android解析网络json数据（1）

public class NetConnection{
public NetConnection(final String url,final HttpMethod method,final SuccessCallback successCallback,
final FailCallback failCallback,final String ... key){
new AsyncTask<Void, Void, String>() {

protected String doInBackground(Void... params) {
StringBuffer parameter = new StringBuffer();
for (int i = 0; i < key.length; i+=2) {
parameter.append(key[i]).append("=").append(key[i+1]).append("&");
}
try {
URLConnection uc = null;
switch(method){
case POST:
uc = new URL(url).openConnection();
uc.setDoInput(true);
uc.setDoOutput(true);
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(uc.getOutputStream(),
Config.CHARSET));
bw.write(parameter.toString());
bw.flush();
break;
default:
uc = new URL(url+"?"+parameter.toString()).openConnection();
break;
}
System.out.println("request url:"+uc.getURL());
System.out.println("request data:"+parameter);
BufferedReader bf = new BufferedReader(new InputStreamReader(uc.getInputStream(), Config.CHARSET));
String line = null;
StringBuffer sb = new StringBuffer();
while ((line = bf.readLine()) != null) {
sb.append(line);
}
System.out.println("result:"+sb);
return sb.toString();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String result) {
if (result != null) {
if (successCallback != null) {
successCallback.onSuccess(result);
}
}else {
if (failCallback != null) {
failCallback.onFail();
}
}
super.onPostExecute(result);
}
}.execute();
}
public static interface SuccessCallback{
void onSuccess(String result);
}
public static interface FailCallback{
void onFail();
}
}