使用 Java 和 apache HttpClient 4.5.1 进行身份验证

Question

我的问题是，我不明白如何使用 Java 和 Apache HttpComponents (HttpClient v4.5.1) 登录到特定站点： Site im trying to log in。我有用户名 (test_admin) 和密码 (testing) 来登录，但我认为这还不够，我还需要更多的东西。我认为这与我在向 uri 发出获取请求时看到的 security_token 字段有关，但我不知道如何保留它或如何保存它以及之后如何处理它。还有一个名为 login-ticket 的隐藏输入字段，但我不知道那是什么。我想登录，因为我需要查看课程并添加一些新课程。在尝试了几种代码实现后，我坚持使用此代码：

    public static void setGet(CloseableHttpClient httpClient) throws UnsupportedOperationException, IOException
{
    HttpGet httpGet = new HttpGet("http://demo.studip.de/dispatch.php/admin/courses");
    CloseableHttpResponse httpResponse = httpClient.execute(httpGet);

    System.out.println("GET Response Status:: "
            + httpResponse.getStatusLine().getStatusCode());

    showEntity(httpResponse,httpResponse.getEntity());

}


public static HttpEntity setParam(int count, String[] params, String[] values)
{
    List<NameValuePair> formparams = new ArrayList<NameValuePair>();

    for (int i = 0; i < count; i++)
    {
        formparams.add(new BasicNameValuePair(params[i],values[i]));
        System.out.println("Paramater------------------> "+params[i]+"   Values-------------> "+values[i]);
    }   
    UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, Consts.UTF_8);
    return entity;

}

public static void setPost(HttpClient httpC) throws ClientProtocolException, IOException
{
    HttpPost httppost = new HttpPost("http://demo.studip.de/dispatch.php/admin/courses");

    //String[] params = {"loginname", "password"};
    //String[] values = {"test_admin", "testing"};
    //HttpEntity entity = setParam(2, params, values );

    HttpResponse response = httpC.execute(httppost);
    System.out.println("POST Response Status:: "
            + response.getStatusLine().getStatusCode());
    showEntity(response, response.getEntity());

}


public static void showEntity(HttpResponse httpResp, HttpEntity httpClient) throws IOException
{

        httpClient = httpResp.getEntity();
        if (httpClient != null) 
            httpClient = new BufferedHttpEntity(httpClient);

         System.out.print(EntityUtils.toString(httpClient));
}




 public static void main(String[] args) throws InterruptedException, IOException {

     CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
     credentialsProvider.setCredentials(AuthScope.ANY, 
             new UsernamePasswordCredentials("test_admin", "testing"));
     CloseableHttpClient hc = 
     HttpClientBuilder.create().setDefaultCredentialsProvider(credentialsProvider).build();

     setGet(hc);
    // HttpClient httpclient = HttpClients.createDefault();
     setPost(hc);
     setGet(hc);

    }

现在的问题是我每次从服务器得到相同的答案时，我只在响应中看到登录页面，服务器要求我使用用户名和密码登录。

Answer 1

您从服务器 401,403,301,302 或 200 获得哪个代码？