我对使用硒选择下拉值中的一个值有一点疑问。当我使用selenium-IDE生成代码时，它给了我一组代码，用于从下拉列表中进行选择。 代码如下 - ＆gt;
driver.findElement(By.cssSelector("input.search")).click();
driver.findElement(By.xpath("//table[@id='project-add-table']/tbody/tr[4]/td[3]/div/div[2]/div[3]")).click();
new Select(driver.findElement(By.cssSelector("select"))).selectByVisibleText("Test");
那么有人能说出第二行代码的用途吗？点击下拉列表后我们无法直接选择所需的元素？
HTML - ＆gt;
<td class="environmentTd" required="">
<div class="ui fluid search dropdown env selection">
<select>
<option value="SB">Sandbox</option>
<option value="DEV">Development</option>
<option value="QA">Test</option>
<option value="PROD">Production</option>
<option value="PP">Pre Production</option>
<option value="UAT">UAT</option>
<option value="DR">DR</option>
</select>
<i class="dropdown icon"></i><input class="search" autocomplete="off" tabindex="0">
<div class="text">Sandbox</div>
<div class="menu transition hidden" tabindex="-1">
<div class="item active selected" data-value="SB">Sandbox</div>
<div class="item" data-value="DEV">Development</div>
<div class="item" data-value="QA">Test</div>
<div class="item" data-value="PROD">Production</div>
<div class="item" data-value="PP">Pre Production</div>
<div class="item" data-value="UAT">UAT</div>
<div class="item" data-value="DR">DR</div>
</div>
</div>
</td>
答案 0 :(得分：1)
你真的不需要点击下拉列表。你需要找到下拉列表作为WebElement，将其转换为SelectElement并使用它的类方法来选择选项。
我假设，在提供的代码中，您单击下拉列表，然后单击带有选项的已打开字段。但我认为这是很多不必要的行动。除非您有任何脚本，由必须测试的点击触发。
答案 1 :(得分：1)
如果你的选择标签在DOM中不可见，而不点击下拉列表，只需使用第三行
Select select = new Select(driver.findElement(By.cssSelector("select")));
select.selectByValue("QA");
否则，单击下拉列表，该下拉列表可能会生成DIV类
class="menu transition hidden"
然后您可以使用select行。
答案 2 :(得分：-2)
从您的描述中可以看出SELECT元素在第二次点击发生之前是不可见的。第二次点击也可能通过Javascript创建SELECT元素。您可以使用Chrome devtools进行调查，并在第二次点击发生之前搜索{#
/**
* @file
* Default theme implementation to display a single page.
*
* The doctype, html, head and body tags are not in this template. Instead they
* can be found in the html.html.twig template in this directory.
*
* Available variables:
*
* General utility variables:
* - base_path: The base URL path of the Drupal installation. Will usually be
* "/" unless you have installed Drupal in a sub-directory.
* - is_front: A flag indicating if the current page is the front page.
* - logged_in: A flag indicating if the user is registered and signed in.
* - is_admin: A flag indicating if the user has permission to access
* administration pages.
*
* Site identity:
* - front_page: The URL of the front page. Use this instead of base_path when
* linking to the front page. This includes the language domain or prefix.
*
* Navigation:
* - breadcrumb: The breadcrumb trail for the current page.
*
* Page content (in order of occurrence in the default page.html.twig):
* - title_prefix: Additional output populated by modules, intended to be
* displayed in front of the main title tag that appears in the template.
* - title: The page title, for use in the actual content.
* - title_suffix: Additional output populated by modules, intended to be
* displayed after the main title tag that appears in the template.
* - messages: Status and error messages. Should be displayed prominently.
* - tabs: Tabs linking to any sub-pages beneath the current page (e.g., the
* view and edit tabs when displaying a node).
* - action_links: Actions local to the page, such as "Add menu" on the menu
* administration interface.
* - node: Fully loaded node, if there is an automatically-loaded node
* associated with the page and the node ID is the second argument in the
* page's path (e.g. node/12345 and node/12345/revisions, but not
* comment/reply/12345).
*
* Regions:
* - page.header: Items for the header region.
* - page.navigation: Items for the navigation region.
* - page.navigation_collapsible: Items for the navigation (collapsible) region.
* - page.highlighted: Items for the highlighted content region.
* - page.help: Dynamic help text, mostly for admin pages.
* - page.content: The main content of the current page.
* - page.sidebar_first: Items for the first sidebar.
* - page.sidebar_second: Items for the second sidebar.
* - page.footer: Items for the footer region.
*
* @ingroup templates
*
* @see template_preprocess_page()
* @see html.html.twig
*/
#}
<div class="fixed-bg"></div>
<div class="i-large"></div>
<div class="i-medium"></div>
<div class="i-small"></div>
{# Navigation (collapsible first) #}
{% if page.navigation_collapsible_first %}
<div id="navbar-collapse-first" class="navbar-collapse-first collapse width navbar-fixed-top">
{{ page.navigation_collapsible_first }}
</div>
{% endif %}
{% set container = theme.settings.fluid_container ? 'container-fluid' : 'container' %}
{# Navbar #}
{% if page.navigation_menu_first or page.navigation_indicator_first or page.navigation_logo or page.navigation_indicator_second or page.navigation_menu_second or page.navigation_collapsible_first or page.navigation_collapsible_second %}
{% block navbar %}
{%
set navbar_classes = [
'navbar',
theme.settings.navbar_inverse ? 'navbar-inverse' : 'navbar-default',
theme.settings.navbar_position ? 'navbar-' ~ theme.settings.navbar_position|clean_class : container,
]
%}
<header{{ navbar_attributes.addClass(navbar_classes) }} id="navbar" role="banner">
{% if not navbar_attributes.hasClass(container) %}
<div class="{{ container }}">
{% endif %}
<div class="navbar-header">
{{ page.navigation_menu_first }}
{{ page.navigation_notification_first }}
{{ page.navigation_logo }}
{{ page.navigation_menu_second }}
{{ page.navigation_notification_second }}
{# .btn-navbar is used as the toggle for collapsed navbar content #}
</div>
{% if not navbar_attributes.hasClass(container) %}
</div>
{% endif %}
</header>
{% endblock %}
{% endif %}
{# Navigation (collapsible second) #}
{% if page.navigation_collapsible_second %}
<div id="navbar-collapse-second" class="navbar-collapse-second collapse width navbar-fixed-top">
{{ page.navigation_collapsible_second }}
</div>
{% endif %}
{# Main #}
{% block main %}
<div role="main" class="main-container {{ container }} js-quickedit-main-content">
<div class="row">
{# Header #}
{% if page.header %}
{% block header %}
<div class="col-sm-12" role="heading">
{{ page.header }}
</div>
{% endblock %}
{% endif %}
{# Sidebar First #}
{% if page.sidebar_first %}
{% block sidebar_first %}
<aside class="col-md-3" role="complementary">
{{ page.sidebar_first }}
</aside>
{% endblock %}
{% endif %}
{# Content #}
{%
set content_classes = [
page.sidebar_first and page.sidebar_second ? 'col-sm-6',
page.sidebar_first and page.sidebar_second is empty ? 'col-md-9',
page.sidebar_second and page.sidebar_first is empty ? 'col-md-9',
page.sidebar_first is empty and page.sidebar_second is empty ? 'col-sm-12'
]
%}
<section{{ content_attributes.addClass(content_classes) }}>
{# Highlighted #}
{% if page.highlighted %}
{% block highlighted %}
<div class="highlighted">{{ page.highlighted }}</div>
{% endblock %}
{% endif %}
{# Breadcrumbs #}
{% if breadcrumb %}
{% block breadcrumb %}
{{ breadcrumb }}
{% endblock %}
{% endif %}
{# Action Links #}
{% if action_links %}
{% block action_links %}
<ul class="action-links">{{ action_links }}</ul>
{% endblock %}
{% endif %}
{# Help #}
{% if page.help %}
{% block help %}
{{ page.help }}
{% endblock %}
{% endif %}
{# Content #}
{% block content %}
<a id="main-content"></a>
{{ page.content }}
{% endblock %}
</section>
{# Sidebar Second #}
{% if page.sidebar_second %}
{% block sidebar_second %}
<aside class="col-md-3" role="complementary">
{{ page.sidebar_second }}
</aside>
{% endblock %}
{% endif %}
</div>
</div>
{% endblock %}
{% if page.footer %}
{% block footer %}
<footer class="footer {{ container }}" role="contentinfo">
{{ page.footer }}
</footer>
{% endblock %}
{% endif %}
元素。查看它是否存在或可能存在但不可见。然后单击第二个元素，查看HTML如何更改。如果没有访问该网站，那就是我们能提供的解释。这不是我会担心的事情。这就是网站设计的方式。