httpclient 代理 问题

Question

public static void main(String[] args) throws Exception {

    System.out.println(doPost("http://172.21.0.158:8181/ShiroWeb/login"));
}

public static String doPost(String url) throws Exception{
    String result = ""; 
   // 创建HttpClient实例     
   CloseableHttpClient httpclient = HttpClients.createDefault();
   // 创建Post方法实例     
   HttpPost httpPost = new HttpPost(url);
   HttpHost proxy = new HttpHost("180.97.237.199", 8080);
   RequestConfig requestConfig = RequestConfig.custom().setProxy(proxy).build();
   httpPost.setConfig(requestConfig);
   httpPost.setHeader("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
   //执行请求
   CloseableHttpResponse  response = httpclient.execute(httpPost);    
   //返回的请求内容
   HttpEntity entity = response.getEntity(); 
   int statusCode =  response.getStatusLine().getStatusCode();
   if(statusCode == 200){
       result = entity.toString();
   }
return result;

}

用代理访问 www 开头的网站就可以，但是访问自己主机 就不行，因为我想看看一下ip是不是真的变成代理的ip . 。我在自己服务器打了断电并且用request.getr emoteAd dr() ; 获取ip 。 现在问题是这样访问不了 repones 状态吗：504.

Answer 1

http://www.cnblogs.com/QQParadise/articles/5020215.html