file-upload - 如何解决 postman 中的文件上传错误？

Question

我在项目中将文件上传与webapi一起使用。我正在与 postman 进行测试。但是， Request.Content.IsMimeMultipartContent()始终返回false。

postman 截图:





FileUploadController代码:

public async Task<HttpResponseMessage> UserImageUpload()
    {
        try
        {
            if (!Request.Content.IsMimeMultipartContent())
            {
                throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
            }

            var userImageUploadPath = HttpContext.Current.Server.MapPath(CommonParameters.UserProfileImageServerPath);
            var streamProvider = new CustomMultipartFormDataStreamProvider(userImageUploadPath);
            await Request.Content.ReadAsMultipartAsync(streamProvider);

            var files = new List<string>();
            foreach (MultipartFileData file in streamProvider.FileData)
            {
                files.Add(Path.GetFileName(file.LocalFileName));
            }

            return Request.CreateResponse(HttpStatusCode.OK, files);
        }
        catch (Exception exception)
        {
            logger.ErrorFormat("An error occured in UserImageUpload() Method - Class:FileUploadController - Message:{0}", exception);
            return Request.CreateResponse(HttpStatusCode.BadRequest);
        }
    }

Answer 1

这是 postman 的错误。尝试删除Content-Type header 。发送实际的帖子时，浏览器将自动添加适当的标题并创建边界。