利用网络通信获得并解析JSON

<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
{"statuses": [
{"calendar_id":"1705","title":"(\u4eb2\u5b50)ddssd","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288927800","endshowtime":"1288931400","allDay":false,"user":{"id":1222}},
{"calendar_id":"1706","title":"(\u65c5\u884c)","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288933200","endshowtime":"1288936800","allDay":false,"user":{"id":1222}}
] }

//实例化数据请求对象
httpGet = new HttpGet(
"http://222.27.166.10:8080/MyServer/jsonindex.jsp");
httpClient = new DefaultHttpClient();//实例化客户端对象
httpResponse = httpClient.execute(httpGet);//实例化响应对象
httpEntity = httpResponse.getEntity();//获得响应中的数据并存储
in = httpEntity.getContent();//获得数据内容
BufferedReader br = new BufferedReader(new InputStreamReader(in));//读取流
String line = null;
StringBuffer sb = new StringBuffer();
while ((line = br.readLine()) != null) {
sb.append(line);//此时的sb中的内容其实就是ＪＳＯＮ形式的字符串
}

//JSON字符串的解析，我在前面的博文中也有讲解
public List<HashMap<String, Object>> parseJSON(String str) {
List<HashMap<String, Object>> list = new ArrayList<HashMap<String, Object>>();
HashMap<String, Object> map ;
try {
JSONObject json = new JSONObject(str);//根据传入的的字符串获得ＪＳＯＮ对象昂
JSONArray js = (JSONArray) json.get("statuses");//通过键获得ＪＳＯＮ数组
for (int i = 0; i < js.length(); i++) {//循环数组读取数据
map = new HashMap<String, Object>();
JSONObject jo = (JSONObject) js.get(i);//每一个数组又是一个JSON对象
map.put("calendar_id", jo.getString("calendar_id"));//数据的存储
map.put("title", jo.getString("title"));
map.put("category_name", jo.getString("category_name"));
map.put("showtime", jo.getString("showtime"));
map.put("endshowtime", jo.getString("endshowtime"));
map.put("allDay", jo.getBoolean("allDay"));
JSONObject joo = jo.getJSONObject("user");//这里又嵌套了一个ＪＳＯＮ对象
map.put("id", joo.getString("id"));
list.add(map);//添加数据到List中
}
} catch (JSONException e) {
e.printStackTrace();
}
return list;//返回存储数据的list
}

//给数据源赋值并强制转换
list = (ArrayList<HashMap<String, Object>>) parseJSON(sb
.toString());
//实例化适配器，进行数据的存储
//这里的new String中的数据为ＪＳＯＮ中的键名称，ｎｅｗ　ｉｎｔ中的为自定义布局中控件的ＩＤ
//由于这里的ＪＳＯＮ数据已经得到，通过输出，可以看出每一个ＪＳＯＮ对象共７条数据，所以这里用７
//个控件去承载数据
adpater = new SimpleAdapter(this, list, R.layout.cell, new String[]{
"calendar_id","title","category_name","showtime","endshowtime","allDay","id"
}, new int[]{R.id.textView1,R.id.textView2,R.id.textView3,R.id.textView4,
R.id.textView5,R.id.textView6,R.id.textView7});
//适配Listview
lv.setAdapter(adpater);