JSON and Map, List, String mutual conversion

1) Map and JSON conversion to each other

　　Map converted into JSON

1 Map<String, List> map = new HashMap<>();
2 map.put("xAxis",xAxis);
3 map.put("yAxis",yAxis);
4 String json = JSON.toJSONString(map);//map转String

　　JSON turn into a Map

String data = "阿萨德";
Map<String, List> map = JSONObject.parseObject(data, Map.class);

 

2) List and JSON conversion to each other

　　List turn into JSON

 

1 List <Phone> list = new ArrayList<Phone>();
2 String str = JSON.toJSON(list).toString();

 

　　JSON turn into List

1 String data;
2 List<MoveFormBean> list = JSONObject.parseArray(data, MoveFormBean.class);

 

3) JSON String and mutual conversion

　　String turn into JSONArray or JSONObject

String data；
//String转成JSONArray
JSONArray list = JSONArray.parseArray(data);
//String转成JSONObject
JSONObject list = JSONObject.parseObject(data);

　　JSONArray，JSONObject转成String

1 JSONArray list = new JSONArray();
2 JSONObject list = new JSONObject();
3 String str = list.toJSONString();

 

4) JSONArray and JSONObject

1 JSONArray result =new JSONArray();
2 JSONObject json = new JSONObject();
3 json.put("name",a);
4 json.put("value",b);
5 result.add(json);