java 使用 HttpProxy 通过抢先式身份验证连接到主机
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Using HttpProxy to connect to a host with preemtive authentication
提问by Espen Herseth Halvorsen
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:
我正在使用 HttpClient 连接到需要 BasicAUTH 的主机。但是代理不需要任何身份验证。我已将其设置如下：
private final HttpClient httpClient; // Spring injected
Setting Basic auth:
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);
}
Setting proxy:
设置代理：
private void setProxy(final String proxyHost, final int proxyPort) {
hostConfiguration hostConfiguration = httpClient.getHostConfiguration();
hostConfiguration.setProxy(proxyHost, proxyPort);
}
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)
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（或至少了解它们出现的原因）
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
Any ideas?
有任何想法吗？
回答by Will Iverson
Here's an example from the Apache site for a proxy w/o credentials:
以下是来自 Apache 站点的无凭据代理示例：
(From http://hc.apache.org/httpcomponents-client-ga/examples.html)
（来自http://hc.apache.org/httpcomponents-client-ga/examples.html）
You are getting the error because you are passing in a username/password and don't need to.
您收到错误是因为您传入了用户名/密码并且不需要。
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 couldjust ignore that.
WARN 消息来自记录器 (http://hc.apache.org/httpcomponents-client-ga/logging.html) - 根据您设置记录器的方式，您可以忽略它。
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.
花了太多时间试图让 Java 应用程序处理代理服务器，我可以告诉你，使用 Proxifier（http://www.proxifier.com/for Mac OS X 和 Windows）或 CNTLM 等工具( http://cntlm.sourceforge.net/) 更容易、更灵活、更容易调试，并保持代码干净。
