Java代码里面设置代理

   CloseableHttpClient httpClient = HttpClients.createDefault();


                //把代理设置到请求配置        代理IP     端口 192.2120.222.226

                HttpHost proxy = new HttpHost("192.2120.222.226", 80);
                //超时时间单位为毫秒
                RequestConfig defaultRequestConfig = RequestConfig.custom()
                        .setConnectTimeout(2000).setSocketTimeout(2000)
                        .setProxy(proxy).build();
                httpClient = HttpClients.custom().setDefaultRequestConfig(defaultRequestConfig).build();

            HttpResponse res = httpClient.execute(post);

//设置URLConnection 的代理

Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(host, port));  

URLConnection conn = url.openConnection(proxy);