// 检查文件是否存在 public JsonResult CheckExists(List <FileHashInfo> hashlist) { FileSystemClient client = new FileSystemClient(AppConfig.FileSystem_AppID, AppConfig.FileSystem_AppSecret); string[] hashcodes = new string[hashlist.Count]; int[] sizes = new int[hashlist.Count]; for (int i = 0; i < hashlist.Count; i++) { var item = hashlist[i]; hashcodes[i] = item.HashCode; sizes[i] = item.Size; } return(Json(client.CheckFile(hashcodes, sizes))); }