private static void httpRequest(){

          String username = "XX";

          String password = "XX";

          String requestURL = "https://XXXX";

          URL url;

          URLConnection connection = null;

          try {

              url = new URL(requestURL);

              connection = (HttpURLConnection) url.openConnection();

              String encoding = new String(Base64.encode(new String(username+":"+password).getBytes()));

              ((HttpURLConnection) connection).setRequestMethod("GET");

              connection.setRequestProperty("Content-Type", "text/plain");

              connection.setRequestProperty("charset", "UTF-8");

              connection.setRequestProperty( "Authorization","Basic "+encoding);

              connection.connect();

              BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream(),"utf-8"));

              File fp = new File("/tmp/xml.txt");// 获取整个返回的结果入/tmp/xml.txt中

              PrintWriter pfp= new PrintWriter(fp);

              pfp.print(in.readLine());// 返回结果只有一行……

 　　　　　　　 pfp.close(); 

 　　　　　　　 in.close(); 

 　　　　　　} catch (MalformedURLException e) { 

  　　　　　　　　// TODO Auto-generated catch block

  　　　　　　　　e.printStackTrace();

 　　　　　　} catch (IOException e) {

 　　　　　　　　// TODO Auto-generated catch block

 　　　　　　　　 e.printStackTrace();

 　　　　　　}finally{

 　　　　　　}

 　　　　 }