HttpURLConnection connection = null;
try {
 URL url = new URL("https://www.xxx.com/");
 connection = (HttpURLConnection) url.openConnection();
 connection.setRequestMethod("GET");//設(shè)置訪問方式為“GET”
 connection.setConnectTimeout(8000);//設(shè)置連接服務(wù)器超時時間為8秒
 connection.setReadTimeout(8000);//設(shè)置讀取服務(wù)器數(shù)據(jù)超時時間為8秒

 if (HttpURLConnection.HTTP_OK == connection.getResponseCode()) {
  //從服務(wù)器獲取響應(yīng)并把響應(yīng)數(shù)據(jù)轉(zhuǎn)為字符串打印
  InputStream in = connection.getInputStream();
  BufferedReader reader = new BufferedReader(new InputStreamReader(in));

  StringBuilder response = new StringBuilder();
  String line;
  while (null != (line = reader.readLine())) {
    response.append(line);
  }
  Log.d(TAG, response.toString());
 }
} catch (Exception e) {
 e.printStackTrace();
} finally {
 if (null!= connection) {
   connection.disconnect();
 }
}

HttpURLConnection connection = null;
  try{
   URL url = new URL("https://www.xxx.com/");
   connection = (HttpURLConnection) url.openConnection();

   connection.setRequestMethod("POST");
   connection.setConnectTimeout(8000);
   connection.setReadTimeout(8000);
   connection.setDoOutput(true);// 使用 URL 連接進(jìn)行輸出
   connection.setDoInput(true);// 使用 URL 連接進(jìn)行輸入
   connection.setUseCaches(false);// 忽略緩存

   // 建立輸出流，并寫入數(shù)據(jù)
   OutputStream outputStream = connection.getOutputStream();
   DataOutputStream dataOutputStream = new DataOutputStream(outputStream);
   dataOutputStream.writeBytes("username=admin&password=888888");
   dataOutputStream.close();

   if (HttpURLConnection.HTTP_OK == connection.getResponseCode()) {
    // 當(dāng)正確響應(yīng)時處理數(shù)據(jù)
    StringBuffer response = new StringBuffer();
    String line;
    BufferedReader responseReader = 
      new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));
    // 處理響應(yīng)流，必須與服務(wù)器響應(yīng)流輸出的編碼一致
    while (null != (line = responseReader.readLine())) {
     response.append(line);
    }
    responseReader.close();
    Log.d(TAG, response.toString());
   }

  } catch (Exception e) {
   e.printStackTrace();
  } finally {
   if (null!= connection) {
    connection.disconnect();
   }
  }