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 create dynamic entity through HTTP Client.

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


package com.bethecoder.tutorials.commons_httpclient;



import java.io.IOException;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.io.UnsupportedEncodingException;

import java.io.Writer;



import org.apache.http.HttpEntity;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.HttpClient;

import org.apache.http.client.ResponseHandler;

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

import org.apache.http.entity.ContentProducer;

import org.apache.http.entity.EntityTemplate;

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

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



public class DynamicEntityTest {



  /**

   * @param args

   */

  public static void main(String[] args) {

    HttpClient httpclient = new DefaultHttpClient();

    HttpPost httppost = new HttpPost("http://localhost:8080/HTTP_TEST_APP/print_request_body.jsp");

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



    try {

      ContentProducer contentProducer = new ContentProducer() {

        public void writeTo(OutputStream outstream) throws IOException {

          Writer writer = new OutputStreamWriter(outstream, "UTF-8");

          writer.write("<xml>");

          writer.write("<message>BETHECODER Tutorials</message>");

          writer.write("</xml>");

          writer.flush();

        }

      };

      

      HttpEntity entity = new EntityTemplate(contentProducer);

      httppost.setEntity(entity);



      ResponseHandler<String> responseHandler = new BasicResponseHandler();

      String responseBody = httpclient.execute(httppost, responseHandler);



      System.out.println("responseBody : " + responseBody);



    } catch (UnsupportedEncodingException e) {

      e.printStackTrace();

    } catch (ClientProtocolException e) {

      e.printStackTrace();

    } catch (IOException e) {

      e.printStackTrace();

    } finally {

      httpclient.getConnectionManager().shutdown();

    }

  }



}

How to create Dynamic Entity