.1 学习beautifulsoup
import urllib.request
from bs4 import BeautifulSoup as bs
def main():
headers = {
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) "
"Chrome/58.0.3029.110 Safari/537.36 SE 2.X MetaSr 1.0"
}
url = 'http://www.dxy.cn/bbs/thread/626626'
request = urllib.request.Request(url, headers=headers)
response = urllib.request.urlopen(request).read().decode("utf-8")
html = bs(response, 'lxml')
getItem(html)
def getItem(html):
datas = []
for data in html.find_all("tbody"):
try:
userid = data.find("div", class_="auth").get_text(strip=True)
print(userid)
content = data.find("td", class_="postbody").get_text(strip=True)
print(content)
datas.append((userid,content))
except:
pass
print(datas)
if __name__ == '__main__':
main()
2.2 学习xpath
js1 = 'document.querySelector("#j_loginTab1").style.display="none";'
browser.execute_script(js1)
time.sleep(1)
js2 = 'document.querySelector("#j_loginTab2").style.display="block";'
browser.execute_script(js2)
input_name = browser.find_element_by_name('username')
input_name.clear()
input_name.send_keys(********')
input_pass = browser.find_element_by_name('password')
input_pass.clear()
input_pass.send_keys('********')
browser.find_element_by_xpath('//*[@class="form__button"]/button').click()
user = tree.xpath('//div[@id="postcontainer"]//div[@class="auth"]/a/text()')
content = tree.xpath('//td[@class="postbody"]')
# -*- coding:utf-8 -*-
import requests, json, re, random,time
from bs4 import BeautifulSoup
from selenium import webdriver
from lxml import etree
class getUrl(object):
"""docstring for getUrl"""
def __init__(self):
self.headers={
"Connection": "keep-alive",
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 "
"(KHTML, like Gecko) Chrome/51.0.2704.63 Safari/537.36",
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
"Accept-Encoding": "gzip, deflate, sdch",
"Accept-Language": "zh-CN,zh;q=0.8"
};
def run(self):
browser = webdriver.Chrome()
browser.get('https://auth.dxy.cn/accounts/login?service=http://www.dxy.cn/bbs/index.html')
time.sleep(1)
#切换账号密码登录表单
js1 = 'document.querySelector("#j_loginTab1").style.display="none";'
browser.execute_script(js1)
time.sleep(1)
js2 = 'document.querySelector("#j_loginTab2").style.display="block";'
browser.execute_script(js2)
#输入账号密码
input_name = browser.find_element_by_name('username')
input_name.clear()
input_name.send_keys('*********')
input_pass = browser.find_element_by_name('password')
input_pass.clear()
input_pass.send_keys('*******')
browser.find_element_by_xpath('//*[@class="form__button"]/button').click()
#先跳过
time.sleep(10)
cookie = browser.get_cookies()
cookie_dict = {i['name']:i['value'] for i in cookie}
#转到抓取页面
browser.get("http://www.dxy.cn/bbs/thread/626626#626626");
html = browser.page_source
tree = etree.HTML(html)
user = tree.xpath('//div[@id="postcontainer"]//div[@class="auth"]/a/text()')
content = tree.xpath('//td[@class="postbody"]')
for i in range(0,len(user)):
result = user[i].strip()+":"+content[i].xpath('string(.)').strip()
#写入文件
dir_file = open("DXY_records.txt",'a', encoding="utf-8")
dir_file.write(result+"\n")
dir_file.write('*' * 80+"\n")
dir_file.close()
print('*' * 5 +"抓取结束"+'*' * 5)
if __name__ == '__main__':
geturl = getUrl()
geturl.run()
