JAva ObjectMapper jsonとオブジェクトの相互変換

1 json string回転JSOnObject
 

try {
     JSONObject jsonObject = new JSONObject("{\"phonetype\":\"N95\",\"cat\":\"WP\"}");
}catch (JSONException err){
     Log.d("Error", err.toString());
}

 
2 json string回転JsonNode

ObjectMapper mapper = new ObjectMapper();
JsonNode node = mapper.readTree(jsonString);

3 json string装map

Map map = mapper.readValue(jsonstring, Map.class);