JSP开发中Apache-HTTPClient 用户验证的实例详解

public class HttpClientUtils {

  protected static final Logger LOG = LoggerFactory.getLogger(HttpClientUtils.class);

  private static final String AUTHENKEY = "Authorization";

  private static final String BASICKEY = "Basic ";

  public static String getConnect(String url,String username,String password) {

    CloseableHttpResponse response = null;

    CloseableHttpClient client = HttpClients.createDefault();

    HttpGet httpGet = new HttpGet(url);
    Base64 token = new Base64();
    String authenticationEncoding = token.encodeAsString(new String(username + ":" + password).getBytes());

    httpGet.setHeader(AUTHENKEY, BASICKEY + authenticationEncoding);

    String responseContent = "";
    try {
      response = client.execute(httpGet);

      HttpEntity entity = response.getEntity();

      responseContent = EntityUtils.toString(entity, "UTF-8");

    } catch (IOException e) {
      LOG.error(e.toString());
    } finally {
      if (response != null) {
        try {
          response.close();
        } catch (IOException e) {
          LOG.error(e.toString());
        }
      }

      if (client != null) {
        try {
          client.close();
        } catch (IOException e) {
          LOG.error(e.toString());
        }
      }
    }

    return responseContent;
  }


}