httpclient的代理问题

[_吹雪_]

麻烦问下大神们，我是这样使用代理的:
HttpClient httpClient=new HttpClient();
httpClient.getHostConfiguration().setProxy("192.168.0.1", 9527);
httpClient.getParams().setAuthenticationPreemptive(true);
可编译器一直报这样的错误是为什么：
WARNING: Required proxy credentials not available for BASIC <any realm>@192.168.0.1:9527
WARNING: Preemptive authentication requested but no default proxy credentials available
WARNING: Required credentials not available for BASIC <any realm>@www.google.com:80
WARNING: Preemptive authentication requested but no default credentials available

[花谢尊前不敢香]

是不是需要用户名验证的？ 加上httpClient.getState().setProxyCredentials(AuthScope.ANY, new UsernamePasswordCredentials("xxx","ooo")); 看看

[_吹雪_]

我不知道代理服务器的用户名和密码啊。。。