Android 如何用HttpClient 以Post方式提交数据并添加http头信息

如何 post json格式的数据，并附加http头，接受返回数据，请看下面的代码：

private void HttpPostData() { try { HttpClient httpclient = new DefaultHttpClient(); String uri = "http://www.yourweb.com"; HttpPost httppost = new HttpPost(uri); //添加http头信息 httppost.addHeader("Authorization", "your token"); //认证token httppost.addHeader("Content-Type", "application/json"); httppost.addHeader("User-Agent", "imgfornote"); //http post的json数据格式： {"name": "your name","parentId": "id_of_parent"} JSONObject obj = new JSONObject(); obj.put("name", "your name"); obj.put("parentId", "your parentid"); httppost.setEntity(new StringEntity(obj.toString())); HttpResponse response; response = httpclient.execute(httppost); //检验状态码，如果成功接收数据 int code = response.getStatusLine().getStatusCode(); if (code == 200) { String rev = EntityUtils.toString(response.getEntity());//返回json格式： {"id": "27JpL~j4vsL0LX00E00005","version": "abc"} obj = new JSONObject(rev); String id = obj.getString("id"); String version = obj.getString("version"); } } catch (ClientProtocolException e) { } catch (IOException e) { } catch (Exception e) { } }主要用到的类有：org.apache.http.client.HttpClient 、org.apache.http.client.methods.HttpPost 和org.json.JSONObject