CloseableHttpClient httpclient = HttpClients.createDefault();
HttpGet httpGet = new HttpGet(address);
String encoding = Base64.encodeBase64String((username() + ":" + password()).getBytes());
httpGet.setHeader("Authorization", "Basic " + encoding);
HttpResponse response = httpclient.execute(httpGet);
转载于:https://my.oschina.net/crazyharry/blog/1105211