Question

我的问题与this page的问题非常相似，只是我无法访问远程服务器，也不知道它是如何进行身份验证的。

我正在尝试维护我可以使用webclient.getPage（）请求的网页的登录状态。我正在访问的网站使用带有用户名，密码对的标准登录表单。我以前做过的是为我创建一个小功能：

public static HtmlPage logIn(HtmlPage page) {
    HtmlPage nextpage = null;
    final HtmlForm form = page.getFormByName("login_form");
    final HtmlSubmitInput button = form.getInputByValue("Login");
    final HtmlTextInput username = form.getInputByName("username");
    final HtmlPasswordInput password = form.getInputByName("password");
    username.setValueAttribute("user_foo");
    password.setValueAttribute("pwd_bar");      

    // hit submit button and return the requested page
    try {
        nextpage = button.click();
    } catch (IOException e) {
        e.printStackTrace();
    }
        return nextpage;
}

这个问题是我必须手动搜索此函数返回的页面才能找到我想要的页面的链接。更令人不安的是，这仅适用于登录后的页面，但不适用于其他页面。

相反，我想在浏览器模拟器“webclient”中保存登录信息，以便我可以无缝访问站点内的任何受保护页面。除了尝试上一个问题（上面链接）中的解决方案之外，我还尝试了以下解决方案，但没有成功：

private static void setCredentials(WebClient webClient) {
    String username = "user_foo";
    String password = "pwd_bar";
    DefaultCredentialsProvider creds = (DefaultCredentialsProvider) webClient.getCredentialsProvider();//new DefaultCredentialsProvider();
    try {
        creds.addCredentials(username, password);
    webClient.setCredentialsProvider(creds);
    }
    catch (Exception e){
        System.out.println("!!! Problem login in");
        e.printStackTrace();            
}

编辑：这是显示我如何使用webClient的主要功能：

public static void main（String [] args）抛出异常{

    // Create and initialize WebClient object
    WebClient webClient = new WebClient(/*BrowserVersion.CHROME_16*/);
    webClient.setThrowExceptionOnScriptError(false);
    webClient.setJavaScriptEnabled(false);
    webClient.setCssEnabled(false);
    webClient.getCookieManager().setCookiesEnabled(true);
    setCredentials(webClient);

    HtmlPage subj_page = null;
    //visit login page and get it
    String url = "http://www.website.com/index.php";
    HtmlPage page = (HtmlPage) webClient.getPage(url);
    HtmlAnchor anchor = null;
    page = logIn(page);

    // search for content
    page = searchPage(page, "recent articles");     

    // click on the paper link      
    anchor = (HtmlAnchor) page.getAnchorByText("recent articles");
    page = (HtmlPage) anchor.click();

    // loop through found articles
    //{{{page
    int curr_pg = 1;
    int last_pg = 5;        
    page = webClient.getPage(<starting URL of the first article>); // such URLs look like: "www.website.com/view_articles.php?publication_id=17&page=1"
    do {
        // find sections on this page; 
        List <HtmlDivision> sections = new ArrayList<HtmlDivision>();
        List <HtmlDivision> artdivs = new ArrayList<HtmlDivision>();
        List <HtmlDivision> tagdivs = new ArrayList<HtmlDivision>();
        sections = (List<HtmlDivision>) page.getByXPath("//div[@class='article_section']");
        artdivs = (List<HtmlDivision>) page.getByXPath("//div[@class='article_head']");
        tagdivs = (List<HtmlDivision>) page.getByXPath("//div[@class='article_tag']");          

        int num_ques = sections.size();
        HtmlDivision section, artdiv, tagdiv;

        // for every section, get its sub-articles
        for (int i = 0; i < num_ques; i++) {
            section = sections.get(i);
            artdiv = artdivs.get(i);
            tagdiv = tagdivs.get(i);

            // find the sub-article details and print to xml file
            String xml = getXMLArticle(artdiv, section.asText(), tagdiv);
            System.out.println(xml);
            System.out.println("-----------------------------");
        }
        //remove IllegalMonitorStateException *
        synchronized (webClient) { 
            webClient.wait(2000); // wait for 2 seconds             
        }

        String href = "?publication_id=17&page=" + curr_pg;
        anchor = page.getAnchorByHref(href);            
        page = anchor.click();
        System.out.println("anchor val: " + anchor.getHrefAttribute());
        curr_pg++;
    } while (curr_pg < last_pg);
    //}}}page

    webClient.closeAllWindows();
}

其他信息：我没有关于远程站点服务器的身份验证机制的信息，因为我无法访问它，但您的帮助会很棒。谢谢！

在HTMLunit WebClient中跨页面维护登录凭据

0 个答案: