如何使用Selenium通过列表中的关键字在页面上查找元素？

Question

contact = ['telephone', 'cellphone', 'phone']

q = driver.find_element_by_xpath("//*[contains(@name, 'phone')]")

那么，问题是如何通过使用关键字列表在某些站点的联系人页面上动态地找到所有的文本字段和提交按钮？

Answer 1

正如在注释中所说的那样，通过使用“or”链接xpath查询，可以很容易地完成此操作，其中一种方法是：

# I use lxml to demo the xpath, which should be the same as in selenium
In [7]: from lxml import html

# just a sample
In [8]: s = """<div id="contact-area"> 
   ...:            <form method="post" action="contactengine.php">
   ...:                <label for="Name">Name:</label>
   ...:                <input type="text" name="Name" id="Name" />
   ...:                <label for="City">City:</label>
   ...:                <input type="text" name="City" id="City" />  
   ...:                <label for="Email">Email:</label>
   ...:                <input type="text" name="Email" id="Email" />
   ...:                <label for="Message">Message:</label><br />
   ...:                <textarea name="Message" rows="20" cols="20" id="Message"></textarea>
   ...:                <input type="submit" name="submit" value="Submit" class="submit-button" />
   ...:            </form>
   ...:        <div style="clear: both;"></div>
   ...:    </div>"""

In [9]: tree = html.fromstring(s)

In [10]: contact = ["Name", "Phone", "Message", "Comment"] 

# construct the query with "or" chaining with all keywords 
In [11]: query = " or ".join("contains(@name, '%s')" % field for field in contact)

In [12]: query
Out[12]: "contains(@name, 'Name') or contains(@name, 'Phone') or contains(@name, 'Message') or contains(@name, 'Comment')"

结果：

In [13]: tree.xpath("//*[%s]" % query)
Out[13]: 
[<InputElement 10e34c8e8 name='Name' type='text'>,
 <TextareaElement 10e34c9f0 name='Message'>]

希望这有帮助。