html代码:
<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8" />
<title>button dropdown</title>
<script type="text/javascript" async="" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<link href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css" rel="stylesheet" />
<script type="text/javascript">
$(document).ready(
function(){
$('.dropdown-menu').find('a').first().click(function(){ alert('watir-webdriver is better than selenium-webdriver'); });
}
);
</script>
</head>
<body>
<h3>button dropdown</h3>
<div class="row-fluid">
<div class="span3">
<div class="well">
<div class="btn-group">
<a class="btn dropdown-toggle btn-info" data-toggle="dropdown" href="#">
Info
<span class="caret"></span>
</a>
<ul class="dropdown-menu">
<li><a href="#">watir-webdriver</a></li>
<li><a href="#">better than</a></li>
<li><a href="#">selenium-webdriver</a></li>
</ul>
</div>
</div>
</div>
</div>
</body>
<script src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script>
</html>
Python 代码:
#coding=utf-8
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from time import sleep
import os
if 'HTTP_PROXY' in os.environ: del os.environ['HTTP_PROXY']
dr = webdriver.Firefox()
file_path = 'file:///' + os.path.abspath('button_dropdown.html')
dr.get(file_path)
sleep(1)
#
dr.find_element_by_class_name('btn dropdown-toggle btn-info').click()
buttons =dr.find_elements_by_class_name('dropdown-menu')
for btn in buttons:
if btn.text == 'better than': btn.click()
sleep(1)
dr.quit()
错误信息:InvalidSelectorException: Message: u'The given selector btn dropdown-toggle btn-info is either invalid or does not result in a WebElement.
解决办法:
#coding=utf-8
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from time import sleep
import os
if 'HTTP_PROXY' in os.environ: del os.environ['HTTP_PROXY']
dr = webdriver.Firefox()
file_path = 'file:///' + os.path.abspath('button_dropdown.html')
dr.get(file_path)
sleep(1)
#点击下拉菜单
dr.find_element_by_link_text('Info').click()
#找到dropdown-menu父元素
WebDriverWait(dr,10).until(lambda the_driver: the_driver.find_element_by_class_name('dropdown-menu').is_displayed())
#找到better than
menu = dr.find_element_by_class_name('dropdown-menu').find_element_by_link_text('better than')
menu.click()
sleep(3)
dr.quit()