HttpClientExample.java

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

public class HttpClientExample {

	private final String USER_AGENT = "Mozilla/5.0";

	public static void main(String[] args) throws Exception {

		HttpClientExample http = new HttpClientExample();

		System.out.println("Testing 1 - Send Http GET request");
		http.sendGet();

		System.out.println("\nTesting 2 - Send Http POST request");
		http.sendPost();

	}

	// HTTP GET request
	private void sendGet() throws Exception {

		String url = "http://www.google.com/search?q=developer";

		HttpClient client = new DefaultHttpClient();
		HttpGet request = new HttpGet(url);

		// add request header
		request.addHeader("User-Agent", USER_AGENT);

		HttpResponse response = client.execute(request);

		System.out.println("\nSending 'GET' request to URL : " + url);
		System.out.println("Response Code : " +
                       response.getStatusLine().getStatusCode());

		BufferedReader rd = new BufferedReader(
                       new InputStreamReader(response.getEntity().getContent()));

		StringBuffer result = new StringBuffer();
		String line = "";
		while ((line = rd.readLine()) != null) {
			result.append(line);
		}

		System.out.println(result.toString());

	}

	// HTTP POST request
	private void sendPost() throws Exception {

		String url = "URL";

		HttpClient client = new DefaultHttpClient();
		HttpPost post = new HttpPost(url);

		// add header
		post.setHeader("User-Agent", USER_AGENT);

		List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
		urlParameters.add(new BasicNameValuePair("name", "example"));
	

		post.setEntity(new UrlEncodedFormEntity(urlParameters));

		HttpResponse response = client.execute(post);
		System.out.println("\nSending 'POST' request to URL : " + url);
		System.out.println("Post parameters : " + post.getEntity());
		System.out.println("Response Code : " +
                                    response.getStatusLine().getStatusCode());

		BufferedReader rd = new BufferedReader(
                        new InputStreamReader(response.getEntity().getContent()));

		StringBuffer result = new StringBuffer();
		String line = "";
		while ((line = rd.readLine()) != null) {
			result.append(line);
		}

		System.out.println(result.toString());

	}

}