用httpPost对JSON发送和接收的例子

                                                             用httpPost对JSON发送和接收的例子

HTTPPost发送JSON：

private  static  final String APPLICATION_JSON = "application/json";
    
     private  static  final String CONTENT_TYPE_TEXT_JSON = "text/json";

public  static  void httpPostWithJSON(String url, String json)  throws Exception {
         //  将JSON进行UTF-8编码,以便传输中文
        String encoderJson = URLEncoder.encode(json, HTTP.UTF_8);
        
        DefaultHttpClient httpClient =  new DefaultHttpClient();
        HttpPost httpPost =  new HttpPost(url);
        httpPost.addHeader(HTTP.CONTENT_TYPE, APPLICATION_JSON);
        
        StringEntity se =  new StringEntity(encoderJson);
        se.setContentType(CONTENT_TYPE_TEXT_JSON);
        se.setContentEncoding( new BasicHeader(HTTP.CONTENT_TYPE, APPLICATION_JSON));
        httpPost.setEntity(se);
        httpClient.execute(httpPost);
    }

接收HTTPPost中的JSON:

public  static String receivePost(HttpServletRequest request)  throws IOException, UnsupportedEncodingException {
        
         //  读取请求内容
        BufferedReader br =  new BufferedReader( new InputStreamReader(request.getInputStream()));
        String line =  null;
        StringBuilder sb =  new StringBuilder();
         while((line = br.readLine())!= null){
            sb.append(line);
        }

         //  将资料解码
        String reqBody = sb.toString();
         return URLDecoder.decode(reqBody, HTTP.UTF_8);

    }

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