Android面向HTTP協議發送get請求

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/** * 採用get請求的方式 *  * @param username * @param password * @return null表示求得的路徑有問題,text返回請求得到的資料 */public static String getRequest(String username, String password) {try {String path = "http://172.22.64.156:8080/0001AndroidWebService/LoginServlet?username="+ URLEncoder.encode(username)+ "&password="+ URLEncoder.encode(password);URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setReadTimeout(500);conn.setRequestMethod("GET");int code = conn.getResponseCode();if (code == 200) {// 請求成功InputStream is = conn.getInputStream();String text = StreamUtil.readStream(is);return text;} else {// 請求失敗return null;}} catch (Exception e) {e.printStackTrace();}return null;}