public ContentResult GetData(int page, int rows)
        {
            var funame  = Request.QueryString["funame"];
            var tblname = Request.QueryString["tablename"];
            var output  = SqliteReadTable.read(funame, tblname, page, rows);

            //用Content的方式把Json 字符串返回,否则双引号会被转义
            return(Content(output, "text/html"));
        }
 //查询RFC函数列表
 public ContentResult getFuncList(string funcname)
 {
     try
     {
         var output = SqliteReadTable.GetRFCList(targetSystem, funcname);
         if (string.IsNullOrEmpty(output))
         {
             if (funcname.Length >= 3)
             {
                 SAPFunction.GetRFCfunctionListAndSaveToDb(targetSystem, funcname);
                 output = SqliteReadTable.GetRFCList(targetSystem, funcname);
             }
         }
         // output = "{" + output + "}";
         return(Content(output, "text/html"));
     }
     catch (Exception ex)
     {
         var message = JsonConvert.SerializeObject(ex.Message);
         message = "{error:" + message + "}";
         return(Content(message, "text/html"));
     }
 }