Java HttpClient4.3でProxy(https)を使うテスト

HttpClientHttpsProxyTest.java

import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.Header;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.message.BasicHeader;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

public class HttpClientHttpsProxyTest {

	public static void main(String[] args) {
		try {
			init();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	private static String domain = "https://hoge.com/";

	private static final int socketTimeout = 3000;
	private static final int connectTimeout = 3000;
	private static final String userAgent = "httpClient4.3-test";

	private static void init() throws IOException {
		System.out.println("===== HTTP POST Start =====");

		HttpHost proxy = new HttpHost("127.0.0.1", 8081);
		RequestConfig config = RequestConfig.custom()
	      .setProxy(proxy)
				.setConnectTimeout(connectTimeout)
				.setSocketTimeout(socketTimeout)
				.build();

		List<Header> httpHeaders = new ArrayList<>();
		httpHeaders.add(new BasicHeader("User-Agent", userAgent));
		httpHeaders.add(new BasicHeader("Accept-Charset",
				StandardCharsets.UTF_8.toString()));
		HttpClient httpClient = HttpClientBuilder.create()
				.setDefaultRequestConfig(config)
				.setDefaultHeaders(httpHeaders)
				.build();

		HttpPost postMethod = new HttpPost(domain + "api/fuga");
		List<NameValuePair> params = new ArrayList<>();
		params.add(new BasicNameValuePair("param1", "parameter-1"));
		params.add(new BasicNameValuePair("param2", "parameter-2"));
		postMethod.setEntity(new UrlEncodedFormEntity(params));

		HttpResponse response = httpClient.execute(postMethod);
		int responseCode = response.getStatusLine().getStatusCode();
		String responseEntity = EntityUtils.toString(response.getEntity(),StandardCharsets.UTF_8.toString());
		System.out.println("responseCode : " + responseCode);
		System.out.println("responseEntity : " + responseEntity);
	}

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>test</groupId>
	<artifactId>test</artifactId>
	<version>0.0.1-SNAPSHOT</version>

	<dependencies>
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpclient</artifactId>
			<version>4.3.1</version>
		</dependency>
	</dependencies>
</project>