修改json数据中key(键值)

//方法一：修改JSONObject的键

public static JSONObject changeJsonObj(JSONObject jsonObj,Map<String, String> keyMap) {

   JSONObject resJson = new JSONObject();
   Set<String> keySet = jsonObj.keySet();
   for (String key : keySet) {
      String resKey = keyMap.get(key) == null ? key : keyMap.get(key);
      resJson.put(resKey,jsonObj.get(key));
      try {
         if (jsonObj.get(key) instanceof JSONObject) {
            JSONObject jsonobj1 = (JSONObject) jsonObj.get(key);
            resJson.put(resKey, changeJsonObj(jsonobj1, keyMap));
         } else if (jsonObj.get(key) instanceof JSONArray) {
            JSONArray jsonArr = (JSONArray) jsonObj.get(key);
            resJson.put(resKey, changeJsonArr(jsonArr, keyMap));
         } else if(jsonObj.get(key) instanceof ResponseHelper){　　
　　　　　　　//封装的实体类
　　　　　　　//将实体类转换为json格式，修改实体类的键
            Object obj = JSONArray.toJSON((ResponseHelper) jsonObj.get(key));
            resJson.put(resKey, changeJsonObj(JSONObject.parseObject(obj.toString()), keyMap));
         } else {
            resJson.put(resKey, jsonObj.get(key));
         }
      } catch (Exception e) {
         e.printStackTrace();
      }
   }
   return resJson;
}

//方法二：修改JSONArray的键

public static JSONArray changeJsonArr(JSONArray jsonArr,Map<String, String> keyMap) {
   JSONArray resJson = new JSONArray();
   for (int i = 0; i < jsonArr.size(); i++) {
      JSONObject jsonObj = jsonArr.getJSONObject(i);
      resJson.add(changeJsonObj(jsonObj, keyMap));
   }
   return resJson;
}

//测试方法:
//测试数据格式大致为: {"info":{"data":[{"lng":"333","lat":"3"}],"count":1}}
//备注：如果实体类中数据latitude为null，则转换时，控制台打印不出来转换后的数据

public static void main(String[] args) {
   String json = "{\"areaid\":\""+1+"\"}";

   Map<String,String> map = new HashMap<>();
   map.put("latitude","lat");
   map.put("longitude","lng");

   List list = new ArrayList();
   Map<String,String> maplist2 = new HashMap<>();
   maplist2.put("latitude","3");
   maplist2.put("longitude","333");
   list.add(maplist2);
   ResponseHelper helper = new ResponseHelper(list,list.size());
   JSONObject sgxcjson = new JSONObject();
   sgxcjson.put("info", helper);

   JSONObject jsonObject = SfApplicationTests.changeJsonObj(sgxcjson,map);
   System.out.println(jsonObject);
}