Apache HttpClient - Aborting a Request


You can abort the current HTTP request using the abort() method, i.e., after invoking this method, on a particular request, execution of it will be aborted.

If this method is invoked after one execution, responses of that execution will not be affected and the subsequent executions will be aborted.


If you observe the following example, we have created a HttpGet request, printed the request format used using the getMethod().

Then, we have carried out another execution with the same request. Printed the status line using the 1st execution again. Finally, printed the status line of the second execution.

As discussed, the responses of the 1st execution (execution before abort method) are printed (including the second status line that is written after the abort method) and, all the subsequent executions of the current request after the abort method are failed invoking an exception.

import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;

public class HttpGetExample {
   public static void main(String args[]) throws Exception{
      //Creating an HttpClient object
      CloseableHttpClient httpclient = HttpClients.createDefault();

      //Creating an HttpGet object
      HttpGet httpget = new HttpGet("http://www.tutorialspoint.com/");

      //Printing the method used
      //Executing the Get request
      HttpResponse httpresponse = httpclient.execute(httpget);

      //Printing the status line

      //Executing the Get request
      HttpResponse httpresponse2 = httpclient.execute(httpget);


On executing, the above program generates the following output −

On executing, the above program generates the following output.
HTTP/1.1 200 OK
Exception in thread "main" org.apache.http.impl.execchain.RequestAbortedException:
Request aborted
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:180)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
at HttpGetExample.main(HttpGetExample.java:32)