exception{
        //检查当前有没有传入的目录 如果有则不创建 ，反之创建目录
        Path path = Paths.get(storagePath);
        Boolean isCreate = null;
        if (!Files.exists(path)) {
            //创建目录
            Path directories = Files.createDirectories(path);
            isCreate = createFile(file, fileName, directories);
        } else {
            isCreate = createFile(file, fileName, path);
        }
        return isCreate;
    }

private static Boolean createFile(MultipartFile file, String fileName, Path directories) {
        try {
            //获取输入流
            InputStream in = file.getInputStream();
            FileOutputStream fileOut = new FileOutputStream(new File(directories + "\\" + fileName));
            byte[] buf = new byte[1024 * 8];
            while (true) {
                int read = 0;
                if (in != null) {
                    read = in.read(buf);
                }
                if (read == -1) {
                    break;
                }
                fileOut.write(buf, 0, read);
            }
            fileOut.flush();
            fileOut.close();
            in.close();
        } catch (IOException e) {
            return false;
        }
        return true;
    }