Web scraper software for dynamic pages [duplicate] - html

Question

I am trying to use python3 to return the bibtex citation generated by http://www.doi2bib.org/. The url's are predictable so the script can work out the url without having to interact with the web page. I have tried using selenium, bs4, etc but cant get the text inside the box.
url = "http://www.doi2bib.org/#/doi/10.1007/s00425-007-0544-9"
import urllib.request
from bs4 import BeautifulSoup
text = BeautifulSoup(urllib.request.urlopen(url).read())
print(text)
Can anyone suggest a way of returning the bibtex citation as a string (or whatever) in python?

Answer 1

You don't need BeautifulSoup here. There is an additional XHR request sent to the server to fill out the bibtex citation, simulate it, for example, with requests:
import requests
bibtex_id = '10.1007/s00425-007-0544-9'
url = "http://www.doi2bib.org/#/doi/{id}".format(id=bibtex_id)
xhr_url = 'http://www.doi2bib.org/doi2bib'
with requests.Session() as session:
session.get(url)
response = session.get(xhr_url, params={'id': bibtex_id})
print(response.content)
Prints:
#article{Burgert_2007,
doi = {10.1007/s00425-007-0544-9},
url = {http://dx.doi.org/10.1007/s00425-007-0544-9},
year = 2007,
month = {jun},
publisher = {Springer Science $\mathplus$ Business Media},
volume = {226},
number = {4},
pages = {981--987},
author = {Ingo Burgert and Michaela Eder and Notburga Gierlinger and Peter Fratzl},
title = {Tensile and compressive stresses in tracheids are induced by swelling based on geometrical constraints of the wood cell},
journal = {Planta}
}
You can also solve it with selenium. The key trick here is to use an Explicit Wait to wait for the citation to become visible:
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
driver = webdriver.Firefox()
driver.get('http://www.doi2bib.org/#/doi/10.1007/s00425-007-0544-9')
element = WebDriverWait(driver, 10).until(EC.visibility_of_element_located((By.XPATH, '//pre[#ng-show="bib"]')))
print(element.text)
driver.close()
Prints the same as the above solution.