BE THE CODER > Tools and Libs > Commons Http Client

Commons Http Client is a HTTP agent implementation in java supporting client-side authentication, HTTP state management and HTTP connection management. This requires the libraries httpclient-4.1.2.jar, httpcore-4.1.2.jar, httpmime-4.1.2.jar, httpclient-cache-4.1.2.jar, commons-codec.jar and commons-logging-1.1.1.jar to be in classpath. The following example shows how to read response headers through Commons Http Client.

File Name :	com/bethecoder/tutorials/commons_httpclient/ResponseHeadersTest.java
Author :	Sudhakar KV
Email :	[email protected]


package com.bethecoder.tutorials.commons_httpclient;



import java.io.IOException;



import org.apache.http.Header;

import org.apache.http.HttpResponse;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.HttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.util.EntityUtils;



public class ResponseHeadersTest {



  /**

   * @param args

   */

  public static void main(String[] args) {

    HttpClient httpclient = new DefaultHttpClient();

    HttpGet httpget = new HttpGet("http://finance.google.com/finance/info?client=ig&q=NASDAQ:GOOG");

    System.out.println("Requesting : " + httpget.getURI());



    try {

      

            HttpResponse response = httpclient.execute(httpget);

            Header [] headers = response.getAllHeaders();

            

            for (Header header : headers) {

              System.out.println("--> " + header.getName() + ":" + header.getValue());

            }

            

      System.out.println("\n\nResponse : ");

      if (response.getEntity() != null) {

        System.out.println(EntityUtils.toString(response.getEntity()));

      }

      

    } catch (ClientProtocolException e) {

      e.printStackTrace();

    } catch (IOException e) {

      e.printStackTrace();

    } finally {

       httpclient.getConnectionManager().shutdown();

    }

  }



}

How to read Response Headers