if("y".equals(imscmdGroup.getIsvpn())) 
     {
      sql = Sqls.queryEntity("select distinct(rtrim(param)) as param from imsswitch.dbo.paramess where param in ("+cmdmess+")and param not in (select rtrim(vpnreplace) from vpnreplace) order by param");//参数化
     }
     else
     {
         sql = Sqls.queryEntity("select distinct(rtrim(param)) as param from imsswitch.dbo.paramess where param in ("+cmdmess+") order by param");//参数化
     }
      sql.setEntity(dao.getEntity(paramess.class));
      dao.execute(sql);执行到这里就报错