Using proxy with HttpClient

SampleHTTPCall.java

//~--- non-JDK imports --------------------------------------------------------

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.HttpVersion;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.params.HttpClientParams;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.params.ConnRoutePNames;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicHttpResponse;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpParams;
import org.apache.http.util.EntityUtils;

//~--- JDK imports ------------------------------------------------------------

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.URI;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.Properties;

public class SampleHTTPCall {

    public static void main(String[] args) throws Exception {
        HttpHost proxy = new HttpHost("proxy.server.com", 80, "http");

        DefaultHttpClient httpclient = new DefaultHttpClient();
        try {

            httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY,
                    proxy);

            HttpHost target = new HttpHost("google.com", 80, "http");
            HttpGet req = new HttpGet("/");

            System.out.println("executing request to " + target + " via "
                    + proxy);
            HttpResponse rsp = httpclient.execute(target, req);
            HttpEntity entity = rsp.getEntity();

            System.out.println("----------------------------------------");
            System.out.println(rsp.getStatusLine());
            Header[] headers = rsp.getAllHeaders();
            for (int i = 0; i < headers.length; i++) {
                System.out.println(headers[i]);
            }
            System.out.println("----------------------------------------");

            if (entity != null) {
                System.out.println(EntityUtils.toString(entity));
            }

        } finally {
            // When HttpClient instance is no longer needed,
            // shut down the connection manager to ensure
            // immediate deallocation of all system resources
            httpclient.getConnectionManager().shutdown();
        }
    }

}