spring mvc + freemarker ,对Map的处理

@RequestMapping("/queryAllDealOrder")
    public ModelAndView queryAllDealOrder(QueryVo vo, Query query, ModelMap model) {
        query = query != null ? query : new Query();
               
        PageFinder pageFinder = orderQueryService.queryAllOrder(vo, query);
        Map wareHouses = null;
        try {
            wareHouses = iComponent.getWareHouses();
        } catch (Exception e) {
            e.printStackTrace();
        }
        if(wareHouses != null && wareHouses.size() > 0){
            model.put("wareHouses", wareHouses);
        }
        
        model.addAttribute("pageFinder", pageFinder);
        model.addAttribute("flag", vo.getFlag());
        model.addAttribute("value", vo.getStatus());
        model.addAttribute("start", vo.getStart());
        model.addAttribute("end", vo.getEnd());
        model.addAttribute("orderNo", vo.getOrderNo());
        model.addAttribute("defray", vo.getPayMethod());
        model.addAttribute("vo", vo);
        return new ModelAndView("ylysystem/ordermgmt/xxxxx");
    }

ftl里面

    仓储：
   
        请选择   
         <#if wareHouses ??>
             <#list wareHouses?keys as whKey>
               selected="selected"> <#if wareHouses[whKey] ??> ${wareHouses[whKey]!"默认值"}