小编Mar*_*tin的帖子

我正在使用带有身份验证的代理运行一些异步 GET 请求。执行 HTTPS 请求时，我总是在 2 个成功的异步请求后遇到异常：java.lang.IllegalArgumentException: Auth scheme may not be null

在没有代理的情况下执行 GET 请求或使用 http 而不是 https 时，从未发生异常。

来自Apache HttpAsyncClient 示例的示例

HttpHost proxy = new HttpHost("proxyname", 3128);
CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(new AuthScope(proxy), new UsernamePasswordCredentials("proxyuser", "proxypass"));

CloseableHttpAsyncClient httpClient = HttpAsyncClients.custom().setDefaultCredentialsProvider(credsProvider).build();

httpClient.start();
RequestConfig config = RequestConfig.custom().setProxy(proxy).build();

for (int i = 0; i < 3; i++) {
  HttpGet httpGet = new HttpGet(url);
  httpGet.setConfig(config);

  httpClient.execute(httpGet, new FutureCallback<HttpResponse>() {

    public void failed(Exception ex) {
      ex.printStackTrace(); // Exception occures here afther …