public async Task <ActionResult> UploadVideo() { var data = Request.Form.Files["data"]; string lastModified = Request.Form["lastModified"].ToString(); var total = Request.Form["total"]; var fileName = Request.Form["fileName"]; var index = Request.Form["index"]; string temporary = Path.Combine(Directory.GetCurrentDirectory() + $@"\Files\Video\", lastModified);//临时保存分块的目录 try { if (!Directory.Exists(temporary)) { Directory.CreateDirectory(temporary); } string filePath = Path.Combine(temporary, index.ToString()); if (!Convert.IsDBNull(data)) { await Task.Run(() => { FileStream fs = new FileStream(filePath, FileMode.Create); data.CopyTo(fs); fs.Close(); }); } bool mergeOk = false; if (total == index) { mergeOk = await _uploadService.FileMerge(lastModified, fileName); } Dictionary <string, object> result = new Dictionary <string, object>(); result.Add("number", Convert.ToInt32(index.ToString())); result.Add("mergeOk", mergeOk); return(Ok(result)); } catch (Exception ex) { Directory.Delete(temporary);//删除文件夹 throw ex; } }