参考1:File upload in ASP.NET Core web API https://www.janaks.com.np/file-upload-asp-net-core-web-api/ 后台在POST方法中如下(经实验可工作) [HttpPost] public IActionResult PostPicture(IFormFile file) { var stream = file.OpenReadStream();//获取流 var filename=file.File.Fil…