android 读取json数据（遍历JSONObject和JSONArray

来源：互联网发布：无线网卡插上去没网络编辑：程序博客网时间：2024/05/01 21:29

json数据格式解析我自己分为两种；

一种是普通的，一种是带有数组形式的；

普通形式的：
服务器端返回的json数据格式如下：

{"userbean":{"Uid":"100196","Showname":"\u75af\u72c2\u7684\u7334\u5b50","Avtar":null,"State":1}}

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
                     * */
                    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");
带数组形式的：
服务器端返回的数据格式为：

{"calendar":
    {"calendarlist":
            [
            {"calendar_id":"1705","title":"(\u4eb2\u5b50)ddssd","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288927800","endshowtime":"1288931400","allDay":false},
            {"calendar_id":"1706","title":"(\u65c5\u884c)","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288933200","endshowtime":"1288936800","allDay":false}
            ]
    }
}

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
                     * */
                    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);
                    }

总结，普通形式的只需用JSONObject ，带数组形式的需要使用JSONArray 将其变成一个list。

android 读取json数据（遍历JSONObject和JSONArray）

public String getJson(){  
        String jsonString = "{\"FLAG\":\"flag\",\"MESSAGE\":\"SUCCESS\",\"name\":[{\"name\":\"jack\"},{\"name\":\"lucy\"}]}";//json字符串  
        try {  
            JSONObject result = new JSONObject(jsonstring);//转换为JSONObject  
            int num = result.length();  
            JSONArray nameList = result.getJSONArray("name");//获取JSONArray  
            int length = nameList.length();  
            String aa = "";  
            for(int i = 0; i < length; i++){//遍历JSONArray  
                Log.d("debugTest",Integer.toString(i));  
                JSONObject oj = nameList.getJSONObject(i);  
                aa = aa + oj.getString("name")+"|";  
                  
            }  
            Iterator<?> it = result.keys();  
            String aa2 = "";  
            String bb2 = null;  
            while(it.hasNext()){//遍历JSONObject  
                bb2 = (String) it.next().toString();  
                aa2 = aa2 + result.getString(bb2);  
                  
            }  
            return aa;  
        } catch (JSONException e) {  
            throw new RuntimeException(e);  
        }  
    }

0 0