NHtmlUnit无法提交按钮

Question

I'm discovering about NHtmlUnit to build an application web. But when I try it with auto login to yahoo mail. But after I run code. I refresh the login page of Yahoo so nothing changed. Not logged.

Code:

        NHtmlUnit.WebClient driver = new NHtmlUnit.WebClient();

        driver.Options.JavaScriptEnabled = true;
        driver.Options.ThrowExceptionOnScriptError = false;
        driver.Options.ActiveXNative = true;
        driver.Options.CssEnabled = true;

        HtmlPage page = driver.GetHtmlPage("https://login.yahoo.com/config/login?");

        HtmlForm form = page.GetFormByName("login_form");
        HtmlTextInput user = (HtmlTextInput)form.GetInputByName("login");
        HtmlPasswordInput pass = (HtmlPasswordInput)form.GetInputByName("passwd");

        user.SetValueAttribute("my account");
        pass.SetValueAttribute("my pass");

        HtmlSubmitInput submitButton = (HtmlSubmitInput)page.GetElementByName(".save");

        HtmlPage nextpage = (HtmlPage)submitButton.Click();

Please help me why. I write it on .NET MVC 4 C#. Thank you very much.

Answer 1

仅在单行下更新，因为您可能会遇到类强制转换异常

HtmlButton submitButton = (HtmlButton)page.GetElementByName(".save");

Answer 2

The code is completely fine, and should works.

Probably the reason you think it is not, is that you check it by a wrong method! One essential elements which makes a site (ie login.yahoo.com) see you as logged in user, is the cookies it provide to your browser/webdriver when you use login forms, so if you use the login procedure by an instance of NHtmlUnit.Webclient (ie driver ) then you are only logged in inside the driver web client, not inside any other browser or client, even on the same machine.

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