selenium web 驱动程序访问列表框值

Question

我在访问列表框值时遇到了 Selenium Web 驱动程序的问题。

检查图像：

我可以粘贴值并传递我想要选择的列表的类名，基本上我每次都必须选择列表中显示的第一个选项

 1   driver.get('https://my.maerskline.com/schedules/vessel')
 2   button = driver.find_element_by_id("s2id_b-vesselCode")   
 3   button.click()        
 4   button1 = driver.find_element_by_id("s2id_autogen1_search")
 5   button1.send_keys(Vessel_name)        
 6   button3 = driver.find_element_by_id("select2-results-dept-0 select2-result select2-result-selectable")
 7   button3.click()
 8   button2 = driver.find_element_by_id("schedulesByVesselSearchButton")
    button2.click()

第 6 行给出了以下错误

selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element:
{"method":"id","selector":"select2-results-dept-0 select2-result
select2-result-selectable"}   (Session info: chrome=55.0.2883.87)  
(Driver info: chromedriver=2.26.436362 (5476ec6bf7ccbada1734a0cdec7d570bb042aa30),platform=Windows NT 6.1.7601 SP1 x86_64)

知道如何完成这项工作吗？需要更多信息让我知道。谢谢

更新代码

if Vessel_name != "":
        #driver.get('https://my.maerskline.com/vessels?searchTerm={0}'.format(Vessel_name))
        print(Vessel_name)

        driver.get('https://my.maerskline.com/schedules/vessel')
        button = driver.find_element_by_id("s2id_b-vesselCode")   
        button.click()        
        button1 = driver.find_element_by_id("s2id_autogen1_search")
        button1.send_keys(Vessel_name)       
        button3 =driver.find_element_by_css_selector("#select2-results-1>li:nth-child(1)")
        button3.click()
        #button2 = driver.find_element_by_id("schedulesByVesselSearchButton")
        #button2.click()
        try:



        soup = BeautifulSoup(driver.page_source)

Answer 1

您应该通过其类名来定位元素。您提供的图片中的元素没有任何 id。

试试这个 xpath：

//ul[@id='select2-results-1']/li[@‌​class='selec‌​t2-results-dept-0 select2-result select2-result-selectable select2-highlighted']

如果你确定你总是想选择第一个li，你可以通过引用它的索引来使xpath更整洁：

(//ul[@id='select2-results-1']/li)[1]

Answer 2

因为这是带有值的下拉菜单，您应该选择类来识别网络元素

你可以参考下面的链接来解决这个问题：-

Selenium - Python - drop-down menu option value