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Message-ID: <1347912610.2493.14.camel@ubuntu>
Subject: Re: 4.2.1 - 302 Redirect
From: Oleg Kalnichevski <olegk@apache.org>
To: HttpClient User Discussion <httpclient-users@hc.apache.org>
Date: Mon, 17 Sep 2012 22:10:10 +0200
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On Mon, 2012-09-17 at 15:39 +0200, Gerd Schmidt wrote:
> Hi,
> 
> I want to get the body from a page, which is redirected from a https adress.
> 
> I'm using Version 4.2.1 and Eclipse Java EE IDE for Web Developers 
> Version: Indigo Service Release 2
> 
> I read the tutorials and this is my code:
> 
>      public final static void main(String[] args) throws Exception {
> 
>          HttpClient httpclient = new DefaultHttpClient();
> 
>          try {
> 
>              HttpPost httpost = new HttpPost("https://xxx.xx");
> 
>              List <NameValuePair> nvps = new ArrayList <NameValuePair>();
>              nvps.add(new BasicNameValuePair("login", "abc"));
>              nvps.add(new BasicNameValuePair("password", "abc"));
> 
>              httpost.setEntity(new UrlEncodedFormEntity(nvps, 
> Consts.UTF_8));
> 
>              HttpResponse response = httpclient.execute(httpost);
> 
>              HttpEntity entity = response.getEntity();
>              System.out.println("Login form get: " + 
> response.getStatusLine());
>              EntityUtils.consume(entity);
> 
>          } finally {
>              httpclient.getConnectionManager().shutdown();
>          }
>      }
> 
> It works, I get a "HTTP/1.1 302 Moved Temporarily", so I checked the 
> HEADER for the redirectLocation.
> 
>              String redirectLocation = null;
>              Header locationHeader = response.getFirstHeader("location");
>              if (locationHeader != null) {
>                  redirectLocation = locationHeader.getValue();
>              }
> 
> This works too, I got the new adress. My Problem is, I want to get the 
> body of the redirected location (while I'm logged in).
> So i tried:
> 
>              HttpGet httpget = new HttpGet(redirectLocation);
>              ResponseHandler<String> responseHandler = new 
> BasicResponseHandler();
>              String responseBody = httpclient.execute(httpget, 
> responseHandler);
>              System.out.println(responseBody);
> 
> But this is not the page, with the updated content i wanted. Furthermore 
> I read, I have to set a "RedirectStrategy", so i tried
> putting
> 
> ((AbstractHttpClient) httpclient).setRedirectStrategy(new 
> LaxRedirectStrategy());
> 
> after HttpClient httpclient = new DefaultHttpClient(); still no change.
> (Anyway, why is httpclient.setRedirectStrategy(new 
> LaxRedirectStrategy());  not working?)
> 
> So, my Question is, "How do i handle a 302 redirect an get the 
> redirected body".
> 
> Thank you
> Gerd Schmidt
> 

Gerd,

You basically have two options: either implement a custom
RedirectStrategy (LaxRedirectStrategy is not going to help here as it is
intended for a completely different case) or disable automatic redirects
and handle all redirect status codes manually.

Oleg



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