.NETCore MVC 上传图片

1，前台JavaScript

 function uploadImg() {
            var formDate = new FormData();
            var files = $("#image").get(0).files;
            //拼接请求参数
            formDate.append("image", files[0]);
            //如果有其他参需要一起提交到后台
            //formDate.append("location", location);
            $.ajax({
                type: "POST",
                url: "UploadImage",
                contentType: false,
                cache: false,
                processData: false,
                data: formDate,
                error: function (request) {

                },
                success: function (data) {
                    $('#content').val(data);
                }
            });
        }

2，后台C#代码

        /// <summary>
        /// 图片上传
        /// </summary>
        /// <returns></returns>
        public string UploadImage()
        {
            var files = Request.Form.Files;
            if (files.Count == 0)
            {
                return "File does not exist!";
            }
            var file = files[0];
            string fileName = file.FileName;
            if (string.IsNullOrEmpty(fileName))//服务器是否存在该文件
            {
                return "File does not exist!";
            }
            // 获取上传的图片名称和扩展名称
            string fileFullName = Path.GetFileName(file.FileName);
            string fileExtName = Path.GetExtension(fileFullName);
            var fileExtNames = _Configuration["FileExtName"].Split(',');
            if (!fileExtNames.Contains(fileExtName))
            {
                return "File type error!";
            }
            //获取当前项目所在的物流路径
            string imgPath = _Configuration["ImgPath"];
            var newPath = fileFullName.Substring(0, fileFullName.IndexOf(fileExtName)) + System.DateTime.UtcNow.Ticks + fileExtName;
            var src = imgPath + newPath;

            // 如果目录不存在则要先创建
            if (!Directory.Exists(imgPath))
            {
                Directory.CreateDirectory(imgPath);
            }
            using (FileStream fs = System.IO.File.Create(src))
            {
                file.CopyTo(fs);
                fs.Flush();
            }
            return newPath;
        }

3，appsettings.json

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "AllowedHosts": "*",
  "ImgPath": "D:\Work\Global Quality\Morningstar.EquityFundamentals\Morningstar.EquityFundamentals.WebApi\wwwroot\images\",
  "FileExtName": ".jpg,.png,.bmp"
}

效果：