无法以编程方式执行登录

时间：2013-10-28 19:35:56

标签： java swing login netbeans-7 htmlunit

以下是我到目前为止使用HTMLUNIT库所做的事情 - 它实际上是单击按钮时发生的事件：

private void btnTestActionPerformed(java.awt.event.ActionEvent evt) {                                        
        try{
        final WebClient webClient = new WebClient();

    // Get the first page
    final HtmlPage page1 = webClient.getPage("http://cashialize.com/wp-login.php");

    // Get the form that we are dealing with and within that form, 
    // find the submit button and the field that we want to change.
    final HtmlForm form = page1.getFormByName("loginform");

    final HtmlSubmitInput button = form.getInputByName("wp-submit");
    final HtmlTextInput userField = form.getInputByName("user_login");
    final HtmlTextInput passField = form.getInputByName("passField");

    // Change the value of the text field
    userField.setValueAttribute("admin");
    passField.setValueAttribute("blabla");

    // Now submit the form by clicking the button and get back the second page.
    final HtmlPage page2 = button.click();

    webClient.closeAllWindows();
        }catch(IOException e){
        System.out.println(e);
    }

    }

我已经按照他们的指南进行了操作，但对我来说，执行登录似乎有点不可能。我正在使用netbeans 7.4，这是我第一次使用GUI构建器。我通常都在研究eclipse（我仍然无法使用环境），但我确信它更容易。无论如何。我100％肯定我错过了一些非常小的东西，但我现在无法发现它。

这是一个可怕的例外，她对我没有任何意义：

Exception in thread "AWT-EventQueue-0" com.gargoylesoftware.htmlunit.ElementNotFoundException: elementName=[input] attributeName=[name] attributeValue=[user_login]
    at com.gargoylesoftware.htmlunit.html.HtmlForm.getInputByName(HtmlForm.java:463)
    at Main.btnTestActionPerformed(Main.java:95)
    at Main.access$000(Main.java:18)
    at Main$1.actionPerformed(Main.java:44)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
    at java.awt.Component.processMouseEvent(Component.java:6505)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
    at java.awt.Component.processEvent(Component.java:6270)
    at java.awt.Container.processEvent(Container.java:2229)
    at java.awt.Component.dispatchEventImpl(Component.java:4861)
    at java.awt.Container.dispatchEventImpl(Container.java:2287)
    at java.awt.Component.dispatchEvent(Component.java:4687)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
    at java.awt.Container.dispatchEventImpl(Container.java:2273)
    at java.awt.Window.dispatchEventImpl(Window.java:2719)
    at java.awt.Component.dispatchEvent(Component.java:4687)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:694)
    at java.awt.EventQueue$3.run(EventQueue.java:692)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
    at java.awt.EventQueue$4.run(EventQueue.java:708)
    at java.awt.EventQueue$4.run(EventQueue.java:706)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

修改

Mosty Mostacho建议的代码之后的控制台输出

<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US">
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
    <title>
      Cashialize! You can do it! › Log In
    </title>
    <link rel="stylesheet" id="wp-admin-css" href="http://cashialize.com/wp-admin/css/wp-admin.min.css?ver=3.7" type="text/css" media="all"/>
    <link rel="stylesheet" id="buttons-css" href="http://cashialize.com/wp-includes/css/buttons.min.css?ver=3.7" type="text/css" media="all"/>
    <link rel="stylesheet" id="colors-fresh-css" href="http://cashialize.com/wp-admin/css/colors-fresh.min.css?ver=3.7" type="text/css" media="all"/>
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: com.gargoylesoftware.htmlunit.html.HtmlPasswordInput cannot be cast to com.gargoylesoftware.htmlunit.html.HtmlTextInput
    <meta name="robots" content="noindex,nofollow"/>
  </head>
    at Main.btnTestActionPerformed(Main.java:97)
  <body class="login login-action-login wp-core-ui">
    <div id="login">
      <h1>
    at Main.access$000(Main.java:18)
    at Main$1.actionPerformed(Main.java:44)
        <a href="http://wordpress.org/" title="Powered by WordPress">
          Cashialize! You can do it!
        </a>
      </h1>
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
      <form name="loginform" id="loginform" action="http://cashialize.com/wp-login.php" method="post">
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
        <p>
          <label for="user_login">
            Username
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
            <br/>
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
    at java.awt.Component.processMouseEvent(Component.java:6505)
            <input type="text" name="log" id="user_login" class="input" value="" size="20"/>
          </label>
        </p>
        <p>
          <label for="user_pass">
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
            Password
            <br/>
            <input type="password" name="pwd" id="user_pass" class="input" value="" size="20"/>
    at java.awt.Component.processEvent(Component.java:6270)
    at java.awt.Container.processEvent(Container.java:2229)
          </label>
        </p>
    at java.awt.Component.dispatchEventImpl(Component.java:4861)
    at java.awt.Container.dispatchEventImpl(Container.java:2287)
    at java.awt.Component.dispatchEvent(Component.java:4687)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
        <p class="forgetmenot">
          <label for="rememberme">
            <input name="rememberme" type="checkbox" id="rememberme" value="forever"/>
    at java.awt.Container.dispatchEventImpl(Container.java:2273)
    at java.awt.Window.dispatchEventImpl(Window.java:2719)
             Remember Me
          </label>
        </p>
        <p class="submit">
    at java.awt.Component.dispatchEvent(Component.java:4687)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:694)
    at java.awt.EventQueue$3.run(EventQueue.java:692)
    at java.security.AccessController.doPrivileged(Native Method)
          <input type="submit" name="wp-submit" id="wp-submit" class="button button-primary button-large" value="Log In"/>
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
          <input type="hidden" name="redirect_to" value="http://cashialize.com/wp-admin/"/>
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
          <input type="hidden" name="testcookie" value="1"/>
    at java.awt.EventQueue$4.run(EventQueue.java:708)
        </p>
      </form>
      <p id="nav">
    at java.awt.EventQueue$4.run(EventQueue.java:706)
    at java.security.AccessController.doPrivileged(Native Method)
        <a href="http://cashialize.com/wp-login.php?action=lostpassword" title="Password Lost and Found">
          Lost your password?
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
        </a>
      </p>
      <script type="text/javascript">
//<![CDATA[

function wp_attempt_focus(){
setTimeout( function(){ try{
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
d = document.getElementById('user_login');
d.focus();
d.select();
} catch(e){}
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
}, 200);
}

wp_attempt_focus();
if(typeof wpOnload=='function')wpOnload();

//]]>
      </script>
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
      <p id="backtoblog">
        <a href="http://cashialize.com/" title="Are you lost?">
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
          ← Back to Cashialize! You can do it!
        </a>
      </p>
    </div>
    <div class="clear">
    </div>
  </body>
</html>

1 个答案:

答案 0 :(得分：4)

不要害怕，这是一个简单的问题:) HtmlUnit告诉你的例外是这一行：

final HtmlTextInput userField = form.getInputByName("user_login");

你找不到任何东西。换句话说，表单中没有包含name值user_login属性的输入。

我建议您在获取页面代码后立即输出HtmlUnit正在处理的实际代码：

final HtmlPage page1 = webClient.getPage("http://cashialize.com/wp-login.php");
System.out.println(page1.asXml());

您会发现您要查找的元素不在表单中。

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