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POapache HttpClient to access facebook
 

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    <p>Any examples, tips, guidance for the following scenario?</p> <p>I have used Apache HttpClient to simulate the functionality of browser to access facebook through java application. to do that first i have to provide user credentials. i have used examples provided in the following web site.</p> <p><a href="http://svn.apache.org/viewvc/httpcomponents/oac.hc3x/trunk/src/examples/" rel="nofollow noreferrer">http://svn.apache.org/viewvc/httpcomponents/oac.hc3x/trunk/src/examples/</a></p> <p>But non of these methods works for facebook, following is the test code i have written for this purpose. i have not provided the all the methods written, only the method used to login to the facebook account is given here. relay appreciate any help</p> <pre class="lang-java prettyprint-override"><code> private static int connectAndLogin(String email, String pass){ logger.trace("Facebook: =========connectAndLogin begin==========="); String httpResponseBody = getMethod("http://www.facebook.com/login.php"); if(httpResponseBody == null){ //Why don't we try again? try { Thread.sleep(1000); } catch (InterruptedException e) { logger.trace(e.getMessage()); } httpResponseBody = getMethod("http://www.facebook.com/login.php"); } logger.trace("Facebook: ========= get login page ResponseBody begin==========="); logger.trace(httpResponseBody); logger.trace("Facebook: +++++++++ get login page ResponseBody end+++++++++"); logger.trace("Facebook: Initial cookies: "); List&lt;Cookie&gt; cookies = getCookies(); if (cookies.isEmpty()) { logger.trace("Facebook: None"); } else { for (int i = 0; i &lt; cookies.size(); i++) { logger.trace("Facebook: - " + cookies.get(i).toString()); } } if(httpResponseBody == null){ logger.warn("Facebook: Warning: Failed to get facebook login page."); } try { HttpPost httpost = new HttpPost("http://www.facebook.com/login.php"); List &lt;NameValuePair&gt; nvps = new ArrayList &lt;NameValuePair&gt;(); nvps.add(new BasicNameValuePair("email", email)); nvps.add(new BasicNameValuePair("pass", pass)); //don't know if is this necessary nvps.add(new BasicNameValuePair("login", "")); httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8)); logger.info("Facebook: @executing post method to:" + "http://www.facebook.com/login.php"); HttpResponse loginPostResponse = getHttpClient().execute(httpost); HttpEntity entity = loginPostResponse.getEntity(); logger.trace("Facebook: Login form post: " + loginPostResponse.getStatusLine()); if (entity != null) { logger.trace("Facebook: "+EntityUtils.toString(entity)); entity.consumeContent(); } else { logger.error("Facebook: Error: login post's response entity is null"); return FacebookErrorCode.kError_Login_GenericError; } logger.trace("Facebook: Post logon cookies:"); cookies = getCookies(); if (cookies.isEmpty()) { logger.trace("Facebook: None"); } else { for (int i = 0; i &lt; cookies.size(); i++) { logger.trace("Facebook: - " + cookies.get(i).toString()); } } int statusCode = loginPostResponse.getStatusLine().getStatusCode(); logger.info("Facebook: Post Method done(" + statusCode + ")"); switch(statusCode){ case 100: break;//we should try again; case 301: case 302: case 303: case 307: { //redirect // Header[] headers = loginPostResponse.getAllHeaders(); // for (int i=0; i&lt;headers.length; i++) { // logger.trace("Facebook: "+headers[i]); // } // Header locationHeader = loginPostResponse.getFirstHeader("location"); // if(locationHeader != null){ // homePageUrl = locationHeader.getValue(); // logger.info("Facebook: Redirect Location: " + homePageUrl); // if(homePageUrl == null // || !homePageUrl.contains("facebook.com/home.php")){ // logger.error("Facebook: Login error! Redirect Location Url not contains \"facebook.com/home.php\""); // return FacebookErrorCode.kError_Login_GenericError; // } // } else { // logger.warn("Facebook: Warning: Got no redirect location."); // } } break; default:; } } catch (IOException ioe) { logger.error("Facebook: IOException\n" + ioe.getMessage()); return FacebookErrorCode.kError_Global_ValidationError; } logger.trace("Facebook: =========connectAndLogin end=========="); return FacebookErrorCode.Error_Global_NoError; } </code></pre>
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