如何在 aspx 中通过 Beautifulsoup 下载文件？

Question

我想使用漂亮的汤和硒在网站上下载 pdf 文件。

我已经把代码写到这里了，它是不完整的。但是，由于我找不到下载 pdf 文件的链接。

#!/usr/bin/python

from bs4 import BeautifulSoup
from selenium import webdriver
import webbrowser
import os
import requests
import urllib2
import time
import urllib
try:
  options = webdriver.ChromeOptions()
  options.add_argument("--headless")
  options.add_argument('--no-sandbox')
  driver = webdriver.Chrome("/usr/bin/chromedriver", chrome_options=options)
except urllib2.HTTPError as e:
    print(e)
except urllib2.URLError:
    print ("Server down or incorrect domains.")
else:
    def not_relative_uri(href):
          return re.compile('^https://').search(href) is not None

    driver.get("https://xxxxxx")
    # print(driver.page_source.encode('utf-8'))

    my_folder="/home/python/"
    soup_res = BeautifulSoup(driver.page_source.encode('utf-8'), 'html.parser')
    tr = soup_res.find("div", {"id":"pageWrapper"}).find("div", {"class":"EGZDefault-List"}).find("div", {"class":"EGZDefault-List-Info-List"}).find("table", {"class":"gridview"}).find("tbody").find_all('tr')[1:21]

我希望有人可以帮助我。

Answer 1

使用 Selenium，您可以执行以下操作：

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.action_chains import ActionChains
import time

driver = webdriver.Chrome("/usr/bin/chromedriver", chrome_options=options)

wait = WebDriverWait(driver, 20)
actions = ActionChains(driver)

driver.get("https://xxxxxx")

wait.until(EC.visibility_of_element_located((By.CSS_SELECTOR, "table.gridview input[type='image']")))
time.sleep(2)
images = driver.find_elements_by_css_selector("table.gridview input[type='image']")
for image in images:
    actions.move_to_element(image).perform()
    time.sleep(0.5)
    image.click()
    time.sleep(5)