Ruby 使用带有Mechanize的登录表单

我知道在Stackoverflow上也有类似的帖子，但我仍然不知道我的尝试有什么问题

# login to the site 
mech.get(base_URL) do |page|
  l = page.form_with(:action => "/site/login/") do |f|
    username_field = f.field_with(:name => "LoginForm[username]")
    username_field.value = userName
    password_field = f.field_with(:name => "LoginForm[password]")
    password_field.value = password
    f.submit
  end
end

这是我的错误：

rb:18:in `block (2 levels) in <main>': undefined method `field_with' for nil:NilClass (NoMethodError)

rb:18:in`block（2层）in'：nil:NilClass（NoMethodError）的未定义方法'field_with'

这是HTML

<div class="bucketbody">

    <div class="form padding10">
    <form id="login-form" action="/site/login" method="post">
        <div class="row">
            <p class="note float_right">Fields with <span class="required">*</span> are required.</p>
            <label for="LoginForm_username" class="required">Email address <span class="required">*</span></label>              <input class="width_66per" autofocus="" name="LoginForm[username]" id="LoginForm_username" type="text">                         </div>

        <div class="row">
            <label for="LoginForm_password" class="required">Password <span class="required">*</span></label>               <input class="width_66per" name="LoginForm[password]" id="LoginForm_password" type="password">                          </div>

                    <div class="row rememberMe nolabel">
            <span class="field"><input id="ytLoginForm_rememberMe" value="0" name="LoginForm[rememberMe]" type="hidden"><input name="LoginForm[rememberMe]" id="LoginForm_rememberMe" value="1" type="checkbox">                <label for="LoginForm_rememberMe">Remember me on this computer</label>                              </span>
        </div>

        <p class="note"><a href="http://test.XXXXXXXX.com/user/reset">Forgot your password?</a></p>

        <div class="row buttons" style="padding-left: 0px;">
            <input class="pushButton" name="yt0" value="Login" type="submit">           </div>

    </form>     </div><!-- form -->

</div>

带*的字段是必需的

电子邮件地址*
密码*
还记得我在这台电脑上吗

第页

#<Mechanize::Page
 {url #<URI::HTTP:0x225ce70 URL:http://xxxxxx.com/>}
 {meta_refresh}
 {title "xxxxxxxxxxx | xxxxxxxxx"}
 {iframes}
 {frames}
 {links
  #<Mechanize::Page::Link "\r\n                        " "/">
  #<Mechanize::Page::Link "About xxxxxx" "/features">
  #<Mechanize::Page::Link "xxxxx Overview" "/features">
  #<Mechanize::Page::Link "xxxxxxx for Associations" "/associations">
  #<Mechanize::Page::Link "xxxxxx For Education" "/education">
  #<Mechanize::Page::Link "FAQ" "/faq">
  #<Mechanize::Page::Link "About Us" "/aboutus">
  #<Mechanize::Page::Link "About Us" "/aboutus">
  #<Mechanize::Page::Link "News & Events" "/news-events">
  #<Mechanize::Page::Link "Environmental Commitment" "/environment">
  #<Mechanize::Page::Link "Our Team" "/ourteam">
  #<Mechanize::Page::Link "The xxxxxxxxxx" "/xxxxxxxxxx">
  #<Mechanize::Page::Link "Free Trial" "/freetrial">
  #<Mechanize::Page::Link "Contact" "/contacts">
  #<Mechanize::Page::Link "Contact us" "/contacts">
  #<Mechanize::Page::Link
   "xxxxxxxxxx"
   "http://www.xxxxxxxx.com/services/web-services/">
  #<Mechanize::Page::Link
   "inquire@xxxxxxxxx.com"
   "mailto:inquire@xxxxxxxxxxx.com">
  #<Mechanize::Page::Link xxxxxx" "http://www.xxxxxxxxx.com/">
  #<Mechanize::Page::Link
   "Technology Association of Oregon"
   "http://www.techoregon.org/">
  #<Mechanize::Page::Link "" "http://www.terrapass.com/">
  #<Mechanize::Page::Link "" "http://www.arborday.org/">}
 {forms}>

试试这个：

mech.get(base_URL) do |page|
  l = page.form_with(:action => "/site/login") do |f|
    username_field = f.field_with(:name => "LoginForm[username]")
    username_field.value = userName
    password_field = f.field_with(:name => "LoginForm[password]")
    password_field.value = password
  end.submit
end

respond = mech.post('www.mysite.com/site/login', "LoginForm[username]" => userName,    "LoginForm[password]" => password)

---

我在

：action=>“/site/login/”

的末尾删除了

/

，并将

提交链接到块的后面，如中所示。但是我没有运行代码，所以请告诉我它是否有效。
您让它变得比需要的更复杂：

page = mech.get base_URL

form = page.form # page.forms[1], etc.
form['LoginForm[username]'] = userName
form['LoginForm[password]'] = password

l = form.submit form.button

你为什么不直接发送post请求？试试这个：

respond = mech.post('www.mysite.com/site/login', "LoginForm[username]" => userName,    "LoginForm[password]" => password)

如果您知道目标（/site/login）、请求方法（post）和必须发送的参数，请在不影响表单的情况下执行post请求

让我知道它是否有效。
Ruby告诉您
f
是
nil
，因此可能没有找到表单。我们可以看一下表单的HTML吗？我想你应该写
f.submit
而不是
表单。submit
@padde更改了f.submit请检查
页面
，在
l=page.form\u行前面插入
p页
，然后在这里发布输出。好了，如果您需要更多信息，请告诉我。最后一行（
{forms}
）告诉您页面上没有表单。尝试
curl
以检查您是否从Web服务器获得预期的响应（即包含表单）。好的，我真的不明白这一点，当我在IRB中执行此操作时，我看到一个difernet输出，它是否在重定向之后