在抓取前如何使用硒从一个网址选项卡转到另一个网址选项卡? [英] how to use selenium to go from one url tab to another before scraping?

问题描述

我创建了以下代码，希望通过几个参数打开一个新选项卡，然后抓取新选项卡上的数据表.

I have created the following code in hopes to open up a new tab with a few parameters and then scrape the data table that is on the new tab.

#Open Webpage
url = "https://www.website.com"
driver=webdriver.Chrome(executable_path=r"C:\mypathto\chromedriver.exe")
driver.get(url)

#Click Necessary Parameters
driver.find_element_by_partial_link_text('Output').click()
driver.find_element_by_xpath('//*[@id="flexOpt"]/table/tbody/tr/td[2]/input[3]').click()
driver.find_element_by_xpath('//*[@id="flexOpt"]/table/tbody/tr/td[2]/input[4]').click()
driver.find_element_by_xpath('//*[@id="repOpt"]/table[2]/tbody/tr/td[2]/input[4]').click()
time.sleep(2)

driver.find_element_by_partial_link_text('Dates').click()
driver.find_element_by_xpath('//*[@id="RangeOption"]').click()
driver.find_element_by_xpath('//*[@id="Range"]/table/tbody/tr[1]/td[2]/select/option[2]').click()
driver.find_element_by_xpath('//*[@id="Range"]/table/tbody/tr[1]/td[3]/select/option[1]').click()
driver.find_element_by_xpath('//*[@id="Range"]/table/tbody/tr[1]/td[4]/select/option[1]').click()
driver.find_element_by_xpath('//*[@id="Range"]/table/tbody/tr[2]/td[2]/select/option[2]').click()
driver.find_element_by_xpath('//*[@id="Range"]/table/tbody/tr[2]/td[3]/select/option[31]').click()
driver.find_element_by_xpath('//*[@id="Range"]/table/tbody/tr[2]/td[4]/select/option[1]').click()
time.sleep(2)

driver.find_element_by_partial_link_text('Groupings').click()
driver.find_element_by_xpath('//*[@id="availFld_DATE"]/a/img').click()
driver.find_element_by_xpath('//*[@id="availFld_LOCID"]/a/img').click()
driver.find_element_by_xpath('//*[@id="availFld_STATE"]/a/img').click()
driver.find_element_by_xpath('//*[@id="availFld_DDSO_SA"]/a/img').click()
driver.find_element_by_xpath('//*[@id="availFld_CLASS_ID"]/a/img').click()
driver.find_element_by_xpath('//*[@id="availFld_REGION"]/a/img').click()
time.sleep(2)

driver.find_element_by_partial_link_text('Run').click()
time.sleep(2)

df_url = driver.switch_to_window(driver.window_handles[0])
page = requests.get(df_url).text
soup = BeautifulSoup(page, features = 'html5lib')
soup.prettify()

但是，当我运行它时，会弹出以下错误消息.

However, the following error pops up when I run it.

requests.exceptions.MissingSchema: Invalid URL 'None': No schema supplied. Perhaps you meant http://None?

我会说，无论使用什么参数，新选项卡始终生成相同的url.换句话说，如果新选项卡创建了www.website.com/b，则无论更改参数如何，它也会在第三，第四等时间创建www.website.com/b.有什么想法吗?

I will say that regardless of the parameters, the new tab always generates the same url. In other words, if the new tab creates www.website.com/b, it also creates www.website.com/b the third, fourth, etc. time, regardless of changing the parameters. Any thoughts?

推荐答案

问题出在这里:

df_url = driver.switch_to_window(driver.window_handles[0])
page = requests.get(df_url).text

df_url 未引用页面的网址.为此，您应该在切换窗口后调用 driver.current_url 以获得活动窗口的URL.

df_url is not referring to the url of the page. To get that, you should call driver.current_url after switching windows to get the url of the active window.

其他一些指针:

• 通过xpath查找元素效率相对较低(

• finding elements by xpath is relatively inefficient (source)
• instead of time.sleep, you can look into using explicit waits

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