我有一个包含表格的页面(表格ID =“ ctl00_ContentPlaceHolder_ctl00_ctl00_GV” class =“ GridListings”),我需要剪贴。我通常为此使用BeautifulSoup和urllib,但是在这种情况下,问题在于该表需要花费一些时间来加载,因此当我尝试使用BS来获取该表时不会捕获该表。由于某些安装问题,我无法使用PyQt4,drysracpe或windmill,因此唯一可能的方法是使用Selenium / PhantomJS我尝试了以下操作,但仍未成功:
from selenium.webdriver.common.by import By from selenium.webdriver.support.wait import WebDriverWait from selenium.webdriver.support import expected_conditions as EC driver = webdriver.PhantomJS() driver.get(url) wait = WebDriverWait(driver, 10) table = wait.until(EC.presence_of_element_located(By.CSS_SELECTOR, 'table#ctl00_ContentPlaceHolder_ctl00_ctl00_GV'))
上面的代码没有给我所需的表内容。我该如何实现这一目标???
您可以使用 request 和 bs4, 来获取数据,几乎(如果不是全部)asp站点总是需要提供一些后置参数,例如 EVENTTARGET , EVENTVALIDATION 等。:
from bs4 import BeautifulSoup import requests data = {"__EVENTTARGET": "ctl00$ContentPlaceHolder$ctl00$ctl00$RadAjaxPanel_GV", "__EVENTARGUMENT": "LISTINGS;0", "ctl00$ContentPlaceHolder$ctl00$ctl00$ctl00$hdnProductID": "139", "ctl00$ContentPlaceHolder$ctl00$ctl00$hdnProductID": "139", "ctl00$ContentPlaceHolder$ctl00$ctl00$drpSortField": "Listing Number", "ctl00$ContentPlaceHolder$ctl00$ctl00$drpSortDirection": "A-Z, Low-High", "__ASYNCPOST": "true"}
对于实际的帖子,我们需要添加一些其他值以发布帖子数据:
post = "https://seahawks.strmarketplace.com/Charter-Seat-Licenses/Charter-Seat-Licenses.aspx" with requests.Session() as s: s.headers.update({"User-Agent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:47.0) Gecko/20100101 Firefox/47.0"}) soup = BeautifulSoup(s.get(post).content) data["__VIEWSTATEGENERATOR"] = soup.select_one("#__VIEWSTATEGENERATOR")["value"] data["__EVENTVALIDATION"] = soup.select_one("#__EVENTVALIDATION")["value"] data["__VIEWSTATE"] = soup.select_one("#__VIEWSTATE")["value"] r = s.post(post, data=data) soup2 = BeautifulSoup(r.content) table = soup2.select_one("div.GridListings") print(table)
运行代码时,您将看到打印的表格。