读取resources下json文件并返回至接口

 @RequestMapping(value = "/countriesList",method = RequestMethod.GET)
    @ResponseBody
    public JSONArray countriesList() throws IOException {
        String path = "/countries_list.json";
        JSONArray json = null;
        InputStream config = getClass().getResourceAsStream(path);
        if (config == null) {
            new BaseException("读取文件失败");
        } else {
         json = JSON.parseObject(config, JSONArray.class);
        }
        return json;
    }