HTTP Post Request using Apache Commons

Demonstrates an HTTP Post using the Apache Commons HTTP library.

Required Libraries:

• httpcore-4.1.jar
• commons-io-2.4.jar
• commons-logging-1.1.1.jar
• httpmime-4.1.1.jar
• httpclient-4.1.1.jar

Example Source Code

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

 import org.apache.commons.io.IOUtils;
 import org.apache.http.HttpEntity;
 import org.apache.http.HttpResponse;
 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.HttpPost;
 import org.apache.http.impl.client.DefaultHttpClient;
 import org.apache.http.message.BasicNameValuePair;

 public class ExampleHttpPost
 {
   public static void main(String args[]) throws ClientProtocolException, IOException
   {
     HttpPost httppost = new HttpPost("https://stanfordwho.stanford.edu/SWApp/Search.do");

     List<BasicNameValuePair> parameters = new ArrayList<BasicNameValuePair>();
     parameters.add(new BasicNameValuePair("search", "jsproch"));
     parameters.add(new BasicNameValuePair("filters", "closed"));
     parameters.add(new BasicNameValuePair("affilfilter", "everyone"));
     parameters.add(new BasicNameValuePair("btnG", "Search"));

     httppost.setEntity(new UrlEncodedFormEntity(parameters));

     HttpClient httpclient = new DefaultHttpClient();
     HttpResponse httpResponse = httpclient.execute(httppost);
     HttpEntity resEntity = httpResponse.getEntity();

     // Get the HTTP Status Code
     int statusCode = httpResponse.getStatusLine().getStatusCode();

     // Get the contents of the response
     InputStream input = resEntity.getContent();
     String responseBody = IOUtils.toString(input);
     input.close();

     // Print the response code and message body
     System.out.println("HTTP Status Code: "+statusCode);
     System.out.println(responseBody);
   }
 }