上传文件到项目中

    /**
     * 上传文件
     * @param file
     * @return
     */
    @PostMapping("/upload")
    public Result handleFileUpload(@RequestParam("file") MultipartFile file) {
        String path = Utils.UploadFile(file);
        return Result.success(path);
    }

    /**
     * 上传文件
     * @param file
     * @return
     */
    public static String UploadFile(MultipartFile file){
        if (!file.isEmpty()) {
            try {
                byte[] bytes = file.getBytes();
                UUID uuid = UUID.randomUUID();
                String extension = FilenameUtils.getExtension(file.getOriginalFilename());
                Path path = Paths.get(UPLOAD_DIR + uuid+"."+extension);
                File uploadDir = new File(UPLOAD_DIR);
                if (!uploadDir.exists()) {
                    uploadDir.mkdirs();
                }
                Files.write(path, bytes);
                return "image/" + uuid+"."+extension;
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        throw new BussinessException("上传失败");
    }