[转]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：

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// TODO 状态处理 500 200 int res = ; 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 = ; 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=;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。