httpclient4.3 设置代理请求

最新推荐文章于 2018-01-17 14:28:00 发布

最新推荐文章于 2018-01-17 14:28:00 发布 · 283 阅读

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#httpclient4.3 代理

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本文介绍如何使用HttpClient4.3版本进行HTTP请求处理，通过示例代码演示了配置代理服务器、设置请求参数并获取响应结果的过程。

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最近需要使用Httpclient做后台请求，使用的是httpclient4.3版本，apache网站上有，我这里就不提供下载链接了，搜一下就可以了，废话少说，直接上代码：

import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.NameValuePair;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

public class HttpClientTest {
	public static void main(String args[]) throws Exception {
		// 创建HttpClientBuilder
		HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
		// HttpClient
		CloseableHttpClient closeableHttpClient = httpClientBuilder.build();
		// 依次是目标请求地址，端口号,协议类型
		HttpHost target = new HttpHost("10.10.100.102:8080/mytest", 8080,
				"http");
		// 依次是代理地址，代理端口号，协议类型
		HttpHost proxy = new HttpHost("yourproxy", 8080, "http");
		RequestConfig config = RequestConfig.custom().setProxy(proxy).build();

		// 请求地址
		HttpPost httpPost = new HttpPost("http://10.10.100.102:8080/mytest");
		httpPost.setConfig(config);
		// 创建参数队列
		List<NameValuePair> formparams = new ArrayList<NameValuePair>();
		// 参数名为pid，值是2
		formparams.add(new BasicNameValuePair("pid", "2"));

		UrlEncodedFormEntity entity;
		try {
			entity = new UrlEncodedFormEntity(formparams, "UTF-8");
			httpPost.setEntity(entity);
			CloseableHttpResponse response = closeableHttpClient.execute(
					target, httpPost);
			// getEntity()
			HttpEntity httpEntity = response.getEntity();
			if (httpEntity != null) {
				// 打印响应内容
				System.out.println("response:"
						+ EntityUtils.toString(httpEntity, "UTF-8"));
			}
			// 释放资源
			closeableHttpClient.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}