Java讀取本地json文件及相應(yīng)處理方法

//讀取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;

  //讀取文件
  String input = FileUtils.readFileToString(filePath, "UTF-8");
  //將讀取的數(shù)據(jù)轉(zhuǎn)換為JSONObject
  JSONObject jsonObject = JSONObject.fromObject(input);
  if (jsonObject != null) {
   //取出按鈕權(quán)限的數(shù)據(jù)
   btnArray = jsonObject.getJSONArray("btnList");
  }
  Map<String, List<MenuVo>> btnMap = new HashMap<>();
  Iterator<Object> num = btnArray.iterator();
  //遍歷JSONArray，轉(zhuǎn)換格式。按按鈕集合按模塊（name）放入map中
  while (num.hasNext()) {
   JSONObject btn = (JSONObject) num.next();
   btnMap.put((String) btn.get("name"), JSONArray.toList((JSONArray) btn.get("children"), new MenuVo(), new JsonConfig()));
  }

{
 "btnList": [
 {
  "name": "用戶管理",
  "children": [
  {
   "id": "yhgladd",
   "name": "添加"
  },
  {
   "id": "yhgledit",
   "name": "編輯"
  },
  {
   "id": "yhgldelete",
   "name": "暫停"
  },
  {
   "id": "yhglstart",
   "name": "啟用"
  },
  {
   "id": "yhglsee",
   "name": "查看"
  }
  ]
 },
 {
  "name": "角色管理",
  "children": [
  {
   "id": "jsgladd",
   "name": "添加"
  },
  {
   "id": "jsgledit",
   "name": "編輯"
  },
  {
   "id": "jsglauth",
   "name": "授權(quán)"
  },
  {
   "id": "jsgldelete",
   "name": "刪除"
  }
  ]
 }
 ]
}