BeautifulSoup中的一些问题


  使用wkpdftohtml将爬取到的网页生成PDF时,使用示例代码

import requests
from bs4 import BeautifulSoup
import pdfkit
url = http://www.liaoxuefeng.com/wiki/ 
      001434446689867b27157e896e74d51a89c25cc8b43bdb3000
response = requests.get(url)
bsObj = BeautifulSoup(response.content, xml)
body = bsObj.findAll(class_=x-wiki-content)
html = str(body)
html = html.encode(utf-8)
fp = open(test.html, wb)
fp.write(html)
fp.close()
fp = open(test.pdf, wb)
fp.close()
pdfkit.from_file(test.html, test.pdf)
import requests from bs4 import BeautifulSoup import pdfkit url = http://www.liaoxuefeng.com/wiki/ 001434446689867b27157e896e74d51a89c25cc8b43bdb3000 response = requests.get(url) bsObj = BeautifulSoup(response.content, xml) body = bsObj.findAll(class_=x-wiki-content) html = str(body) html = html.encode(utf-8) fp = open(test.html, wb) fp.write(html) fp.close() fp = open(test.pdf, wb) fp.close() pdfkit.from_file(test.html, test.pdf)

  出现警告

Warning: A finished ResourceObject received a loading progress signal. This might be an indication of an iframe taking too long to load
Warning: A finished ResourceObject received a loading progress signal. This might be an indication of an iframe taking too long to load

  并且没有得到预想中的PDF文件。(代码块访问的是廖雪峰的js教程网站)

将beautifulsoup中的解析器换成"lxml"或“html.parser则能够生成预期的PDF文件

  阅读BeautifulSoup的文档


  根据beautifulsoup的文档,不同的解析器之前对文本的解析是存在区别的

使用xml解析器致使生成的dom树与理想的不同(不是bug,是不同解析器的处理机制),以至于停止生成pdf。

  使用wkpdftohtml将爬取到的网页生成PDF时,使用示例代码 import requests from bs4 import BeautifulSoup import pdfkit url = http://www.liaoxuefeng.com/wiki/ 001434446689867b27157e896e74d51a89c25cc8b43bdb3000 response = requests.get(url) bsObj = BeautifulSoup(response.content, xml) body = bsObj.findAll(class_=x-wiki-content) html = str(body) html = html.encode(utf-8) fp = open(test.html, wb) fp.write(html) fp.close() fp = open(test.pdf, wb) fp.close() pdfkit.from_file(test.html, test.pdf)   出现警告 Warning: A finished ResourceObject received a loading progress signal. This might be an indication of an iframe taking too long to load   并且没有得到预想中的PDF文件。(代码块访问的是廖雪峰的js教程网站) 将beautifulsoup中的解析器换成"lxml"或“html.parser则能够生成预期的PDF文件   阅读BeautifulSoup的文档   根据beautifulsoup的文档,不同的解析器之前对文本的解析是存在区别的 使用xml解析器致使生成的dom树与理想的不同(不是bug,是不同解析器的处理机制),以至于停止生成pdf。
经验分享 程序员 微信小程序 职场和发展