android 解析json数据（一）

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")); 

                        csalendarInfos.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。

还可以利用反射机制来简化工作http://blog.csdn.net/yifuteli_kevin/article/details/11891783