apache http client sample

TestHttp.java

package http;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
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;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;

public class TestHttp {

	private static HttpClient httpClient = new DefaultHttpClient();

	/**
	 * @param args
	 */
	public static void main(String[] args) {

		TestHttp fixture = new TestHttp();

		try {
			fixture.doGet();
			fixture.doPost();
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	private void doGet() throws ClientProtocolException, IOException {

		/* create the HTTP client and GET request */
		HttpGet httpGet = new HttpGet("http://hc.apache.org/");

		/* execute request */
		HttpResponse httpResponse = httpClient.execute(httpGet);
		HttpEntity httpEntity = httpResponse.getEntity();

		/* process response */
		if (httpResponse.getStatusLine().getStatusCode() == 200) {

			String responseText = EntityUtils.toString(httpEntity);
			
			System.out.println(responseText);

		} else {
			System.err.println("Invalid HTTP response: "
					+ httpResponse.getStatusLine().getStatusCode());
		}

	}

	private void doPost() throws IOException, UnsupportedEncodingException,
			ClientProtocolException {

		/* create the HTTP client and POST request */
		HttpPost httpPost = new HttpPost("http://someUrl/bla");

		String parm1 = "0123456789abcdef0123456789abcdef";

		/* add some request parameters for a form request */
		List<NameValuePair> nvps = new ArrayList<NameValuePair>();
		nvps.add(new BasicNameValuePair("parm1", parm1));
		nvps.add(new BasicNameValuePair("submit", "Submit Query"));
		nvps.add(new BasicNameValuePair("Content-Type",
				"application/x-www-form-urlencoded"));
		httpPost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

		/* execute request */
		HttpResponse httpResponse = httpClient.execute(httpPost);
		HttpEntity httpEntity = httpResponse.getEntity();

		/* process response */
		if (httpResponse.getStatusLine().getStatusCode() == 200) {
			String responseText = EntityUtils.toString(httpEntity);
			System.out.println(responseText);

		} else {
			System.err.println("Invalid HTTP response: "
					+ httpResponse.getStatusLine().getStatusCode());
		}

	}
}