Ajax后台传json格式数据到html

前台：

$.ajax({
     url : 'queryRegion',dataType: 'JSON',async : false,success: function(data){
        var rg = $(document).find("#regionName");
        for(var i=0;i<data.length;i++){  rg.append("<option value='"+data[i]["REGION_NAME"]+"'>"+ data[i]["REGION_NAME"]+ "</option>");
        }
    }
   });

后台：
//获取区域

@RequestMapping(value = "/queryRegion",method = RequestMethod.GET)
    public void queryRegion(HttpServletRequest hrequest,HttpServletResponse response){
        List<Map<String,Object>> dataRegions = ggfwCooperationService.listQueryRegion();
        PrintWriter out;
        try {
            response.setCharacterEncoding("UTF-8");
            response.setHeader("Content-type","textml;charset=UTF-8");
            out = response.getWriter();
            String json = JSONUtil.writeListMapJSONMap(dataRegions);
            out.write(json);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }