Java读取本地json文件及相应处理方法

//读取json文件地址
  /* String path = getClass().getClassLoader().getResource("menu.json").toString();
  path = path.replace("\\", "/");
  if (path.contains(":")) {
   path = path.replace("file:/", "");
  }*/
  ClassPathResource resource = new ClassPathResource("menu.json");
  File filePath = resource.getFile();
  JSONArray btnArray = null;

  //读取文件
  String input = FileUtils.readFileToString(filePath, "UTF-8");
  //将读取的数据转换为JSON 
  JSON  json  = JSON .from (input);
  if (json  != null) {
   //取出按钮权限的数据
   btnArray = json .getJSONArray("btnList");
  }
  Map<String, List<MenuVo>> btnMap = new HashMap<>();
  Iterator< > num = btnArray.iterator();
  //遍历JSONArray，转换格式。按按钮集合按模块（name）放入map中
  while (num.hasNext()) {
   JSON  btn = (JSON ) num.next();
   btnMap.put((String) btn.get("name"), JSONArray.toList((JSONArray) btn.get("children"), new MenuVo(), new JsonConfig()));
  }

{
 "btnList": [
 {
  "name": "用户管理",
  "children": [
  {
   "id": "yhgladd",
   "name": "添加"
  },
  {
   "id": "yhgledit",
   "name": "编辑"
  },
  {
   "id": "yhgldelete",
   "name": "暂停"
  },
  {
   "id": "yhglstart",
   "name": "启用"
  },
  {
   "id": "yhglsee",
   "name": "查看"
  }
  ]
 },
 {
  "name": "角色管理",
  "children": [
  {
   "id": "jsgladd",
   "name": "添加"
  },
  {
   "id": "jsgledit",
   "name": "编辑"
  },
  {
   "id": "jsglauth",
   "name": "授权"
  },
  {
   "id": "jsgldelete",
   "name": "删除"
  }
  ]
 }
 ]
}