@Override
 public List<SysParamItemVo> queryValid(String type) {
   if (StringUtils.isEmpty(type)) {
     throw new IllegalArgumentException("根据参数类型查询有效的选项时,没有获得类型编号!");
   }
   SysParamItemBo bo = new SysParamItemBo();
   bo.setType(type);
   bo.setStatus(CommonStatus.ACTIVE.getValue());
   List<SysParamItem> items = dao.query(bo);
   return VoHelper.wrapVos(
       items,
       new VoWrapper<SysParamItem, SysParamItemVo>() {
         @Override
         public SysParamItemVo wrap(SysParamItem sysParamItem) {
           SysParamItemVo vo = new SysParamItemVo();
           vo.setId(sysParamItem.getId());
           vo.setName(sysParamItem.getName());
           vo.setType(sysParamItem.getType());
           vo.setValue(sysParamItem.getValue());
           vo.setCascadeTypeCode(sysParamItem.getCascadeTypeCode());
           vo.setCascadeItemValue(sysParamItem.getCascadeItemValue());
           return vo;
         }
       });
 }
 @Override
 public PageVo query(SysParamItemBo bo) {
   PageVo vo = new PageVo();
   Long total = dao.getTotal(bo);
   vo.setTotal(total);
   if (total == 0) return vo;
   List<SysParamItem> sysParamItems = dao.query(bo);
   vo.setData(VoHelper.wrapVos(sysParamItems, this));
   return vo;
 }