JSON的各种解析小结

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JSON的各种解析

JSON是对象类型解析

数据是 {“name”:”zhangsanfeng”,”age”:3,”sex”:”nv”}

protected User readJsonObject(String jsonData) {    // 内置解析方法JSONObject    User bean = null;    try {        JSONObject jsonObject = new JSONObject(jsonData);        String xname = jsonObject.getString("name");        int xage = jsonObject.getInt("age");        String xsex = jsonObject.getString("sex");        bean = new User(xname, xage, xsex);    } catch (Exception e) {        e.printStackTrace();    }    return bean;}

JSON是数组类型解析

数据是

 [{"name":"zhangsanfeng","age":3,"sex":"nv"},{"name":"zhaobenshan","age":2,"sex":"renyao"}]protected List<User> readJsonArray(String jsonData) {        // 内置解析方法JSONObject        List<User> users = new ArrayList<User>();        try {            JSONArray jsonArray = new JSONArray(jsonData);            for (int i = 0; i < jsonArray.length(); i++) {                JSONObject jsonObject = jsonArray.getJSONObject(i);                String xname = jsonObject.getString("name");                int xage = jsonObject.getInt("age");                String xsex = jsonObject.getString("sex");                User user = new User(xname, xage, xsex);                users.add(user);            }        } catch (Exception e) {            e.printStackTrace();        }        return users;    }

JSON是综合类型解析(对象中包含数组,数组中包含对象)

数据是

{    "error_code": 0,    "reason": "查询成功!",    "result": {        "future": [            {                "date": "20140804",                "temperature": "28℃~36℃",                "weather": "晴转多云",                "weather_id": {                    "fa": "00",                    "fb": "01"                },                "week": "星期一",                "wind": "南风3-4级"            },            {                "date": "20140805",                "temperature": "28℃~36℃",                "weather": "晴转多云",                "weather_id": {                    "fa": "00",                    "fb": "01"                },                "week": "星期二",                "wind": "东南风3-4级"            },            {                "date": "20140806",                "temperature": "27℃~35℃",                "weather": "晴转多云",                "weather_id": {                    "fa": "00",                    "fb": "01"                },                "week": "星期三",                "wind": "东南风3-4级"            },            {                "date": "20140807",                "temperature": "27℃~34℃",                "weather": "多云",                "weather_id": {                    "fa": "01",                    "fb": "01"                },                "week": "星期四",                "wind": "东南风3-4级"            },    "resultcode": "200"}protected List<Future> readJsonObjArr(String jsonData) {        // 内置解析方法JSONObject        List<Future> futures = new ArrayList<Future>();        try {            JSONObject jsonObject = new JSONObject(jsonData);            JSONObject result = jsonObject.getJSONObject("result");            JSONArray jsonArray = result.getJSONArray("future");            for (int i = 0; i < jsonArray.length(); i++) {                JSONObject future = jsonArray.getJSONObject(i);                String xdate = future.getString("date");                String xtemperature = future.getString("temperature");                String xweather = future.getString("weather");                String xweek = future.getString("week");                String xwind = future.getString("wind");                Future f = new Future(xdate, xtemperature, xweather, xweek, xwind);                futures.add(f);            }        } catch (Exception e) {            e.printStackTrace();        }        return futures;    }

用框架对JSON解析

对象

protected User readJsonObject(String jsonData) {    // 内置解析方法JSONObject,ctrl+k    User bean = null;    bean = JsonUtil.parseJsonToBean(jsonData, User.class);    return bean;}

数组

users = (List<User>) JsonUtil.parseJsonToList(jsonData, new TypeToken<List<User>>(){}.getType());

综合

protected List<Future> readJsonObjArr(String jsonData) {    // 内置解析方法JSONObject    List<Future> futures = new ArrayList<Future>();    String result = JsonUtil.getFieldValue(jsonData, "result");    String future = JsonUtil.getFieldValue(result, "future");     JSONArray jsonArray;    try {        jsonArray = new JSONArray(future);        for (int i = 0; i < jsonArray.length(); i++) {            JSONObject jsonObject = jsonArray.getJSONObject(i);            String xdate = jsonObject.getString("date");            String xtemperature = jsonObject.getString("temperature");            String xweather = jsonObject.getString("weather");            String xweek = jsonObject.getString("week");            String xwind = jsonObject.getString("wind");            Future f = new Future(xdate, xtemperature, xweather, xweek, xwind);            futures.add(f);        }    } catch (Exception e) {        e.printStackTrace();    }    return futures;}

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