Android應用經常會和伺服器端互動,這就需要手機用戶端發送網路請求,下面介紹四種常用網路請求方式,我這邊是通過Android單元測試來完成這四種方法的,還不清楚Android的單元測試的同學們請看Android開發技巧總結中的Android單元測試的步驟一文。
java.net包中的HttpURLConnection類
Get方式:
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- // Get方式請求
- public static void requestByGet() throws Exception {
- String path = "https://reg.163.com/logins.jsp?id=helloworld&pwd=android";
- // 建立一個URL對象
- URL url = new URL(path);
- // 開啟一個HttpURLConnection串連
- HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
- // 設定連線逾時時間
- urlConn.setConnectTimeout(5 * 1000);
- // 開始串連
- urlConn.connect();
- // 判斷請求是否成功
- if (urlConn.getResponseCode() == HTTP_200) {
- // 擷取返回的資料
- byte[] data = readStream(urlConn.getInputStream());
- Log.i(TAG_GET, "Get方式請求成功,返回資料如下:");
- Log.i(TAG_GET, new String(data, "UTF-8"));
- } else {
- Log.i(TAG_GET, "Get方式請求失敗");
- }
- // 關閉串連
- urlConn.disconnect();
- }
Post方式:
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- // Post方式請求
- public static void requestByPost() throws Throwable {
- String path = "https://reg.163.com/logins.jsp";
- // 請求的參數轉換為byte數組
- String params = "id=" + URLEncoder.encode("helloworld", "UTF-8")
- + "&pwd=" + URLEncoder.encode("android", "UTF-8");
- byte[] postData = params.getBytes();
- // 建立一個URL對象
- URL url = new URL(path);
- // 開啟一個HttpURLConnection串連
- HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
- // 設定連線逾時時間
- urlConn.setConnectTimeout(5 * 1000);
- // Post請求必須設定允許輸出
- urlConn.setDoOutput(true);
- // Post請求不能使用緩衝
- urlConn.setUseCaches(false);
- // 設定為Post請求
- urlConn.setRequestMethod("POST");
- urlConn.setInstanceFollowRedirects(true);
- // 配置請求Content-Type
- urlConn.setRequestProperty("Content-Type",
- "application/x-www-form-urlencode");
- // 開始串連
- urlConn.connect();
- // 發送請求參數
- DataOutputStream dos = new DataOutputStream(urlConn.getOutputStream());
- dos.write(postData);
- dos.flush();
- dos.close();
- // 判斷請求是否成功
- if (urlConn.getResponseCode() == HTTP_200) {
- // 擷取返回的資料
- byte[] data = readStream(urlConn.getInputStream());
- Log.i(TAG_POST, "Post請求方式成功,返回資料如下:");
- Log.i(TAG_POST, new String(data, "UTF-8"));
- } else {
- Log.i(TAG_POST, "Post方式請求失敗");
- }
- }
org.apache.http包中的HttpGet和HttpPost類
Get方式:
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- // HttpGet方式請求
- public static void requestByHttpGet() throws Exception {
- String path = "https://reg.163.com/logins.jsp?id=helloworld&pwd=android";
- // 建立HttpGet對象
- HttpGet httpGet = new HttpGet(path);
- // 擷取HttpClient對象
- HttpClient httpClient = new DefaultHttpClient();
- // 擷取HttpResponse執行個體
- HttpResponse httpResp = httpClient.execute(httpGet);
- // 判斷是夠請求成功
- if (httpResp.getStatusLine().getStatusCode() == HTTP_200) {
- // 擷取返回的資料
- String result = EntityUtils.toString(httpResp.getEntity(), "UTF-8");
- Log.i(TAG_HTTPGET, "HttpGet方式請求成功,返回資料如下:");
- Log.i(TAG_HTTPGET, result);
- } else {
- Log.i(TAG_HTTPGET, "HttpGet方式請求失敗");
- }
- }
Post方式:
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- // HttpPost方式請求
- public static void requestByHttpPost() throws Exception {
- String path = "https://reg.163.com/logins.jsp";
- // 建立HttpPost對象
- HttpPost httpPost = new HttpPost(path);
- // Post參數
- List<NameValuePair> params = new ArrayList<NameValuePair>();
- params.add(new BasicNameValuePair("id", "helloworld"));
- params.add(new BasicNameValuePair("pwd", "android"));
- // 設定字元集
- HttpEntity entity = new UrlEncodedFormEntity(params, HTTP.UTF_8);
- // 設定參數實體
- httpPost.setEntity(entity);
- // 擷取HttpClient對象
- HttpClient httpClient = new DefaultHttpClient();
- // 擷取HttpResponse執行個體
- HttpResponse httpResp = httpClient.execute(httpPost);
- // 判斷是夠請求成功
- if (httpResp.getStatusLine().getStatusCode() == HTTP_200) {
- // 擷取返回的資料
- String result = EntityUtils.toString(httpResp.getEntity(), "UTF-8");
- Log.i(TAG_HTTPGET, "HttpPost方式請求成功,返回資料如下:");
- Log.i(TAG_HTTPGET, result);
- } else {
- Log.i(TAG_HTTPGET, "HttpPost方式請求失敗");
- }
- }