HttpClient组件中如何使用代理IP呢?

实现思路:
    定义一个HttpPost对象,并设置相应的代理IP
	然后RequestConfig中设置Proxy为HttpPost对象

import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class DemoTest {

    public static void main(String[] args)throws Exception {
        CloseableHttpClient httpClient=HttpClients.createDefault(); // 创建httpClient实例
        HttpGet httpGet=new HttpGet("https://www.java265.com/"); // 创建httpget实例
        HttpHost proxy=new HttpHost("8.8.8.8", 99);
        RequestConfig requestConfig=RequestConfig.custom().setProxy(proxy).build();
        httpGet.setConfig(requestConfig);
        httpGet.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:50.0) Gecko/20100101 Firefox/50.0");
        CloseableHttpResponse response=httpClient.execute(httpGet); // 执行http get请求
        HttpEntity entity=response.getEntity(); // 获取返回实体
        System.out.println("网页内容："+EntityUtils.toString(entity, "utf-8")); // 获取网页内容
        response.close(); // response关闭
        httpClient.close(); // httpClient关闭
    }
}