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：

view plaincopy to clipboardprint?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) {  
    } 
} 
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"}