android 解析json数据格式

json数据格式解析：

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：

[java] view plaincopyprint?

1. // TODO 状态处理 500 200  
2. int res = 0;  
3. res = httpClient.execute(httpPost).getStatusLine().getStatusCode();  
4. if (res == 200) {  
5.     /*
6.      * 当返回码为200时，做处理
7.      * 得到服务器端返回json数据，并做处理
8.      * */  
9.     HttpResponse httpResponse = httpClient.execute(httpPost);  
10.     StringBuilder builder = new StringBuilder();  
11.     BufferedReader bufferedReader2 = new BufferedReader(  
12.             new InputStreamReader(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 = new JSONObject(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"); 

                // 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：

[java] view plaincopyprint?

1. // TODO 状态处理 500 200  
2. int res = 0;  
3. res = httpClient.execute(httpPost).getStatusLine().getStatusCode();  
4. if (res == 200) {  
5.     /*
6.      * 当返回码为200时，做处理
7.      * 得到服务器端返回json数据，并做处理
8.      * */  
9.     HttpResponse httpResponse = httpClient.execute(httpPost);  
10.     StringBuilder builder = new StringBuilder();  
11.     BufferedReader bufferedReader2 = new BufferedReader(  
12.             new InputStreamReader(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.      * 这里需要分析服务器回传的json格式数据，
21.      */  
22.     JSONObject jsonObject = new JSONObject(builder.toString())  
23.             .getJSONObject("calendar");  
24.     JSONArray jsonArray = jsonObject.getJSONArray("calendarlist");  
25.     for(int i=0;i<jsonArray.length();i++){  
26.         JSONObject jsonObject2 = (JSONObject)jsonArray.opt(i);  
27.         CalendarInfo calendarInfo = new CalendarInfo();  
28.         calendarInfo.setCalendar_id(jsonObject2.getString("calendar_id"));  
29.         calendarInfo.setTitle(jsonObject2.getString("title"));  
30.         calendarInfo.setCategory_name(jsonObject2.getString("category_name"));  
31.         calendarInfo.setShowtime(jsonObject2.getString("showtime"));  
32.         calendarInfo.setEndtime(jsonObject2.getString("endshowtime"));  
33.         calendarInfo.setAllDay(jsonObject2.getBoolean("allDay"));  
34.         calendarInfos.add(calendarInfo);  
35.     } 

                // 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。