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HttpClient4.5を使用してProxy配下からアクセスする
package howtohttpclient;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.Header;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
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.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicHeader;
import org.apache.http.util.EntityUtils;
public class GetSiteInfo {
public static void main(String[] args) throws Exception {
//アクセス対象のURL
String uri ="www.google.co.jp";
String userAgent ="";
//Proxyサーバと認証情報のセット
CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(
new AuthScope("proxy_host", proxyport),
new UsernamePasswordCredentials("proxy_id", "proxy_password"));
//ヘッダー情報のセット
List<Header> headers = new ArrayList<Header>();
headers.add(new BasicHeader("Accept-Charset","utf-8"));
headers.add(new BasicHeader("Accept-Language","ja, en;q=0.8"));
headers.add(new BasicHeader("User-Agent",userAgent));
CloseableHttpClient httpclient = HttpClients.custom()
.setDefaultCredentialsProvider(credsProvider)
.setDefaultHeaders(headers).build();
try {
HttpHost target = new HttpHost(uri, 80, "http");
HttpHost proxy = new HttpHost("proxy_host", porxy_port);
RequestConfig config = RequestConfig.custom()
.setProxy(proxy)
.build();
HttpGet httpget = new HttpGet("");
httpget.setConfig(config);
System.out.println("Executing request " + httpget.getRequestLine() + " to " + target + " via " + proxy);
CloseableHttpResponse response = httpclient.execute(target, httpget);
try {
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
System.out.println(EntityUtils.toString(response.getEntity()));
} finally {
response.close();
}
} finally {
httpclient.close();
}
}
}
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