检索java中json对象的所有嵌套键

如何获取JSON对象的所有嵌套键

下面是JSON输入，它应该返回所有带点分隔的键和子键，如下面的输出

输入：

{
  "name": "John",
  "localizedName": [
    {
      "value": "en-US",
    }
  ],
  "entityRelationship": [
    {
      "entity": "productOffering",
      "description": [
        {
          "locale": "en-US",
          "value": "New Policy Description"
        },
        {
          "locale": "en-US",
          "value": "New Policy Description"
        }

      ]
    }
  ]
}

输出：

["name","localizedName","localizedName.value","entityRelationship","entityRelationship.entity","entityRelationship.description","entityRelationship.description.locale","entityRelationship.description.value"] 

[entityRelationship.entity, localizedName, localizedName.value, entityRelationship, name, entityRelationship.description.value, entityRelationship.description, entityRelationship.description.locale]

你可以做：

public void findAllKeys(Object object, String key, Set<String> finalKeys) {
    if (object instanceof JSONObject) {
        JSONObject jsonObject = (JSONObject) object;

        jsonObject.keySet().forEach(childKey -> {
            findAllKeys(jsonObject.get(childKey), key != null ? key + "." + childKey : childKey, finalKeys);
        });
    } else if (object instanceof JSONArray) {
        JSONArray jsonArray = (JSONArray) object;
        finalKeys.add(key);

        IntStream.range(0, jsonArray.length())
                .mapToObj(jsonArray::get)
                .forEach(jsonObject -> findAllKeys(jsonObject, key, finalKeys));
    }
    else{
        finalKeys.add(key);
    }
}

---

@一开始我也这么认为，但请注意，例如，“entityRelationship.description.locale”将在我使用List时出现两次，这与要求相反。@SomeDude根据定义JSON对象中没有顺序。

[entityRelationship.entity, localizedName, localizedName.value, entityRelationship, name, entityRelationship.description.value, entityRelationship.description, entityRelationship.description.locale]