HttpClient支持使用代理服務器以及身份認證

HttpClient Authentication Doument: 
http://hc.apache.org/httpclient-3.x/authentication.html 

HttpClient支持使用代理服務器以及身份認證 

1、代理服務器的設置很簡單： 
HttpClient client = new HttpClient(); 
client.getHostConfiguration().setProxy(host, port); 

2、身份驗證： 
HttpClient client = new HttpClient(); 
client.getParams().setAuthenticationPreemptive(true); 
Credentials defaultcreds = new UsernamePasswordCredentials("username", "password"); 
client.getState().setCredentials(AuthScope.ANY, defaultcreds);