//文件保存目录路径        const string SavePath = "/UploadFile/";        #region uploadJson        //        // GET: /KindEditor/Upload        public ActionResult Upload()        {            //文件保存目录URL            var saveUrl = SavePath;            //定义允许上传的文件扩展名            var extTable = new Hashtable                               {                                   {"image", "gif,jpg,jpeg,png,bmp"},                                   {"flash", "swf,flv"},                                   {"media", "swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb"},                                   {"file", "doc,docx,xls,xlsx,ppt,htm,html,txt,zip,rar,gz,bz2"}                               };            //最大文件大小            const int maxSize = 2000000;            var imgFile = Request.Files["imgFile"];            if (imgFile == null)            {                return ShowError("请选择文件。");            }            var dirPath = Server.MapPath(SavePath);            if (!Directory.Exists(dirPath))            {                //return ShowError("上传目录不存在。" + dirPath);                Directory.CreateDirectory(dirPath);            }            var dirName = Request.QueryString["dir"];            if (String.IsNullOrEmpty(dirName))            {                dirName = "image";            }            if (!extTable.ContainsKey(dirName))            {                return ShowError("目录名不正确。");            }            var fileName = imgFile.FileName;            var extension = Path.GetExtension(fileName);            if (extension == null)            {                return ShowError("extension == null");            }            var fileExt = extension.ToLower();            if (imgFile.InputStream == null || imgFile.InputStream.Length > maxSize)            {                return ShowError("上传文件大小超过限制。");            }            if (String.IsNullOrEmpty(fileExt) ||                Array.IndexOf(((String)extTable[dirName]).Split(‘,‘), fileExt.Substring(1).ToLower()) == -1)            {                return ShowError("上传文件扩展名是不允许的扩展名。\n只允许" + ((String)extTable[dirName]) + "格式。");            }            //创建文件夹            dirPath += dirName + "/";            saveUrl += dirName + "/";            if (!Directory.Exists(dirPath))            {                Directory.CreateDirectory(dirPath);            }            var ymd = DateTime.Now.ToString("yyyyMMdd", System.Globalization.DateTimeFormatInfo.InvariantInfo);            dirPath += ymd + "/";            saveUrl += ymd + "/";            if (!Directory.Exists(dirPath))            {                Directory.CreateDirectory(dirPath);            }            var newFileName = DateTime.Now.ToString("yyyyMMddHHmmss_ffff", System.Globalization.DateTimeFormatInfo.InvariantInfo) + fileExt;            var filePath = dirPath + newFileName;            imgFile.SaveAs(filePath);            var fileUrl = saveUrl + newFileName;            var hash = new Hashtable();            hash["error"] = 0;            hash["url"] = fileUrl;            return Json(hash, "text/html;charset=UTF-8");        }        private JsonResult ShowError(string message)        {            var hash = new Hashtable();            hash["error"] = 1;            hash["message"] = message;            return Json(hash, "text/html;charset=UTF-8");        }        #endregion        #region fileManagerJson        //        // GET: /KindEditor/FileManager        public ActionResult FileManager()        {            //根目录URL，可以指定绝对路径，比如 http://www.yoursite.com/attached/            var rootUrl = SavePath;            //图片扩展名            const string fileTypes = "gif,jpg,jpeg,png,bmp";            String currentPath;            String currentUrl;            String currentDirPath ;            String moveupDirPath ;            var dirPath = Server.MapPath(SavePath);            var dirName = Request.QueryString["dir"];            if (!String.IsNullOrEmpty(dirName))            {                if (Array.IndexOf("image,flash,media,file".Split(‘,‘), dirName) == -1)                {                    return Content("Invalid Directory name.");                }                dirPath += dirName + "/";                rootUrl += dirName + "/";                if (!Directory.Exists(dirPath))                {                    Directory.CreateDirectory(dirPath);                }            }            //根据path参数，设置各路径和URL            var path = Request.QueryString["path"];            path = String.IsNullOrEmpty(path) ? "" : path;            if (path == "")            {                currentPath = dirPath;                currentUrl = rootUrl;                currentDirPath = "";                moveupDirPath = "";            }            else            {                currentPath = dirPath + path;                currentUrl = rootUrl + path;                currentDirPath = path;                moveupDirPath = Regex.Replace(currentDirPath, @"(.*?)[^\/]+\/$", "$1");            }            //排序形式，name or size or type            String order = Request.QueryString["order"];            order = String.IsNullOrEmpty(order) ? "" : order.ToLower();            //不允许使用..移动到上一级目录            if (Regex.IsMatch(path, @"\.\."))            {                return Content("Access is not allowed.");            }            //最后一个字符不是/            if (path != "" && !path.EndsWith("/"))            {                return Content("Parameter is not valid.");            }            //目录不存在或不是目录            if (!Directory.Exists(currentPath))            {                return Content("Directory does not exist.");            }            //遍历目录取得文件信息            string[] dirList = Directory.GetDirectories(currentPath);            string[] fileList = Directory.GetFiles(currentPath);            switch (order)            {                case "size":                    Array.Sort(dirList, new NameSorter());                    Array.Sort(fileList, new SizeSorter());                    break;                case "type":                    Array.Sort(dirList, new NameSorter());                    Array.Sort(fileList, new TypeSorter());                    break;                default:                    Array.Sort(dirList, new NameSorter());                    Array.Sort(fileList, new NameSorter());                    break;            }            var result = new Hashtable();            result["moveup_dir_path"] = moveupDirPath;            result["current_dir_path"] = currentDirPath;            result["current_url"] = currentUrl;            result["total_count"] = dirList.Length + fileList.Length;            var dirFileList = new List<Hashtable>();            result["file_list"] = dirFileList;            foreach (var t in dirList)            {                var dir = new DirectoryInfo(t);                var hash = new Hashtable();                hash["is_dir"] = true;                hash["has_file"] = (dir.GetFileSystemInfos().Length > 0);                hash["filesize"] = 0;                hash["is_photo"] = false;                hash["filetype"] = "";                hash["filename"] = dir.Name;                hash["datetime"] = dir.LastWriteTime.ToString("yyyy-MM-dd HH:mm:ss");                dirFileList.Add(hash);            }            foreach (var t in fileList)            {                var file = new FileInfo(t);                var hash = new Hashtable();                hash["is_dir"] = false;                hash["has_file"] = false;                hash["filesize"] = file.Length;                hash["is_photo"] = (Array.IndexOf(fileTypes.Split(‘,‘), file.Extension.Substring(1).ToLower()) >= 0);                hash["filetype"] = file.Extension.Substring(1);                hash["filename"] = file.Name;                hash["datetime"] = file.LastWriteTime.ToString("yyyy-MM-dd HH:mm:ss");                dirFileList.Add(hash);            }            return Json(result, "text/html;charset=UTF-8", JsonRequestBehavior.AllowGet);        }                private class NameSorter : IComparer        {            public int Compare(object x, object y)            {                if (x == null && y == null)                {                    return 0;                }                if (x == null)                {                    return -1;                }                if (y == null)                {                    return 1;                }                var xInfo = new FileInfo(x.ToString());                var yInfo = new FileInfo(y.ToString());                return String.CompareOrdinal(xInfo.FullName, yInfo.FullName);            }        }        private class SizeSorter : IComparer        {            public int Compare(object x, object y)            {                if (x == null && y == null)                {                    return 0;                }                if (x == null)                {                    return -1;                }                if (y == null)                {                    return 1;                }                var xInfo = new FileInfo(x.ToString());                var yInfo = new FileInfo(y.ToString());                return xInfo.Length.CompareTo(yInfo.Length);            }        }        private class TypeSorter : IComparer        {            public int Compare(object x, object y)            {                if (x == null && y == null)                {                    return 0;                }                if (x == null)                {                    return -1;                }                if (y == null)                {                    return 1;                }                var xInfo = new FileInfo(x.ToString());                var yInfo = new FileInfo(y.ToString());                return String.CompareOrdinal(xInfo.Extension, yInfo.Extension);            }        }                #endregion