在成功编写了一些代码与使用mechanize在笔记本电脑上托管的小型网站进行交互后，我刚刚开始修改watir。但我正在努力争取工作。
require 'watir-webdriver'
b = Watir::Browser.new :firefox
b.goto('https://dev.mitdev.org.uk/login')
body = b.body
body.forms.each do |f|
p f.name
f.text_field(:name, 'IDToken1').wait_until_present(5).set('test')
end
我发现打印f.name有效，我发现登录表单名为“Login”。但是，如果我添加该行来设置文本，我会暂停。
看着FF，我可以看到表格已经呈现，所以我很困惑为什么我似乎无法与它互动。
我尝试了其他设置值的方法，如：
body.text_field(:name => 'IDToken2').wait_until_present(5).set('Password')
但无济于事。
在线教程使这看起来如此简单，我怀疑我只是在犯一个新手的错误，而且太累了，无法看到它。
感谢您的回复。至于异常，我看到它没有呈现，除非我放入等待和超时，如果我这样做。如果有办法强迫它告诉我我的语法错误，我会很高兴知道如何做到这一点。
以下是表格：
<form id="Login" name="Login" action="/login" method="post">
<div class="sign-in">
<fieldset>
<legend class="form-title heading-large">Sign in</legend>
<div class="form-group">
<label class="form-label" for="IDToken1">
User ID
</label>
<input class="form-control" type="text" name="IDToken1" id="IDToken1" value="" maxlength="50" tabindex="1" />
</div>
<div class="form-group">
<label class="form-label" for="IDToken2">
Password
</label>
<input type="hidden" id="goto" name="goto" value=""/>
<input class="form-control" type="password" name="IDToken2" id="IDToken2" value="" maxlength="100" autocomplete="off" tabindex="2" />
<input type="hidden" name="_csrf_token" value=" deleted ">
</div>
</fieldset>
<nav class="module-content-navigation">
<input name="Login.Submit" type="submit" class="button" value="Sign in" tabindex="3" />
<ul class="content-navigation__secondary">
<li>
<a href="/forgotten-password" tabindex="4">Forgotten password</a>
</li>
</ul>
</nav>
</div>
<input name="IDButton" type="hidden" style="display: none;">
</form>
我在网上发现了一个很好的教程，它向我展示了如何使用哈希来进一步限定元素的地址，但我仍然对这种形式没有运气：
b = Watir::Browser.new
b.goto('https://dev.mitdev.org.uk/login')
b.wait(3)
b.text_field(:class => 'form-control',
:type => 'text',
:name => 'IDToken1',
:id => 'IDToken1').set('test')
我仍然会因超时或没有等待而获得异常：
[remote server] file:///var/folders/f4/6vwp2t_d75v803226gs84v100000gp/T/webdriver-profile20160612-12708-sjjxdp/extensions/fxdriver@googlecode.com/components/command-processor.js:10092:in `fxdriver.preconditions.visible': Element is not currently visible and so may not be interacted with (Selenium::WebDriver::Error::ElementNotVisibleError)
from [remote server] file:///var/folders/f4/6vwp2t_d75v803226gs84v100000gp/T/webdriver-profile20160612-12708-sjjxdp/extensions/fxdriver@googlecode.com/components/command-processor.js:12644:in `DelayedCommand.prototype.checkPreconditions_'
from [remote server] file:///var/folders/f4/6vwp2t_d75v803226gs84v100000gp/T/webdriver-profile20160612-12708-sjjxdp/extensions/fxdriver@googlecode.com/components/command-processor.js:12661:in `DelayedCommand.prototype.executeInternal_/h'
from [remote server] file:///var/folders/f4/6vwp2t_d75v803226gs84v100000gp/T/webdriver-profile20160612-12708-sjjxdp/extensions/fxdriver@googlecode.com/components/command-processor.js:12666:in `DelayedCommand.prototype.executeInternal_'
from [remote server] file:///var/folders/f4/6vwp2t_d75v803226gs84v100000gp/T/webdriver-profile20160612-12708-sjjxdp/extensions/fxdriver@googlecode.com/components/command-processor.js:12608:in `DelayedCommand.prototype.execute/<'
稍微归零，这将打印文本字段的id：
p b.text_field(:type => 'text',
:name => 'IDToken1',
:id => 'IDToken1').id
但是无法设置文字：
b.text_field(:type => 'text',
:name => 'IDToken1',
:id => 'IDToken1').when_present(5).set('test')
这看起来越来越像是与页面有关而不是我对水语法的掌握：
p b.text_field(:name => /Token1/).name
p b.text_field(:type => 'text',
:name => 'IDToken1',
:id => 'IDToken1').id
p b.text_field(:name => /Token1/).exists?
b.text_field(:name => /Token1/).double_click
b.text_field(:name => /Token1/).set 'test'
给我这个输出，显示元素显然存在，但我看到这个奇怪的“滚动”堆栈跟踪双击。
"IDToken1"
"IDToken1"
true
[remote server] file:///var/folders/f4/6vwp2t_d75v803226gs84v100000gp/T/webdriver-profile20160612-2812-w3soqr/extensions/fxdriver@googlecode.com/components/driver-component.js:11072:in `FirefoxDriver.prototype.mouseMoveTo': Offset within element cannot be scrolled into view: (5, 17.5): [object HTMLInputElement] (Selenium::WebDriver::Error::MoveTargetOutOfBoundsError)
from [remote server] file:///var/folders/f4/6vwp2t_d75v803226gs84v100000gp/T/webdriver-profile20160612-2812-w3soqr/extensions/fxdriver@googlecode.com/components/command-processor.js:12661:in `DelayedCommand.prototype.executeInternal_/h'
from [remote server] file:///var/folders/f4/6vwp2t_d75v803226gs84v100000gp/T/webdriver-profile20160612-2812-w3soqr/extensions/fxdriver@googlecode.com/components/command-processor.js:12666:in `DelayedCommand.prototype.executeInternal_'
from [remote server] file:///var/folders/f4/6vwp2t_d75v803226gs84v100000gp/T/webdriver-profile20160612-2812-w3soqr/extensions/fxdriver@googlecode.com/components/command-processor.js:12608:in `DelayedCommand.prototype.execute/<'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/remote/response.rb:70:in `assert_ok'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/remote/response.rb:34:in `initialize'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/remote/http/common.rb:78:in `new'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/remote/http/common.rb:78:in `create_response'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/remote/http/default.rb:90:in `request'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/remote/http/common.rb:59:in `call'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/remote/bridge.rb:649:in `raw_execute'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/remote/bridge.rb:627:in `execute'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/remote/bridge.rb:419:in `mouseMoveTo'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/common/mouse.rb:71:in `move_to'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/common/mouse.rb:81:in `move_if_needed'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/common/mouse.rb:40:in `double_click'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/common/action_builder.rb:363:in `block in perform'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/common/action_builder.rb:362:in `each'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/common/action_builder.rb:362:in `perform'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/watir-webdriver-0.9.1/lib/watir-webdriver/elements/element.rb:147:in `block in double_click'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/watir-webdriver-0.9.1/lib/watir-webdriver/elements/element.rb:598:in `element_call'
from /Users/atkinsb/.rvm/gems/ruby-2.2.1/gems/watir-webdriver-0.9.1/lib/watir-webdriver/elements/element.rb:147:in `double_click'
感觉我越来越接近问题了：
p b.text_field(:name => /Token1/).exists?
p b.text_field(:id => /Token1/).visible?
p b.text_field(:name => /Token1/).present?
这显示虚假的可见和现在，但真实存在。
为什么这个元素对我来说是不可见的，而对我来说是我必须回答的下一个问题......
答案 0 :(得分：1)
我试过你的剧本。它在我的工作结束
require 'watir-webdriver'
b = Watir::Browser.new :chrome
b.goto 'file:///D:/WORKSPACE/Learning/demo1.html'
b.text_field(:name, 'IDToken1').when_present(5).set('test')
但不是形式和身体。
答案 1 :(得分：0)
呜！最后...
所以Selenium java代码给了我正确的方向，我设法填写了这样的表格：
b.element(:xpath => "//*[contains(@id,'_tid1')]").send_keys('user')
b.element(:xpath => "//*[contains(@id,'_tid2')]").send_keys('password')
b.element(:name => "Login.Submit").click
答案 2 :(得分：0)
p b.text_field(:name => /Token1/).exists?
p b.text_field(:id => /Token1/).visible?
这两行帮助了我。谢谢。