Apache HttpComponents Client 4.4.1 GA 发布，此版本主要更新信息如下：
Marked RFC 2109, RFC 2965, Netscape draft cookie specs as obsolete
Contributed by Oleg Kalnichevski <olegk at apache.org>[HTTPCLIENT-1633] RFC6265CookieSpecProvider compatibility level setting has no effect.
Contributed by Oleg Kalnichevski <olegk at apache.org>[HTTPCLIENT-1628]: Auth cache can fail when domain name contains uppercase characters.
Contributed by Dennis Ju <dejuknow at gmail.com>[HTTPCLIENT-1609] Stale connection check in PoolingHttpClientConnectionManager has no effect.
Internal connection pool does not correctly implement connection validation.
Contributed by Charles Lip <rene1 at singnet.com.sg>
详细信息请查看发行页面。
下载地址为：
http://hc.apache.org/downloads.cgi
HttpComponents 也就是以前的httpclient项目，可以用来提供高效的、最新的、功能丰富的支持 HTTP 协议的客户端/服务器编程工具包，并且它支持 HTTP 协议最新的版本和建议。不过现在的 HttpComponents 包含多个子项目，有：
HttpComponents Core
HttpComponents Client
HttpComponents AsyncClient
Commons HttpClient
引用来自“komelio”的评论
早就不用它了...没那么多精力老跟着它改来改去.
引用来自“三字经”的评论
那http client 用的神马组件？引用来自“komelio”的评论
早就不用它了...没那么多精力老跟着它改来改去.
没那么多精力老跟着它改来改去.