android中解析后台返回的json字符串

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：

01 // TODO 状态处理 500 200
02 int res = ;
03 res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
04 if (res == 200) {
05     /**
06      * 当返回码为200时，做处理
07      * 得到服务器端返回json数据，并做处理
08      * */
09     HttpResponse httpResponse = httpClient.execute(httpPost);
10     StringBuilder builder =new StringBuilder();
11     BufferedReader bufferedReader2 =new BufferedReader(
12         newInputStreamReader(httpResponse.getEntity().getContent()));
13     String str2 ="";
14     for(String s = bufferedReader2.readLine(); s != null; s = bufferedReader2
15         .readLine()) {
16     builder.append(s);
17     }
18     Log.i("cat",">>>>>>" + builder.toString());
19
20 JSONObject jsonObject = newJSONObject(builder.toString())
21     .getJSONObject("userbean");
22
23 String Uid;
24 String Showname;
25 String Avtar;
26 String State;
27
28 Uid = jsonObject.getString("Uid");
29 Showname = jsonObject.getString("Showname");
30 Avtar = jsonObject.getString("Avtar");
31 State = jsonObject.getString("State");
32 带数组形式的：
33 服务器端返回的数据格式为：
34
35 {"calendar":
36 {"calendarlist":
37 [
38 {"calendar_id":"1705","title":"(\u4eb2\u5b50)ddssd","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288927800","endshowtime":"1288931400","allDay":false},
39 {"calendar_id":"1706","title":"(\u65c5\u884c)","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288933200","endshowtime":"1288936800","allDay":false}
40 ]
41 }
42 }
43
44 分析代码如下：
45
46 // TODO 状态处理 500 200
47 int res = ;
48 res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
49 if (res == 200) {
50     /**
51      * 当返回码为200时，做处理
52      * 得到服务器端返回json数据，并做处理
53      * */
54     HttpResponse httpResponse = httpClient.execute(httpPost);
55     StringBuilder builder =new StringBuilder();
56     BufferedReader bufferedReader2 =new BufferedReader(
57         newInputStreamReader(httpResponse.getEntity().getContent()));
58     String str2 ="";
59     for(String s = bufferedReader2.readLine(); s != null; s = bufferedReader2
60         .readLine()) {
61     builder.append(s);
62     }
63     Log.i("cat",">>>>>>" + builder.toString());
64     /**
65      * 这里需要分析服务器回传的json格式数据，
66      */
67     JSONObject jsonObject =new JSONObject(builder.toString())
68         .getJSONObject("calendar");
69     JSONArray jsonArray = jsonObject.getJSONArray("calendarlist");
70     for(inti=;i<jsonArray.length();i++){
71     JSONObject jsonObject2 = (JSONObject)jsonArray.opt(i);
72     CalendarInfo calendarInfo =new CalendarInfo();
73     calendarInfo.setCalendar_id(jsonObject2.getString("calendar_id"));
74     calendarInfo.setTitle(jsonObject2.getString("title"));
75     calendarInfo.setCategory_name(jsonObject2.getString("category_name"));
76     calendarInfo.setShowtime(jsonObject2.getString("showtime"));
77     calendarInfo.setEndtime(jsonObject2.getString("endshowtime"));
78     calendarInfo.setAllDay(jsonObject2.getBoolean("allDay"));
79     calendarInfos.add(calendarInfo);
80     }

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。