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 loadWarning: 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。