Json 解析的一个范例-白红宇

Json 解析的一个范例

阅读量：286 次

发布时间：2019-03-01

本文共 2624 字，大约阅读时间需要 8 分钟。

JSON????????????????????????????????????????Java??JSON???????????????????

1. ??JSON???????

?Java????JSON????????? JSONObject ? JSONArray?JSONObject ????????????????? JSONArray ???????????????????????????JSON???

2. ???????

?????????????????????????????????????

public static List
   
     parseProgrammersJson(String json) {    List
    
      programmersList = new ArrayList<>();    try {        JSONObject jsonObject = new JSONObject(json);        JSONArray programmersArray = jsonObject.getJSONArray("programmers");        for (int i = 0; i < programmersArray.length(); i++) {            String firstName = programmersArray.getJSONObject(i).getString("firstName");            String lastName = programmersArray.getJSONObject(i).getString("lastName");            String email = programmersArray.getJSONObject(i).getString("email");            programmersList.add(firstName + lastName + email);        }    } catch (JSONException e) {        e.printStackTrace();    }    return programmersList;}

3. ??????

??????????????????????????????????

public static List
   
     parseAuthorsJson(String json) {    List
    
      authorsList = new ArrayList<>();    try {        JSONObject jsonObject = new JSONObject(json);        JSONArray authorsArray = jsonObject.getJSONArray("authors");        for (int i = 0; i < authorsArray.length(); i++) {            String firstName = authorsArray.getJSONObject(i).getString("firstName");            String lastName = authorsArray.getJSONObject(i).getString("lastName");            String genre = authorsArray.getJSONObject(i).getString("genre");            authorsList.add(firstName + lastName + genre);        }    } catch (JSONException e) {        e.printStackTrace();    }    return authorsList;}

4. ???????

??????????????????????????????????????

public static List
   
     parseMusiciansJson(String json) {    List
    
      musiciansList = new ArrayList<>();    try {        JSONObject jsonObject = new JSONObject(json);        JSONArray musiciansArray = jsonObject.getJSONArray("musicians");        for (int i = 0; i < musiciansArray.length(); i++) {            String firstName = musiciansArray.getJSONObject(i).getString("firstName");            String lastName = musiciansArray.getJSONObject(i).getString("lastName");            String instrument = musiciansArray.getJSONObject(i).getString("instrument");            musiciansList.add(firstName + lastName + instrument);        }    } catch (JSONException e) {        e.printStackTrace();    }    return musiciansList;}