Python实现的爬取百度文库功能示例

本文实例讲述了Python实现的爬取百度文库功能。分享给大家供大家参考，具体如下：

# -*- coding: utf-8 -*-
from selenium import webdriver
from bs4 import BeautifulSoup
from docx import Document
from docx.enum.text import WD_ALIGN_PARAGRAPH# 用来居中显示标题
from time import sleep
from selenium.webdriver.common.keys import Keys
# 浏览器安装路径
#BROWSER_PATH=\'C:\Users\Administrator\AppData\Local\Google\Chrome\Application\chromedriver.exe'
#目的URL
DEST_URL='https://wenku.baidu.com/view/aa31a84bcf84b9d528ea7a2c.html'
#用来保存文档
doc_title = ''
doc_content_list = []
def find_doc(driver, init=True):
 global doc_content_list
 global doc_title
 stop_condition = False
 html = driver.page_source
 soup1 = BeautifulSoup(html, 'lxml')
 if (init is True): # 得到标题
   title_result = soup1.find('div', attrs={'class': 'doc-title'})
   doc_title = title_result.get_text() # 得到文档标题
   # 拖动滚动条
   init_page = driver.find_element_by_xpath( "//div[@class='foldpagewg-text-con']")
   print(type(init_page), init_page)
   driver.execute_script('arguments[0].scrollIntoView();', init_page)
   init_page.click()
   init = False
 else:
   try:
     page = driver.find_element_by_xpath( "//div[@class='pagerwg-schedule']")
     #print(type(next_page), next_page)
     next_page = driver.find_element_by_class_name("pagerwg-button")
     station = driver.find_element_by_xpath( "//div[@class='bottombarwg-root border-none']")
     driver.execute_script('arguments[0].scrollIntoView(false);', station)
     #js.executeScript("arguments[0].click();",next_page);
     #sleep(5)
     '''js = "window.scrollTo(508,600)"
     driver.execute_script(js)'''
     next_page.click()
   except:
     #结束条件
     print("找不到元素")
     stop_condition = True
     #next_page.send_keys(Keys.ENTER)
     # 遍历所有的txt标签标定的文档，将其空格删除，然后进行保存
 content_result = soup1.find_all('p', attrs={'class': 'txt'})
 for each in content_result:
   each_text = each.get_text()
   if ' ' in each_text:
     text = each_text.replace(' ', '')
   else:
     text = each_text
   # print(each_text)
   doc_content_list.append(text)
         # 得到正文内容
 sleep(2) # 防止页面加载过慢
 if stop_condition is False:
   doc_title, doc_content_list = find_doc(driver, init)
 return doc_title, doc_content_list
def save(doc_title, doc_content_list):
 document = Document()
 heading = document.add_heading(doc_title, 0)
 heading.alignment = WD_ALIGN_PARAGRAPH.CENTER # 居中显示
 for each in doc_content_list:
   document.add_paragraph(each)
 # 处理字符编码问题
 t_title = doc_title.split()[0]
 #print(t_title)
 #document.save('2.docx')
 document.save('百度文库-％s.docx'％ t_title)
 print("\n\nCompleted: ％s.docx, to read." ％ t_title)
 driver.quit()
if __name__ == '__main__':
 options = webdriver.ChromeOptions()
 options.add_argument('user-agent="Mozilla/5.0 (Linux; Android 4.0.4; \ Galaxy Nexus Build/IMM76B) AppleWebKit/535.19 (KHTML, like Gecko) \ Chrome/18.0.1025.133 Mobile Safari/535.19"')
 #driver = webdriver.Chrome(BROWSER_PATH, chrome_options=options)
 driver = webdriver.Chrome(chrome_options=options)
 driver.get(DEST_URL)
 #JavascriptExecutor js = (JavascriptExecutor) driver;
 print("**********START**********")
 title, content = find_doc(driver, True)
 save(title, content)
 driver.quit()

希望本文所述对大家Python程序设计有所帮助。