Question

我正在尝试使用BeautifulSoup抓取以下网址： https://www.investopedia.com/markets/stocks/aapl/#Financials

我试图解析我通过检查发现的这一部分：

     <div class="value">
          <div class="marker position" style="left: 89.25%;"></div>
          <div class="text position" style="left: 89.25%;">1.43</div>
     </div>

MyCode如下：

import bs4 as bs
import requests

def load_ticker_invest(ticker):
resp = requests.get('https://www.investopedia.com/markets/stocks/{}/#Financials'.format(ticker))
    soup = bs.BeautifulSoup(resp.text, 'html.parser')
    trend = soup.div.find_all('div', attrs={'class':'value'})

    return trend

print (load_ticker_invest('aapl'))

我得到的结果是一个空白列表：

[]

我该如何解决？

Answer 1

此站点使用内部API获取这些数据，此API调用需要一些令牌，这些令牌已嵌入页面https://www.investopedia.com/markets/stocks/aapl内的某些Javascript脚本中，因此您需要首先使用一些正则表达式抓取这些值，然后再使用它们在API调用中

使用带有curl，sed，tr和jq的bash脚本：

title=aapl

IFS=' ' read token token_userid < <(curl -s "https://www.investopedia.com/markets/stocks/$title/" | \
     tr -d '\n' | \
     sed -rn "s:.*Xignite\(\s*'([A-Z0-9]+)',\s*'([A-Z0-9]+)'.*:\1 \2:p")

curl -s "https://factsetestimates.xignite.com/xFactSetEstimates.json/GetLatestRecommendationSummaries?IdentifierType=Symbol&Identifiers=$title&UpdatedSince=&_token=$token&_token_userid=$token_userid" | \
     jq -r '.[].RecommendationSummarySet | .[].RecommendationScore'

使用python：

import requests
import re

ticker = 'aapl'

r = requests.get('https://www.investopedia.com/markets/stocks/{}/'.format(ticker))

result = re.search(r".*Xignite\(\s*'([A-Z0-9]+)',\s*'([A-Z0-9]+)'", r.text)

token = result.group(1)
token_userid = result.group(2)

r = requests.get('https://factsetestimates.xignite.com/xFactSetEstimates.json/GetLatestRecommendationSummaries?IdentifierType=Symbol&Identifiers={}&UpdatedSince=&_token={}&_token_userid={}'
    .format(ticker, token, token_userid)
)

print(r.json()[0]['RecommendationSummarySet'][0]['RecommendationScore'])

Answer 2

import requests
from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
import bs4 as bs

caps = DesiredCapabilities().CHROME
caps["pageLoadStrategy"] = "normal"
driver = webdriver.Chrome(desired_capabilities=caps)
driver.get('https://www.investopedia.com/markets/stocks/aapl/#Financials')
resp = driver.execute_script('return document.documentElement.outerHTML')
driver.quit()

soup = bs.BeautifulSoup(resp, 'html.parser')
res = soup.find('div', attrs={'class':'text position'}).text
print (res)

网页抓取与beautifulsoup隐藏元素

2 个答案: