如何从像彭博社这样的安全网站提取数据

Question

我正在尝试在此 url 上抓取项目：

"https://www.bloomberg.com/news/articles/2019-05-30/tesla-dealt-another-blow-as-barclays-sees-it-as-niche-carmaker"

我只想获得标题和发布日期，你可以给我的任何示例代码甚至飞溅等

到目前为止我试过的是这个

 def parse(self, response):
   yield scrapy.Request('https://www.bloomberg.com/news/articles/2019-05-30/tesla-dealt-another-blow-as-barclays-sees-it-as-niche-carmaker -H x-crawlera-use-https:1',
        headers={'X-Crawlera-Session': create,
        'X-Crawlera-Timeout': 40000,
        'X-Crawlera-Max-Retries': 5,
        'X-Crawlera-Cookies': disable,
        'X-Crawlera-Session': self.session_id
        },
        callback=self.parse_sub,
        )

 def parse_sub(self, response):
    response.xpath("//h1[@class = 'lede-text-v2__hed']").extract_first()
    response.xpath("//meta[@property = 'og:title']/@content").extract_first()
    response.xpath("//time[@class = 'article-timestamp']/@datetime").extract_first()
   print(response.text)

我也在用爬虫，但它一直检测我是机器人

Answer 1

仅使用 selenium 提取标题即 Tesla 在巴克莱称其为“小众汽车制造商”时再次受到打击以及 发布日期 即 2019 年 5 月 30 日，5:26 下午 GMT+5:30 你必须诱导 WebDriverWait for the visibility_of_element_located() 你可以使用以下解决方案：

代码块

from selenium import webdriver

driver = webdriver.Firefox(executable_path=r'C:\Utility\BrowserDrivers\geckodriver.exe')
driver.get('https://www.bloomberg.com/news/articles/2019-05-30/tesla-dealt-another-blow-as-barclays-sees-it-as-niche-carmaker')
print(WebDriverWait(driver, 10).until(EC.visibility_of_element_located((By.XPATH, "//div[text()='markets']//following:: h1[1]"))).get_attribute("innerHTML"))
print(WebDriverWait(driver, 10).until(EC.visibility_of_element_located((By.XPATH, "//div[text()='markets']//following:: h1[1]//following::div[@class='lede-text-v2__times']/time[@itemprop='datePublished']"))).get_attribute("innerHTML"))
driver.quit()

控制台输出：

Tesla Dealt Another Blow When Barclays Calls It a ‘Niche Carmaker’
May 30, 2019, 5:26 PM GMT+5:30

注意：您必须添加以下导入：

from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC

如何从像彭博社这样的安全网站提取数据

How to extract data from a secure website like bloomberg

python

selenium

scrapy

bloomberg

scrapy-splash