HtmlUnit - 通过代理连接：URLConnection OK，WebClient KO

Question

我无法通过WebClient代理访问http页面。

当我使用URLConnection时没有问题：

Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("hostname", 8080));

URLConnection urlConnection = new URL("https://www.google.com/").openConnection(proxy);

BufferedReader bufferedReader = null;

try {

    bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));

    String line;

    while ((line = bufferedReader.readLine()) != null) {

        System.out.println(line);
    }

} finally {

    if (bufferedReader != null) {

        bufferedReader.close();
    }
}

但是当我尝试使用WebClient时，我遇到了一个错误：

WebClient webClient = new WebClient(BrowserVersion.CHROME, "hostname", 8080);

webClient.getOptions().setThrowExceptionOnFailingStatusCode(false);
webClient.getOptions().setThrowExceptionOnScriptError(false);

HtmlPage htmlPage = webClient.getPage("https://www.google.com/");

System.out.println(htmlPage.asText());

错误是“需要407代理身份验证.ISA Server需要授权才能完成请求。拒绝访问Web代理筛选器。”

我不明白为什么URLConnection没有身份验证问题。

感谢您的帮助！