文件名称：HTML控件上传文件JSON
文件大小：2KB
文件格式：TXT
更新时间：2016-11-19 08:56:23
文件上传
string json = ""; string newfilename = ""; string path = ""; try { if (context.Request.Files["file_upload"] != null && context.Request.Files["file_upload"].FileName != "") { string hzm = System.IO.Path.GetExtension(context.Request.Files["file_upload"].FileName);//后缀名 如 .doc string[] a = { ".txt", ".jpg", ".jpeg", ".gif", ".png", ".docx", ".doc", ".xlsx", ".xls", ".rar", ".zip",".pdf" };//设定好了的格式 if (!a.Contains(hzm)) { json = "{\"statusCode\":\"300\",\"message\":\"文件格式不正确\",\"navTabId\":\"nav6\",\"rel\":\"\",\"callbackType\":\"\",\"forwardUrl\":\"\"}"; return json; } else { int defaulsize = Convert.ToInt32(System.Configuration.ConfigurationManager.AppSettings["filesize"]);//取得设置的默认文件的大小 int filesize = (context.Request.Files["file_upload"].ContentLength) / 1024; //取得上传的文件的大小，单位为bytes if (filesize < defaulsize) { #region 对文件进行操作 newfilename = DateTime.Now.ToString("yyyyMMddHHmmssfff") + hzm;//文件的新名字 如20120711105734222.doc path = System.Web.HttpContext.Current.Server.MapPath("~/UploadFile//");//文件保存的路径 if (!Directory.Exists(path)) { Directory.CreateDirectory(path); } #endregion } else { //超过了文件的大小 json = "{\"statusCode\":\"300\",\"message\":\"上传的文件超过了3000M,请重新选择\",\"navTabId\":\"nav6\",\"rel\":\"\",\"callbackType\":\"\",\"forwardUrl\":\"\"}"; return json; } } } } catch (Exception) { json = "{\"statusCode\":\"300\",\"message\":\"文件格式不正确\",\"navTabId\":\"nav6\",\"rel\":\"\",\"callbackType\":\"\",\"forwardUrl\":\"\"}"; return json; } if (newfilename != "") { context.Request.Files["file_upload"].SaveAs(path + newfilename); //保存文件 }