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

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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