public String deleteGroupRule() {
   String[] ids = getParaArrayValue("checkbox");
   if (ids != null && ids.length > 0) {
     CompGroupRuleDao dao = new CompGroupRuleDao();
     try {
       dao.delete(ids);
     } catch (Exception e) {
       e.printStackTrace();
     } finally {
       dao.close();
     }
   }
   return groupRuleList();
 }