使用HttpProxy通过预先认证连接到主机

|| 我正在使用HttpClient连接到需要BasicAUTH的主机。但是该代理不需要任何身份验证。我将其设置如下:
private final HttpClient httpClient; // Spring injected
设置基本身份验证:
private void setBasicAuth(final String username, final String password) {
    httpClient.getState().setCredentials(new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT, AuthScope.ANY_REALM), new UsernamePasswordCredentials(username, password));
    httpClient.getParams().setAuthenticationPreemptive(true);
}
设置代理:
private void setProxy(final String proxyHost, final int proxyPort) {
    hostConfiguration hostConfiguration = httpClient.getHostConfiguration();
    hostConfiguration.setProxy(proxyHost, proxyPort);
}
但是我在运行代码时收到以下警告。一切正常,但我也想摆脱警告(或至少理解为什么会出现警告)
WARN  o.a.c.httpclient.HttpMethodDirector - Required proxy credentials not available for BASIC <any realm>@proxy.XXXXXX.no:3128
WARN  o.a.c.httpclient.HttpMethodDirector - Preemptive authentication requested but no default proxy credentials available
有任何想法吗?     
已邀请:
这是来自Apache站点的不带凭据代理的示例: http://hc.apache.org/httpcomponents-client-ga/httpclient/examples/org/apache/http/examples/client/ClientExecuteProxy.java (来自http://hc.apache.org/httpcomponents-client-ga/examples.html) 您收到错误消息是因为您传入的是用户名/密码,而不必这样做。 WARN消息来自记录器(http://hc.apache.org/httpcomponents-client-ga/logging.html)-根据记录器的设置方式,您可以忽略它。 我花了很多时间来尝试使Java应用程序与代理服务器打交道,我可以告诉您使用诸如Proxifier(对于Mac OS X和Windows为http://www.proxifier.com/)或CNTLM之类的工具(http://cntlm.sourceforge.net/)更加容易,灵活,易于调试,并且保持代码干净。     

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