php android json

//android

public class GoWinHttp {    //通过post获得数据    public static String postHttpData(String url,List nameValuePairs)    {        String resultStr=null;        HttpClient httpclient = new DefaultHttpClient();        HttpPost httppost = new HttpPost(url);         try {                httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));                HttpResponse response;                 response=httpclient.execute(httppost);                     resultStr=EntityUtils.toString(response.getEntity());            } catch (UnsupportedEncodingException e) {                Log.d(url, "UnsupportedEncodingException");                e.printStackTrace();            } catch (ClientProtocolException e) {                Log.d(url, "ClientProtocolException");                e.printStackTrace();            } catch (IOException e) {                Log.d(url, "IOException");                e.printStackTrace();            }            return resultStr;     }}

List nameValuePairs  构建  这是，post给php的参数nameValuePairs.add(new BasicNameValuePair("key","value"));

//解析方法，主要是,这里有一点特殊，就是开始第一个json对象是jsonObject 和JSONArray 有一点不同，jsonObject 是指json最开始以{开始的，而以[开始的是JSONArray ,没仔细研究，这里他们都是字符串

//解析JSON数据    public static List