spring boot 图片上传

      /*
          白名单请求都直接放行:
         */
        List<String> urlList = new ArrayList<>(); 8         //对上传图片的url接口/product/img-upload的请求直接放行
        urlList.add("/product/img-upload");
        //对static下的/img/upload中的静态资源图片的访问直接放行
        if(urlList.contains(path)||path.contains("/img/upload")){
            chain.doFilter(request, response);
            return;
        }

    /**
     * 上传图片的url接口/product/img-upload
     *
     * 参数MultipartFile file对象封装了上传的图片;
     *
     * @CrossOrigin表示该url接口允许跨域请求;
     */
    @CrossOrigin
    @PostMapping("/img-upload")
    public Result uploadImage(MultipartFile file){

        try {
            //拿到图片上传到的目录(类路径classes下的static/img/upload)的File对象
            File uploadDirFile = ResourceUtils.getFile(uploadPath);
            //拿到图片上传到的目录的磁盘路径
            String uploadDirPath = uploadDirFile.getAbsolutePath();
            //拿到图片保存到的磁盘路径
            String fileUploadPath = uploadDirPath + "\\" + file.getOriginalFilename();
            //保存图片
            file.transferTo(new File(fileUploadPath));
            return Result.ok("图片上传成功！");
        } catch (Exception e) {
            return Result.err(Result.CODE_ERR_BUSINESS,"图片上传失败！");
        }
    }

#application.properties文件
# 图片上传位置
file.upload-path=classpath:static/img/upload
# 上传的图片保存数据库的访问路径
file.access-path=/img/upload/