Android解析json对象和json数组


json数据格式解析可以分为两种:

一种是普通的对象(比如:modelinfo)

一种是带有数组形式的List<modelinfo>列表形式的

下面我们分别来看下对象形式的和数组形式的Json是如何进行解析的

Json解析说明:

普通的对象形式的只需用JSONObject ,带数组形式的需要使用JSONArray 将其变成一个List


1,普通对象格式的Json对象解析

定义测试json数据

{"userbean":{"Uid":"19908","Showname":"好用的Android解析Json数据","Avtar":"Json解析对象","State":0}}
分析代码如下:


              // TODO 状态处理 500 200 
                int res = 0; 
                res = httpClient.execute(httpPost).getStatusLine().getStatusCode(); 
                if (res == 200) { 
                    /* 
                     * 当返回码为200时,做处理 
                     * 得到服务器端返回json数据,并做处理 www.jsons.cn 
                     * */ 
                    HttpResponse httpResponse = httpClient.execute(httpPost); 
                    StringBuilder builder = new StringBuilder(); 
                    BufferedReader bufferedReader2 = new BufferedReader( 
                            new InputStreamReader(httpResponse.getEntity().getContent())); 
                    String str2 = ""; 
                    for (String s = bufferedReader2.readLine(); s != null; s = bufferedReader2 
                            .readLine()) { 
                        builder.append(s); 
                    } 
                    Log.i("cat", ">>>>>>" + builder.toString());

JSONObject jsonObject = new JSONObject(builder.toString()) 
                        .getJSONObject("userbean"); 

                String Uid; 
                String Showname; 
                String Avtar; 
                String State; 

                Uid = jsonObject.getString("Uid"); 
                Showname = jsonObject.getString("Showname"); 
                Avtar = jsonObject.getString("Avtar"); 
                State = jsonObject.getString("State");



2,带数组列表形式的Json数组解析

定义测试使用的json数据

{
    "calendar": {
        "calendarlist": [
            {
                "calendar_id": "1996",
                "title": "Android解析Json",
                "category_name": "安卓",
                "showtime": "2016.3.31",
                "endshowtime": "2016.3.31",
                "allDay": true
            },
            {
                "calendar_id": "1998",
                "title": "解析",
                "category_name": "Android",
                "showtime": "2016.3.31",
                "endshowtime": "2016.3.31",
                "allDay": true
            }
        ]
    }
}


分析代码如下:


              // TODO 状态处理 500 200 
                int res = 0; 
                res = httpClient.execute(httpPost).getStatusLine().getStatusCode(); 
                if (res == 200) { 
                //当返回码为200时,做处理得到服务器端返回json数据,并做处理 www.jsons.cn

                   HttpResponse httpResponse = httpClient.execute(httpPost); 
                    StringBuilder builder = new StringBuilder(); 
                    BufferedReader bufferedReader2 = new BufferedReader( 
                            new InputStreamReader(httpResponse.getEntity().getContent())); 
                    String str2 = ""; 
                    for (String s = bufferedReader2.readLine(); s != null; s = bufferedReader2 
                            .readLine()) { 
                        builder.append(s); 
                    } 
                    Log.i("cat", ">>>>>>" + builder.toString()); 

                   //这里需要分析服务器回传的json格式数据
                     JSONObject jsonObject = new JSONObject(builder.toString()).getJSONObject("calendar"); 
                    JSONArray jsonArray = jsonObject.getJSONArray("calendarlist"); 
                    for(int i=0;i<jsonArray.length();i++){ 
                        JSONObject jsonObject2 = (JSONObject)jsonArray.opt(i); 
                        CalendarInfo calendarInfo = new CalendarInfo(); 
                        calendarInfo.setCalendar_id(jsonObject2.getString("calendar_id")); 
                        calendarInfo.setTitle(jsonObject2.getString("title")); 
                        calendarInfo.setCategory_name(jsonObject2.getString("category_name")); 
                        calendarInfo.setShowtime(jsonObject2.getString("showtime")); 
                        calendarInfo.setEndtime(jsonObject2.getString("endshowtime")); 
                        calendarInfo.setAllDay(jsonObject2.getBoolean("allDay")); 
                        calendarInfos.add(calendarInfo); 
                    }