[HttpPost]public void UploadFile(string filePath){UserInfo userInfo = Session["user"] as UserInfo;//保证路径格式一直以/结束filePath = filePath.TrimEnd('/') + "/";if (userInfo == null){RedirectToAction("Login", "UserInfo");}filePath = Server.UrlDecode(filePath == "/" ? "/NetDisk/" : filePath);var files = Request.Files;MyFile myFile = null;if (files.Count > 0){var file = files[0];string fileName = file.FileName;Stream inputStream = file.InputStream;string fileSaveFolder = Server.MapPath("~/NetDisk");//如果目标不存在，则创建if (!Directory.Exists(fileSaveFolder)){Directory.CreateDirectory(fileSaveFolder);}byte[] buffer = new byte[inputStream.Length];//判断是否已经超出个人网盘大小var myFiles = _myFileServiceRepository.FindAll(x => x.User.Id == userInfo.Id && x.IsDelete == false);int myDiskSize = 0;if (myFiles.Count() > 0){myDiskSize = myFiles.Sum(x => x.FileSize);}//如果已经超出网盘大小，则给出提示if (myDiskSize + buffer.Length > userInfo.NetDiskSize){AlertMsg("对不起，您的网盘空间不足，请清理后再次上传，或联系管理员进行扩容。", "");return;}inputStream.Read(buffer, 0, buffer.Length);string strFileMd5 = MD5Helper.GetMD5FromFile(buffer);string fileSavePath = Path.Combine(fileSaveFolder, filePath);//名称格式一律以md5命名。string strNewName = strFileMd5 + Path.GetExtension(file.FileName);fileSavePath = Path.Combine(fileSaveFolder, strNewName);//如果文件不存在，则保存物理文件。if (!System.IO.File.Exists(fileSavePath)){file.SaveAs(fileSavePath);}//判断在数据库中同一路径下，md5相同，名称相同的文件是否存在，不存在则直接插入，否则对文件进行自动重命名保存。var fileIsExist = _myFileServiceRepository.Find(x => x.FileMd5 == strFileMd5 && x.User.Id == userInfo.Id && x.FileName == fileName);//如果找到的文件对象不为空，并且是删除状态，则修改删除状态，不再新增文件信息，否则添加。//查询导航属性var currentUser = _userInfoServiceRepository.Find(x => x.Id == userInfo.Id);if (fileIsExist != null){myFile = fileIsExist;//文件被逻辑删除了，则更新状态，否则重命名后新增文件。if (fileIsExist.IsDelete){fileIsExist.IsDelete = false;_myFileServiceRepository.Update(fileIsExist);}else{//查找该用户下类似文件名的文件并且没有被逻辑删除的个数var count = _myFileServiceRepository.FindAll(x => x.User.Id == userInfo.Id && x.IsDelete == false && x.FileName.Contains(fileName)).Count();fileName = count > 0 ? Path.GetFileNameWithoutExtension(fileName) + "(" + (count + 1).ToString() + ")" + Path.GetExtension(fileName) : fileName;myFile = new MyFile(){FileMd5 = strFileMd5,ModifyDt = DateTime.Now,IsDelete = false,FileSize = buffer.Length,FolderPath = filePath,FileExt = Path.GetExtension(fileSavePath),CreateDt = DateTime.Now,FileName = fileName,FileIcon = GetFileIcon(Path.GetExtension(fileSavePath)),User = currentUser,IsFolder = 0};//保存数据库
                        _myFileServiceRepository.Add(myFile);}}else{//新增文件信息myFile = new MyFile(){FileMd5 = strFileMd5,ModifyDt = DateTime.Now,IsDelete = false,FileSize = buffer.Length,FolderPath = filePath,FileExt = Path.GetExtension(fileSavePath),CreateDt = DateTime.Now,FileName = fileName,FileIcon = GetFileIcon(Path.GetExtension(fileSavePath)),User = currentUser,IsFolder = 0};//保存数据库
                    _myFileServiceRepository.Add(myFile);}_myFileServiceRepository.SaveChanges();string json = new JavaScriptSerializer().Serialize(myFile);AlertMsg("上传成功", json);}}