Question

我想从网页上获取.ics文件，但我需要登录。我可以使用以下代码登录：

    DefaultHttpClient httpclient = new DefaultHttpClient();

    HttpGet httpget = new HttpGet("http://ipool.ba-berlin.de/stundenplaene.anzeige.php?faculty=15&course=6&type=html");

    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://ipool.ba-berlin.de/main.php?action=login");

    List<NameValuePair> nvps = new ArrayList<NameValuePair>();
    nvps.add(new BasicNameValuePair("FORM_LOGIN_NAME", "MY_USERNAME"));
    nvps.add(new BasicNameValuePair("FORM_LOGIN_PASS", "MY_PASSWORD"));

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

    response = httpclient.execute(httpost);
    entity = response.getEntity();

    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();

但在我登录后，我不知道如何获取我的文件内容。我怎样才能成功呢？

非常感谢！

Answer 1

如果我在登录后了解您的问题，您应该使用您的会话cookie请求资源（文件网址）。

尝试这样的事情

CookieStore cookieStore = new BasicCookieStore(); 
BasicClientCookie cookie = new BasicClientCookie("JSESSIONID", mySessionId);

cookieStore.addCookie(cookie); 
client.setCookieStore(cookieStore);

您已设法登录，因此您应该收到回复的会话Cookie，我在你的代码中看到它，现在你必须向你所在的url发出新的http请求，但是服务器端需要验证你已经登录了，所以它根据你收到的id在session对象中存储了关于你的数据响应为名为JSESSIONID的cookie，您需要将该cookie与新请求一起传递，该示例创建新cookie，您可以直接传递接收的cookie

下载需要登录的网页

1 个答案: