Android通過http協議數據交互的兩種方式

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連線 */
		HttpPost httpRequest = new HttpPost(uriAPI);
		// Post運作傳送變數必須用NameValuePair[]陣列儲存
		// 傳參數 服務端獲取的方法爲request.getParameter("name")
		List<NameValuePair> params = new ArrayList<NameValuePair>();
		params.add(new BasicNameValuePair("name", "this is post"));
		try {

			// 發出HTTP request
			httpRequest.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
			// 取得HTTP response
			HttpResponse httpResponse = new DefaultHttpClient().execute(httpRequest);

			// 若狀態碼爲200 ok
			if (httpResponse.getStatusLine().getStatusCode() == 200) {
				// 取出迴應字串
				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";
		// 建立連接
		URL url = new URL(pathUrl);
		HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();

		// //設置連接屬性
		httpConn.setDoOutput(true);// 使用 URL 連接進行輸出
		httpConn.setDoInput(true);// 使用 URL 連接進行輸入
		httpConn.setUseCaches(false);// 忽略緩存
		httpConn.setRequestMethod("POST");// 設置URL請求方法
		String requestString = "客服端要以以流方式發送到服務端的數據...";

		// 設置請求屬性
		// 獲得數據字節數據，請求數據流的編碼，必須和下面服務器端處理請求流的編碼一致
		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");// 維持長連接
		httpConn.setRequestProperty("Charset", "UTF-8");
		//
		String name = URLEncoder.encode("黃武藝", "utf-8");
		httpConn.setRequestProperty("NAME", name);

		// 建立輸出流，並寫入數據
		OutputStream outputStream = httpConn.getOutputStream();
		outputStream.write(requestStringBytes);
		outputStream.close();
		// 獲得響應狀態
		int responseCode = httpConn.getResponseCode();
		if (HttpURLConnection.HTTP_OK == responseCode) {// 連接成功

			// 當正確響應時處理數據
			StringBuffer sb = new StringBuffer();
			String readLine;
			BufferedReader responseReader;
			// 處理響應流，必須與服務器響應流輸出的編碼一致
			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();
	}
}

 補充：

標準的http post傳輸方式，以上面爲例子，如下：

requestStringBytes =“customerId=3461&nickName=黃&[email protected]&areaCode=0592&cityCode=350200&registerPhone=18906051120”服務端通過getParamer("customerId")獲取。

如果把參數值放在URL，例如http://172.20.0.206:8082/TestServelt/login.do?customerId=3461&nickName=黃&[email protected]&areaCode=0592&cityCode=350200&registerPhone=18906051120

雖然是以post方式傳輸，但是實際上還是以get方式提交