使用 httpclient 4.x 验证单个请求

Question

我有一个由多个线程共享的HttpClient 实例。我想用它来发出一个经过身份验证的请求。因为应该只对单个请求进行身份验证，所以我不想修改HttpClient 实例，如documentation 中所述。这是我已经解决的问题，但它不起作用。据我所知，看起来根本没有使用CredentialsProvider。有什么建议吗？

HttpContext context = null;
if(feedSpec.isAuthenticated()) {
  context = new BasicHttpContext();
  CredentialsProvider credsProvider = new BasicCredentialsProvider();
  credsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(feedSpec.getHttpUsername(), feedSpec.getHttpPassword()));
  context.setAttribute(ClientContext.CREDS_PROVIDER, credsProvider);
  context.setAttribute(ClientPNames.HANDLE_AUTHENTICATION, true);
}
HttpGet httpGet = new HttpGet(feedSpec.getUri());
HttpResponse httpResponse = httpClient.execute(httpGet, context);

Answer 1

原来我连接的服务器只提供 NTLM 身份验证。我使用指南here 实现了 NTLM 身份验证。我修改了我的问题中列出的代码，看起来像这样，它可以工作：

HttpContext context = null;
if(feedSpec.isAuthenticated()) {
    context = new BasicHttpContext();
    CredentialsProvider credsProvider = new BasicCredentialsProvider();
    credsProvider.setCredentials(AuthScope.ANY, new NTCredentials(feedSpec.getHttpUsername(), feedSpec.getHttpPassword(), "", ""));
    context.setAttribute(ClientContext.CREDS_PROVIDER, credsProvider);
}
HttpGet httpGet = new HttpGet(feedSpec.getUri());
HttpResponse httpResponse = httpClient.execute(httpGet, context);