Android经过http协议数据交互的两种方式
Android通过http协议数据交互的两种方式
方式一:HttpPost(import org.apache.http.client.methods.HttpPost)
private Button button1, button2, button3; private TextView textView1; button1.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub // URLַ // String uriAPI = // "http://www.dubblogs.cc:8751/Android/Test/API/Post/index.php"; String uriAPI = "http://172.20.0.206:8082//TestServelt/login.do"; /* 建立HTTP Post连线 */ HttpPost httpRequest = new HttpPost(uriAPI); // Post运作传送变数必须用NameValuePair[]阵列储存 // 传参数 服务端获取的方法为request.getParameter("name") List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("name", "this is post")); try { // 发出HTTP request httpRequest.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8)); // 取得HTTP response HttpResponse httpResponse = new DefaultHttpClient().execute(httpRequest); // 若状态码为200 ok if (httpResponse.getStatusLine().getStatusCode() == 200) { // 取出回应字串 String strResult = EntityUtils.toString(httpResponse.getEntity()); textView1.setText(strResult); } else { textView1.setText("Error Response" + httpResponse.getStatusLine().toString()); } } catch (ClientProtocolException e) { textView1.setText(e.getMessage().toString()); e.printStackTrace(); } catch (UnsupportedEncodingException e) { textView1.setText(e.getMessage().toString()); e.printStackTrace(); } catch (IOException e) { textView1.setText(e.getMessage().toString()); e.printStackTrace(); } } });
方式二:HttpURLConnection、URL(import java.net.HttpURLConnection;import java.net.URL;import java.net.URLEncoder;)
private void httpUrlConnection() { try { String pathUrl = "http://172.20.0.206:8082/TestServelt/login.do"; // 建立连接 URL url = new URL(pathUrl); HttpURLConnection httpConn = (HttpURLConnection) url.openConnection(); // //设置连接属性 httpConn.setDoOutput(true);// 使用 URL 连接进行输出 httpConn.setDoInput(true);// 使用 URL 连接进行输入 httpConn.setUseCaches(false);// 忽略缓存 httpConn.setRequestMethod("POST");// 设置URL请求方法 String requestString = "客服端要以以流方式发送到服务端的数据..."; // 设置请求属性 // 获得数据字节数据,请求数据流的编码,必须和下面服务器端处理请求流的编码一致 byte[] requestStringBytes = requestString.getBytes(ENCODING_UTF_8); httpConn.setRequestProperty("Content-length", "" + requestStringBytes.length); httpConn.setRequestProperty("Content-Type", "application/octet-stream"); httpConn.setRequestProperty("Connection", "Keep-Alive");// 维持长连接 httpConn.setRequestProperty("Charset", "UTF-8"); // String name = URLEncoder.encode("黄武艺", "utf-8"); httpConn.setRequestProperty("NAME", name); // 建立输出流,并写入数据 OutputStream outputStream = httpConn.getOutputStream(); outputStream.write(requestStringBytes); outputStream.close(); // 获得响应状态 int responseCode = httpConn.getResponseCode(); if (HttpURLConnection.HTTP_OK == responseCode) {// 连接成功 // 当正确响应时处理数据 StringBuffer sb = new StringBuffer(); String readLine; BufferedReader responseReader; // 处理响应流,必须与服务器响应流输出的编码一致 responseReader = new BufferedReader(new InputStreamReader(httpConn.getInputStream(), ENCODING_UTF_8)); while ((readLine = responseReader.readLine()) != null) { sb.append(readLine).append("\n"); } responseReader.close(); tv.setText(sb.toString()); } } catch (Exception ex) { ex.printStackTrace(); } }
补充:
标准的http post传输方式,以上面为例子,如下:
requestStringBytes =“customerId=3461&nickName=黄&email=linafei1111@163.com&areaCode=0592&cityCode=350200®isterPhone=18906051120”服务端通过getParamer("customerId")获取。
如果把参数值放在URL,例如http://172.20.0.206:8082/TestServelt/login.do?customerId=3461&nickName=黄&email=linafei1111@163.com&areaCode=0592&cityCode=350200®isterPhone=18906051120
虽然是以post方式传输,但是实际上还是以get方式提交