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python 爬取百度文库并下载(免费文章限定)


python 爬取百度文库并下载(免费文章限定)

这篇文章主要介绍了python 爬取百度文库并下载的示例,帮助大家更好的理解和学习python 爬虫的相关知识,感兴趣的朋友可以了解下
  import requests  import re  import json  import os    session = requests.session()      def fetch_url(url):   return session.get(url).content.decode('gbk')      def get_doc_id(url):   return re.findall('view/(.*).html', url)[0]      def parse_type(content):   return re.findall(r"docType.*?:.*?'(.*?)',", content)[0]      def parse_title(content):   return re.findall(r"title.*?:.*?'(.*?)',", content)[0]      def parse_doc(content):   result = ''   url_list = re.findall('(https.*?0.json.*?)\\x22}', content)   url_list = [addr.replace("\\\/", "/") for addr in url_list]   for url in url_list[:-5]:    content = fetch_url(url)    y = 0    txtlists = re.findall('"c":"(.*?)".*?"y":(.*?),', content)    for item in txtlists:     if not y == item[1]:      y = item[1]      n = 'n'     else:      n = ''     result += n     result += item[0].encode('utf-8').decode('unicode_escape', 'ignore')   return result      def parse_txt(doc_id):   content_url = 'https://wenku.baidu.com/api/doc/getdocinfo?callback=cb&doc_id=' + doc_id   content = fetch_url(content_url)   md5 = re.findall('"md5sum":"(.*?)"', content)[0]   pn = re.findall('"totalPageNum":"(.*?)"', content)[0]   rsign = re.findall('"rsign":"(.*?)"', content)[0]   content_url = 'https://wkretype.bdimg.com/retype/text/' + doc_id + '?rn=' + pn + '&type=txt' + md5 + '&rsign=' + rsign   content = json.loads(fetch_url(content_url))   result = ''   for item in content:    for i in item['parags']:     result += i['c'].replace('\r', 'r').replace('\n', 'n')   return result      def parse_other(doc_id):   content_url = "https://wenku.baidu.com/browse/getbcsurl?doc_id=" + doc_id + "&pn=1&rn=99999&type=ppt"   content = fetch_url(content_url)   url_list = re.findall('{"zoom":"(.*?)","page"', content)   url_list = [item.replace("\", '') for item in url_list]   if not os.path.exists(doc_id):    os.mkdir(doc_id)   for index, url in enumerate(url_list):    content = session.get(url).content    path = os.path.join(doc_id, str(index) + '.jpg')    with open(path, 'wb') as f:     f.write(content)   print("图片保存在" + doc_id + "文件夹")      def save_file(filename, content):   with open(filename, 'w', encoding='utf8') as f:    f.write(content)    print('已保存为:' + filename)      # test_txt_url = 'https://wenku.baidu.com/view/cbb4af8b783e0912a3162a89.html?from=search'  # test_ppt_url = 'https://wenku.baidu.com/view/2b7046e3f78a6529657d5376.html?from=search'  # test_pdf_url = 'https://wenku.baidu.com/view/dd6e15c1227916888586d795.html?from=search'  # test_xls_url = 'https://wenku.baidu.com/view/eb4a5bb7312b3169a551a481.html?from=search'  def main():   url = input('请输入要下载的文库URL地址')   content = fetch_url(url)   doc_id = get_doc_id(url)   type = parse_type(content)   title = parse_title(content)   if type == 'doc':    result = parse_doc(content)    save_file(title + '.txt', result)   elif type == 'txt':    result = parse_txt(doc_id)    save_file(title + '.txt', result)   else:    parse_other(doc_id)      if __name__ == "__main__":   main()

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python 爬取百度文库并下载(免费文章限定)

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