这是第三篇爬虫实战，运用request请求，beautifulsoup解析，mysql储存。
如果你正在学习爬虫，本文是比较好的选择，建议在学习的时候打开猫眼电影top100进行标签的选择，具体分析步骤就省略啦，具体的方法可看我以前的总结。
练习猫眼top100是为了复习request和beautifulsoup以及sql中表的创建、字段类型的设置。好了附上源代码
import requests
from bs4 import BeautifulSoup
from requests.exceptions import RequestException
headers = {
'user-agent': "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36"}
def get_page_index(url):
try:
respones = requests.get(url, headers=headers) # get请求
if respones.status_code == 200:
return respones.text
return None
except RequestException:
print("请求有错误")
return None
def parse_one_page(html):
soup = BeautifulSoup(html, 'lxml')
board_wrapper = soup.find_all('dl', class_='board-wrapper')[0]
board_index = board_wrapper.find_all('dd')
for link in board_index:
title = link.find_all('p', class_='name')[0].text
board_index = link.find_all('i')[0].text
star = link.find_all('p', class_='star')[0].text.strip()[3:]
releasetime = link.find_all('p', class_='releasetime')[0].text.strip()[5:]
score = link.find_all('p', class_='score')[0].text
print(board_index, title, star, releasetime, score)
def main():
t = [0, 10, 20, 30, 40, 50, 60, 70, 80, 90]
urls = ['https://maoyan.com/board/4?offset={}'.format(i) for i in t]
for url in urls:
html = get_page_index(url)
parse_one_page(html)
if __name__ == "__main__":
main()
爬取内容如下:
存入数据库
存入数据库01：新建表
ALTER TABLE maoyantop100 CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci;
create table maoyantop100
(board_index int not null,
title varchar(20) not null,
star varchar(50) not null,
releasetime varchar(50) not null,
score float not null);
存入数据库02
import pymysql
import requests
import json
from bs4 import BeautifulSoup
from requests.exceptions import RequestException
headers = {
'user-agent': "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36"}
def get_page_index(url):
try:
respones = requests.get(url, headers=headers) # get请求
if respones.status_code == 200:
return respones.text
return None
except RequestException:
print("请求有错误")
return None
def parse_one_page(html):
soup = BeautifulSoup(html, 'lxml')
board_wrapper = soup.find_all('dl', class_='board-wrapper')[0]
board_index = board_wrapper.find_all('dd')
for link in board_index:
title = link.find_all('p', class_='name')[0].text
board_index = link.find_all('i')[0].text
star = link.find_all('p', class_='star')[0].text.strip()[3:]
releasetime = link.find_all('p', class_='releasetime')[0].text.strip()[5:]
score = link.find_all('p', class_='score')[0].text
return board_index, title, star, releasetime, score
def save_to_mysql(board_index,title,star, releasetime,score):
cur = conn.cursor() #用来获得python执行Mysql命令的方法，操作游标。cur = conn.sursor才是真的执行
insert_data = "INSERT INTO maoyantop100(board_index,title,star, releasetime,score)" "VALUES(%s,%s,%s,%s,%s)"
val = (board_index,title,star, releasetime,score)
cur.execute(insert_data, val)
conn.commit()
conn=pymysql.connect(host="localhost",user="root", password='180****3940',db='58yuesao',port=3306, charset="utf8")
def main():
t = [0, 10, 20, 30, 40, 50, 60, 70, 80, 90]
urls = ['https://maoyan.com/board/4?offset={}'.format(i) for i in t]
for url in urls:
html = get_page_index(url)
board_index, title, star, releasetime, score = parse_one_page(html)
save_to_mysql(board_index, title, star, releasetime, score)
if __name__ == "__main__":
main()
存入数据库
本文存在一个小bug，在存入数据库时很崩溃，只爬取了每页的第一条信息。
我也不知道为什么，没存入数据库时爬取内容是完整的，存入之后就…………解决后会更新到本文。
