1、上传图片并保存 本地文件夹

/// <summary>
        /// 上传 保存图片
        /// </summary>
        /// <returns></returns>
        [HttpPost]
        public IActionResult UpLoad()
        {
            //http 协议 Request Response
            //获取文件
            var hpf = Request.Form.Files[0];
            //新名称
            var newFileName = Guid.NewGuid().ToString();
            //获取扩展名
            var ext = Path.GetExtension(hpf.FileName);
            //将文件名和扩展名拼接
            var newName = newFileName + ext;
            //找到路径  将虚拟路径转成物理路径
            var path = Directory.GetCurrentDirectory() +"/Images";
            //合并路径和文件名
            var newPath = Path.Combine(path, newName);

            using (var stream = System.IO.File.Create(newPath))
            {
                 hpf.CopyTo(stream);

            }
            return Ok(new { url = newName });
        }