HttpComponents —— HTTP上下文环境（HttpContext）

HttpGet httpget =new HttpGet("http://www.baidu.com/");

HttpResponse response = client.execute(httpget, localContext);

HttpHost target = (HttpHost) localContext.getAttribute(ExecutionContext.HTTP_TARGET_HOST);

System.out.println("Final target: " + target);

HttpEntity entity = response.getEntity();

if (entity !=null) {

EntityUtils.consume(entity);

}

输出：

Final target: http://www.baidu.com