使用HttpProxy通过preemtive身份验证连接到主机

问题描述：

我正在使用HttpClient连接到需要BasicAUTH的主机。但代理不需要任何身份验证。我已将其设置如下：

I am using HttpClient to connect to a host which requires BasicAUTH. But the proxy doesn't require any authentication. I have set it up as follows:

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);
}

但是在运行代码时我收到以下警告。一切正常，但我也想摆脱警告（或者至少理解它们出现的原因）

But I get the following warnings when running the code. Everything works, but I want to get rid of the warnings as well (or at least understand why they appears)

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

任何想法？

答

这里是来自Apache站点的代理没有凭证的示例：

Here's an example from the Apache site for a proxy w/o credentials:

http://hc.apache.org/httpcomponents-client-ga/httpclient/examples/org/apache/http/ examples / client / ClientExecuteProxy.java

（来自 http://hc.apache.org/httpcomponents-cl ient-ga / examples.html ）

您收到错误是因为您传递了用户名/密码而且不需要。

You are getting the error because you are passing in a username/password and don't need to.

WARN消息来自记录器（http://hc.apache.org/httpcomponents-client-ga/logging.html） - 取决于你的记录器的方式设置你可能只是忽略它。

The WARN messages are coming from the logger (http://hc.apache.org/httpcomponents-client-ga/logging.html) - depending on how you have your logger set up you could just ignore that.

花了太多时间处理尝试使用代理服务器处理Java应用程序，我可以告诉您使用Proxifier等工具（ http://www.proxifier.com/ for Mac OS X和Windows）或CNTLM（ http://cntlm.sourceforge.net/ ）更容易，更灵活，更容易调试，并保持代码清洁。

Having spent WAY too much time dealing with trying to make a Java application deal with proxy servers, I can tell you that using a tool such as Proxifier ( http://www.proxifier.com/ for Mac OS X and Windows) or CNTLM ( http://cntlm.sourceforge.net/) was much easier, more flexible, easier to debug, and kept the code clean.

使用HttpProxy通过preemtive身份验证连接到主机

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