Http post - Getting same website as result

Question

I tryed to write an app that posts a form to a website and then gets the result which will later be used in Jsoup, but everytime the app is run I get the same website back as a result. The website:Link

I used this for an example:Link

I saw somewhere on this site that you have to put an action with the url but this doesn't work either.

Part of my app:

protected String doInBackground(String... params) {

        String url = "http://www.ap-ljubljana.si/vozni_red2/VR1.php";
        HttpPost post = new HttpPost(url);
        List<NameValuePair> parameters = new ArrayList<NameValuePair>();

        parameters.add(new BasicNameValuePair("VSTOP_IME", vhod));
        parameters.add(new BasicNameValuePair("IZSTOP_IME", izhod));

        try {
            UrlEncodedFormEntity entity = new UrlEncodedFormEntity(parameters);
            HttpClient client = new DefaultHttpClient();
            post.setEntity(entity);
            HttpResponse response = client.execute(post);
            html_response = EntityUtils.toString(response.getEntity());

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }


        return null;
    }


}

You use "VSTOP_IME" and "ISTOP_IME". You are aware that there is a third input "DATUM"? Maybe it is mandatory. — greenapps, Jul 02 '14 at 20:18
DATUM in my language means date. If not entered it will take the current date. — Snipex, Jul 02 '14 at 20:19
Of course i knew that it was a date. My only concern was that it would be mandatory. And you omitted it... — greenapps, Jul 02 '14 at 20:29
Oh sorry. For now I just left it blank and it worked. I will add it in the future. — Snipex, Jul 02 '14 at 20:32
Yes :D. I hope I won't get any problems with that (not expecting any). Thanks for all the help. — Snipex, Jul 02 '14 at 20:35
I have a problem posting words that contain characters like 'č','š' and 'ž'. The app chrashes after I call startActivity(Jsoup_result). And also textview doesn't display this characters. It just displays �. I updated the code above. — Snipex, Jul 09 '14 at 16:35

score 0 · Accepted Answer · answered Jul 02 '14 at 20:07

0

Change your url from

  String url = "http://www.ap-ljubljana.si/vozni_red2/VR1.php/";

to

  String url = "http://www.ap-ljubljana.si/vozni_red2/VR2.php";

Remove String action;

Thats all.

The action parameter is there to tell the 'form' to which url to post the data to. If the action parameter is empty or missing then the form will post to the same url as it's page.

answered Jul 02 '14 at 20:07

greenapps

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Why exactly does this work? I mean the form is on the VR1.php page. If I open VR2.php page on browser I get a tottaly different page. – Snipex Jul 02 '14 at 20:16
If you open VR2.php in a normal browser than the method is not POST. It is more a get without parameters. The php script can deliver you anything it wants. Indeed the
is on VR1.php. But your app does not have to call that script as your app (well you) already knows that there is a
with such and such input fields. If you open VR1.php in a normal browser, fill it in and click the button then the browser will post to script VR2.php. That's why your app has to do that too. The script will 'see' that there is a post. Read the name-value pairs and upon that decide which html to make..
– greenapps Jul 02 '14 at 20:23

Http post - Getting same website as result

1 Answers1