selenium web驱动程序访问列表框值

Question

我在访问列表框值时遇到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，基本上我必须每次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？所需的更多信息让我知道。感谢

更新了代码

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

您应该按类名定位元素。您提供的图片中的元素没有任何ID。

将此xpath设为：

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

如果您确定总是想要选择第一个li，可以通过引用其索引使xpath更整洁：

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

Answer 2

因为这是下拉值，你应该用户选择类来识别web元素

您可以参考以下链接来解决此问题： -

Selenium - Python - drop-down menu option value

Answer 3

您正在呼叫find_element_by_id但是要提供课程名称。您应该使用element_by_css_selector("#select2-results-1 > li:nth-child(2)")作为第二选项。

"#select2-results-1 > li:nth-child(1)" >> MAJESTIC   
"#select2-results-1 > li:nth-child(2)" >> MAJESTC MAERSK   
"#select2-results-1 > li:nth-child(3)" >> NORTHERN MAJESTC    

检查以下

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(2)")
button3.click()
button2 = driver.find_element_by_id("schedulesByVesselSearchButton")
button2.click()

检查此代码的工作原理：

>>> driver.button = driver.find_element_by_id("s2id_b-vesselCode")
>>> 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)
>>> button1.send_keys("majestic")
>>> button3 = driver.find_element_by_css_selector("#select2-results-1 > li:nth-child(2)")
>>> button3.click()
>>> button2 = driver.find_element_by_id("schedulesByVesselSearchButton")
>>> button2.click()
>>> driver.find_element_by_css_selector(".muted.scheduleVesselHeader").text
u'Port Terminal Arrival Voyage Departure'
>>> driver.find_element_by_css_selector("tbody > tr:nth-child(2)").text
u'Rotterdam\nAPM 2 Terminal Maasvlakte II 15 Jan 2017, 06:00 649W | 649W 17 Jan 2017, 05:00'