int pageIndex = Request["page"] == null ? 1 : int.Parse(Request["page"]); 
            int pageSize = Request["rows"] == null ? 13 : int.Parse(Request["rows"]); 
            int totals;
            var roleList = _roleService.GetPagerEntites(pageSize, pageIndex, out totals, r => true, r => r.RoleName, true);
            var data = new { total = totals, rows = from role in roleList select new { role.RoleId, role.RoleName, role.RoleType, role.DelFlag, role.SubTime } };//构造jquery easyui的数据格式 total rows
            return Json(data, JsonRequestBehavior.AllowGet);