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POPossible redirect issue while trying to log in to website with HttpClient
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  1. POPossible redirect issue while trying to log in to website with HttpClient
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    copied!<p>I've copied <strong><em>Mkyong's Apache HttpClient</em></strong> example almost word for word except for swapping out the deprecated methods and my own log in information (I even managed to copy his typos!): <a href="http://www.mkyong.com/java/apache-httpclient-examples/" rel="nofollow noreferrer">Mkyong's example</a></p> <pre><code>private void sendPost(String url, List&lt;NameValuePair&gt; postParams) throws Exception { post.setParams(params); post.setHeader("Host", "accounts.google.com"); post.setHeader("User-Agent", USER_AGENT); post.setHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"); post.setHeader("Accept-Language", "en-US,en;q=0.5"); post.setHeader("Cookie", getCookies()); post.setHeader("Connection", "keep-alive"); post.setHeader("Referer", "https://accounts.google.com/ServiceLoginAuth"); post.setHeader("Content-Type", "application/x-www-form-urlencoded"); post.setEntity(new UrlEncodedFormEntity(postParams)); HttpResponse response = client.execute(post); int responseCode = response.getStatusLine().getStatusCode(); System.out.println("\nSending 'POST' request to URL : " + url); System.out.println("Post parameters : " + postParams); System.out.println("Response Code : " + responseCode); BufferedReader rd = new BufferedReader( new InputStreamReader(response.getEntity().getContent())); StringBuffer result = new StringBuffer(); String line = ""; while ((line = rd.readLine()) != null) { result.append(line); } System.out.println(result.toString()); } </code></pre> <p>The print statement at the end of the method returns that the page has been 'moved temporarily'.</p> <p><code>&lt;HTML&gt;&lt;HEAD&gt;&lt;TITLE&gt;Moved Temporarily&lt;/TITLE&gt;&lt;/HEAD&gt;&lt;BODY BGCOLOR="#FFFFFF" TEXT="#000000"&gt;&lt;H1&gt;Moved Temporarily&lt;/H1&gt;The document has moved &lt;A HREF="https://accounts.google.com/CheckCookie?chtml=LoginDoneHtml&amp;amp;continue=https%3A%2F%2Faccounts.google.com%2FManageAccount&amp;amp;gidl=CAA"&gt;here&lt;/A&gt;.&lt;/BODY&gt;&lt;/HTML&gt;</code></p> <p>I believe this is a redirect, though I am not entirely sure. Here is the main method:</p> <pre><code>public static void main(String[] args) throws Exception { String url = "https://accounts.google.com/ServiceLoginAuth"; String gmail = "https://mail.google.com/mail/"; CookieHandler.setDefault(new CookieManager()); HttpCilentExample http = new HttpCilentExample(); String page = http.GetPageContent(url); List&lt;NameValuePair&gt; postParams = http.getFormParams(page, "example@gmail.com","examplePassword"); http.sendPost(url, postParams); System.out.println("past here"); String result = http.GetPageContent(gmail); System.out.println(result); } </code></pre> <p>The code does not process past <code>String result = http.GetPageContent(gmail);</code></p> <p>I believe that this has something to do with the issue (this is from <a href="https://stackoverflow.com/questions/5169468/handling-httpclient-redirects">Handling HttpClient Redirects</a>)</p> <blockquote> <p>10.3.3 302 Found ...</p> <p>If the 302 status code is received in response to a request other<br> than GET or HEAD, the user agent MUST NOT automatically redirect the<br> request unless it can be confirmed by the user, since this might<br> change the conditions under which the request was issued.</p> </blockquote> <p>I have attempted to override the <code>isRedirected()</code> method, but am unsure as to what I am supposed to do. Am I to return false for all cases, or check the parameters for <strong><em>POST</em></strong> cases?</p> <p>I am unsure if this is the entire problem and am unsure if I am approaching this correctly at all.</p> <p>However, I would appreciate any explanations that would help me understand the process of logging into a website using <strong><em>Httpclient</em></strong>.</p>
 

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