Java –如何使用HtmlUnit登录网站？

Question

我正在编写一个Java程序来登录学校用来发布成绩的网站。

这是登录表单的网址：https : //ma-andover.myfollett.com/aspen/logon.do

这是登录表单的HTML：

<form name="logonForm" method="post" action="/aspen/logon.do" autocomplete="off"><div><input type="hidden" name="org.apache.struts.taglib.html.TOKEN" value="30883f4c7e25a014d0446b5251aebd9a"></div>
<input type="hidden" id="userEvent" name="userEvent" value="930">
<input type="hidden" id="userParam" name="userParam" value="">
<input type="hidden" id="operationId" name="operationId" value="">
<input type="hidden" id="deploymentId" name="deploymentId" value="ma-andover">
<input type="hidden" id="scrollX" name="scrollX" value="0">
<input type="hidden" id="scrollY" name="scrollY" value="0">
<input type="hidden" id="formFocusField" name="formFocusField" value="username">
<input type="hidden" name="mobile" value="false">
<input type="hidden" name="SSOLoginDone" value="">
<center>
<img src="images/spacer.gif" height="15" width="1">

<script language="JavaScript">
document.forms[0].elements['deploymentId'].value = 'ma-andover';
</script>

<script language="JavaScript">
$(function()
{
$('form').attr('autocomplete', 'off');
var name = $('#username');
var password = $('#password');
name.attr('autocomplete', 'off');
password.attr('autocomplete', 'off');
if (name.val() == '')
{
password.attr('disabled','disabled');
}
});
</script>

<img src="images/spacer.gif" height="30" width="1">
<table border="0" cellpadding="0" cellspacing="0">
<tbody><tr>
<td>
<div id="logonDetailContainer" class="logonDetailContainer">
<table border="0" cellpadding="0" cellspacing="0">

<tbody><tr>
<td>
<label style="text-align: center; margin-bottom: 0px">Andover Public Schools</label>
<img src="images/spacer.gif" height="10" width="1">
<hr class="logonHorizontalRule">
</td>
</tr>

<tr>
<td>
<img src="images/spacer.gif" height="10" width="1">


<input type="text" name="fakeuser" style="display: none">
<input type="password" name="fakepassword" style="display: none">

</td>
</tr>
<tr>
<td class="labelCell">

<label>Login ID</label>
<input type="text" name="username" tabindex="1" value="" onkeypress="$('#password').prop('disabled', false)" id="username" class="logonInput" autocomplete="off">

&nbsp;

</td>
</tr>
<tr>
<td class="labelCell">

<label>Password</label>
<input id="password" type="password" name="password" tabindex="2" value="" class="logonInput" autocomplete="off" disabled="disabled">

<a href="javascript:EmbeddedPopup.popupManager.open('passwordRecovery.do?isSecondary=false&amp;deploymentId=ma-andover', 400, 400, 100)" tabindex="5" style="float: right">
I forgot my password
</a>


</td>
</tr>
<tr>
<td width="1" class="logonTopPadding" style="float: left">
<input type="submit" tabindex="3" value="Log On" class="log-button">
</td>
</tr>

</tbody></table>
</div>
</td>
</tr>
</tbody></table>

</center>
<script>
setTimeout(function(){window.location.reload(true);}, 1800000);
</script>
</form>

我正在尝试使用以下代码登录：

import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlForm;
import com.gargoylesoftware.htmlunit.html.HtmlPage;

public class LoginAttempt {

    public static void main(String[] args) throws Exception {  
            WebClient webClient = new WebClient();

            HtmlPage page = (HtmlPage) webClient.getPage("https://ma-andover.myfollett.com/aspen/logon.do"); 
            HtmlForm form = page.getFormByName("logonForm"); 
            form.getInputByName("username").setValueAttribute("myUsername"); //works fine 
            form.getInputByName("password").setValueAttribute("myPassword"); //does not work 

            page = form.getInputByValue("Log On").click(); //works fine

            System.out.println(page.asText());
    } 

}

该程序将填充用户名框，然后单击“登录”按钮，但不会填充密码框。我可以进行哪些更改以使该程序正常运行？我怀疑密码框的“ type ='password'”属性与问题有关，但是如果我输入错误，请更正我。任何帮助表示赞赏。非常感谢你。

目标页面：https : //ma-andover.myfollett.com/aspen/home.do

这是我的输出，以防万一：

Aspen: Log On

Aspen

    About Aspen
Andover Public Schools
Login ID myUsername  
Password I forgot my password
Log On

Copyright © 2003-2014 Follett School Solutions. All rights reserved.
Follett Corporation Follett Software Company Aspen Terms of Use

You must enter a password.
OK

Answer 1

密码字段将被禁用，直到您在该username字段中键入内容为止。通过在用户名中设置值不会触发管理密码字段启用的事件。

下面的作品

public static void main(String[] args) {
    WebClient webClient = new WebClient();
    try {
        HtmlPage page = (HtmlPage) webClient
                .getPage("https://ma-andover.myfollett.com/aspen/logon.do");
        HtmlForm form = page.getFormByName("logonForm");
        form.getInputByName("username").setValueAttribute("myUsername"); 
        HtmlInput passWordInput = form.getInputByName("password");
        passWordInput.removeAttribute("disabled");
        passWordInput.setValueAttribute("myPassword"); 

        page = form.getInputByValue("Log On").click(); // works fine

        System.out.println(page.asText());
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        webClient.close();
    }
}

输出是

Aspen: Log On

Aspen

    About Aspen
Andover Public Schools
Login ID myUsername  
Password I forgot my password
Log On

Copyright © 2003-2014 Follett School Solutions. All rights reserved.
Follett Corporation Follett Software Company Aspen Terms of Use

Invalid login.  
OK