Мобильная версияI have two JSON strings which are essentially arrays of JSONObject. The two JSON strings have below structure and keys:
JSON-1:
[ { "title": "ABC", "edition": 7, "year": 2011 }, { "title": "DEF", "edition": 2, "year": 2012 }, { "title": "XYZ", "edition": 3, "year": 2013 } ] And, JSON-2:
[ { "title": "ABC", "price": "20" }, { "title": "DEF", "price": "20" }, { "title": "XYZ", "price": "20" } ] Both these JSONs have a common key "title" based on which I want to merge these two JSONs, either merging JSON-2 values into JSON-1 or creating a JSON object with the merged result.
The merged result should look like below:
[ { "title": "ABC", "edition": 7, "year": 2011, "price": "20" }, { "title": "DEF", "edition": 2, "year": 2012 "price": "20" }, { "title": "XYZ", "edition": 3, "year": 2013 "price": "20" } ] How can I achieve this by minimum looping and minimum object creation? I also can not use entity/model classes. The idea is to do it without creating any model classes.
Note: I cannot use Gson because I don't have the approval to use the same.
- I tried to use List listObj = objectMapper.readValue(jsonOneString, new TypeReference(){});, but I am getting an unknown property exception.
- I tried JsonNode node = objectMapper.readTree(jsonOneString);, but I cannot proceed much further with this approach.
I know what I am doing here is highly inefficient, so looking for ways which will use no entity class, minimum new object creation and minimum loops. Kindly advise.
UPDATE: I updated the below code with a slight modification:
if (json1elem.get("title")!=null && json2elem.get("title")!=null && json1elem.get("title").equals(json2elem.get("title"))) { // }
Источник: https://stackoverflow.com/questions/736 ... common-key
