apache HttpClient访问facebook [英] apache HttpClient to access facebook

问题描述

在以下情况下是否有任何示例，提示和指导?

Any examples, tips, guidance for the following scenario?

我已经使用Apache HttpClient来模拟浏览器通过Java应用程序访问Facebook的功能.为此，我必须提供用户凭据.我已经使用了以下网站中提供的示例.

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.

http://svn.apache.org/viewvc/httpcomponents/oac.hc3x/trunk/src/examples/

但是这些方法都不适用于facebook，以下是我为此目的编写的测试代码.我没有提供所有书面方法，这里仅提供用于登录Facebook帐户的方法.中继感谢您的帮助

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

    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<Cookie> cookies = getCookies();
    if (cookies.isEmpty()) {
        logger.trace("Facebook: None");
    } else {
        for (int i = 0; i < 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 <NameValuePair> nvps = new ArrayList <NameValuePair>();
        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 < 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<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;
}

推荐答案

以下代码基于

The following code, based on that sample, worked for me:

DefaultHttpClient httpclient = new DefaultHttpClient();

HttpGet httpget = new HttpGet("http://www.facebook.com/login.php");

HttpResponse response = httpclient.execute(httpget);
HttpEntity entity = response.getEntity();

System.out.println("Login form get: " + response.getStatusLine());
if (entity != null) {
    entity.consumeContent();
}
System.out.println("Initial set of cookies:");
List<Cookie> cookies = httpclient.getCookieStore().getCookies();
if (cookies.isEmpty()) {
    System.out.println("None");
} else {
    for (int i = 0; i < cookies.size(); i++) {
        System.out.println("- " + cookies.get(i).toString());
    }
}

HttpPost httpost = new HttpPost("http://www.facebook.com/login.php");

List <NameValuePair> nvps = new ArrayList <NameValuePair>();
nvps.add(new BasicNameValuePair("email", "******"));
nvps.add(new BasicNameValuePair("pass", "*******"));

httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

response = httpclient.execute(httpost);
entity = response.getEntity();
System.out.println("Double check we've got right page " + EntityUtils.toString(entity));

System.out.println("Login form get: " + response.getStatusLine());
if (entity != null) {
    entity.consumeContent();
}

System.out.println("Post logon cookies:");
cookies = httpclient.getCookieStore().getCookies();
if (cookies.isEmpty()) {
    System.out.println("None");
} else {
    for (int i = 0; i < cookies.size(); i++) {
        System.out.println("- " + cookies.get(i).toString());
    }
}

httpclient.getConnectionManager().shutdown();  

我不确定您的代码是否正确管理了cookie(并将会话ID保留在其中一个中)，也许就是问题所在.希望对您有帮助.

I am not sure if your code was managing properly cookies (and session id kept within one of them), maybe that was the problem. Hope this will help you.

仅需阐明版本问题:我使用的是HttpClient版本4.X，而不是旧版本(3.X).它们有很大的不同.

Just to make clear version issue: I was using HttpClient version 4.X, not the old one (3.X). They differ significantly.

这篇关于apache HttpClient访问facebook的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！