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

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