本文实例为大家分享了python爬取网页内容转换为PDF的具体代码，供大家参考，具体内容如下
将廖雪峰的学习教程转换成PDF文件，代码只适合该网站，如果需要其他网站的教程，可靠需要进行稍微的修改。
# coding=utf-8 import os import re import time import pdfkit import requests from bs4 import BeautifulSoup from PyPDF2 import PdfFileMergerimport sysreload(sys)sys.setdefaultencoding('utf8')html_template = """ <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> </head> <body> {content} </body> </html> """ #----------------------------------------------------------------------def parse_url_to_html(url, name): """ 解析URL，返回HTML内容 :param url:解析的url :param name: 保存的html文件名 :return: html """ try: response = requests.get(url) soup = BeautifulSoup(response.content, 'html.parser') # 正文 body = soup.find_all(class_="x-wiki-content")[0] # 标题 title = soup.find('h4').get_text() # 标题加入到正文的最前面，居中显示 center_tag = soup.new_tag("center") title_tag = soup.new_tag('h1') title_tag.string = title center_tag.insert(1, title_tag) body.insert(1, center_tag) html = str(body) # body中的img标签的src相对路径的改成绝对路径 pattern = "(<img .*?src=/")(.*?)(/")" def func(m): if not m.group(3).startswith("http"): rtn = m.group(1) + "http://www.liaoxuefeng.com" + m.group(2) + m.group(3) return rtn else: return m.group(1)+m.group(2)+m.group(3) html = re.compile(pattern).sub(func, html) html = html_template.format(content=html) html = html.encode("utf-8") with open(name, 'wb') as f: f.write(html) return name except Exception as e: print "解析错误！"#----------------------------------------------------------------------def get_url_list(): """ 获取所有URL目录列表 :return: """ response = requests.get("http://www.liaoxuefeng.com/wiki/0014316089557264a6b348958f449949df42a6d3a2e542c000") soup = BeautifulSoup(response.content, "html.parser") menu_tag = soup.find_all(class_="uk-nav uk-nav-side")[1] urls = [] for li in menu_tag.find_all("li"): url = "http://www.liaoxuefeng.com" + li.a.get('href') urls.append(url) return urls #----------------------------------------------------------------------def save_pdf(htmls, file_name): """ 把所有html文件保存到pdf文件 :param htmls: html文件列表 :param file_name: pdf文件名 :return: """ options = { 'page-size': 'Letter', 'margin-top': '0.75in', 'margin-right': '0.75in', 'margin-bottom': '0.75in', 'margin-left': '0.75in', 'encoding': "UTF-8", 'custom-header': [ ('Accept-Encoding', 'gzip') ], 'cookie': [ ('cookie-name1', 'cookie-value1'), ('cookie-name2', 'cookie-value2'), ], 'outline-depth': 10, } pdfkit.from_file(htmls, file_name, options=options) #----------------------------------------------------------------------def main(): start = time.time() file_name = u"liaoxuefeng_Python3_tutorial" urls = get_url_list() for index, url in enumerate(urls): parse_url_to_html(url, str(index) + ".html") htmls =[] pdfs =[] for i in range(0,124): htmls.append(str(i)+'.html') pdfs.append(file_name+str(i)+'.pdf') save_pdf(str(i)+'.html', file_name+str(i)+'.pdf') print u"转换完成第"+str(i)+'个html' merger = PdfFileMerger() for pdf in pdfs: merger.append(open(pdf,'rb')) print u"合并完成第"+str(i)+'个pdf'+pdf output = open(u"廖雪峰Python_all.pdf", "wb") merger.write(output) print u"输出PDF成功！" for html in htmls: os.remove(html) print u"删除临时文件"+html for pdf in pdfs: os.remove(pdf) print u"删除临时文件"+pdf total_time = time.time() - start print(u"总共耗时：%f 秒" % total_time)#----------------------------------------------------------------------def changeDir(dir_name): """ 目录切换 """ if not os.path.exists(dir_name): os.mkdir(dir_name) os.chdir(dir_name)#----------------------------------------------------------------------if __name__ == '__main__': #存放文件的路径 dir_name = '/home/Python/Html' changeDir(dir_name) main()
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