Destroying or Closing HttpClient Android

Question

I have a problem that I think it may relate to the HttpClient. I am logging into a website and grabbing data from it using JSoup. Everything works fine. Here is my issue, when I want to log into a different account, it displays the same data from the other account. Only when I kill the app is when I am able to login with different credentials. I think that my session with the website is still stored in the same HttpClient and won't let me log in again with a different account unless I logout. What would be the best way to fix this problem? Using HttpGet method to execute the logout script? Or is there a way to reset the HttpCLient. Thanks. Code:

public void parseDoc() {
    new Thread(new Runnable() {

        @Override
        public void run() {
            final HttpParams params = new BasicHttpParams();
            HttpClientParams.setRedirecting(params, true);
            httpclient = new DefaultHttpClient();

            HttpPost httppost = new HttpPost(
                    "https://secure.groupfusion.net/processlogin.php");
            String HTML = "";
            try {
                List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(
                        3);
                nameValuePairs
                        .add(new BasicNameValuePair(
                                "referral_page",
                                "/modules/gradebook/ui/gradebook.phtml?type=student_view&jli=t&jli=t&jli=t&jli=t&jli=t&jli=t&printable=FALSE&portrait_or_landscape=portrait"));
                nameValuePairs.add(new BasicNameValuePair("currDomain",
                        "beardenhs.knoxschools.org"));
                nameValuePairs.add(new BasicNameValuePair("username",
                        username.getText().toString()));
                nameValuePairs.add(new BasicNameValuePair("password",
                        password.getText().toString()));
                httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

                HttpResponse response = httpclient.execute(httppost);

                HTML = EntityUtils.toString(response.getEntity());
                Document doc = Jsoup.parse(HTML);
                Element link = doc.select("a").first();
                String linkHref = link.attr("href");
                HttpGet request = new HttpGet();
                try {
                    request.setURI(new URI(linkHref));

                } catch (URISyntaxException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                response = httpclient.execute(request);

                InputStream in = response.getEntity().getContent();
                BufferedReader reader = new BufferedReader(
                        new InputStreamReader(in));
                StringBuilder str = new StringBuilder();
                String line = null;
                while ((line = reader.readLine()) != null) {
                    str.append(line);
                }
                in.close();
                HTML = str.toString();
                doc = Jsoup.parse(HTML);
                Elements divs = doc.getElementsByTag("tbody");
                for (Element d : divs) {
                    if (i == 2) {
                        finishGrades();
                        break;
                    }
                    i++;
                    ggg = d.html();

                }

            } catch (ClientProtocolException e) {
            } catch (IOException e) {
            }

        }
    }).start();

}

Answer 1

I ran into a similar problem, although I am using one instance of the HttpClient for the whole application (Singleton). So in that case, if you use preemptive authentication, you can simply do this for the application-wide client instance (e.g. if the user logs out):

public void logOut() {
  // keep in mind, 'httpClient' is final and set once in the constructor (Singleton)
  httpClient.getCredentialsProvider().clear();
  httpClient.getCookieStore().clear(); // important
}

See also: HttpClient State Management

Answer 2

I would suggest setting "no-cache" header of httpclient to false and try. Not guaranteed solution.

Answer 3

You can call httppost.abort();