电影天堂爬去示例基础2

代码部分1

// An highlighted block
from urllib import request
import re
import time
import random
from useragents import *
import pymysql

class FilmSky(object):
    def __init__(self):
        self.url = 'https://www.dytt8.net/html/gndy/dyzz/list_23_{}.html'
        # 定义两个对象
        self.db = pymysql.connect(
            '127.0.0.1','root','123456','maoyandb',charset='utf8'
        )
        self.cursor = self.db.cursor()

    # 获取html函数(因为两个页面都需要发请求)
    def get_page(self,url):
        req = request.Request(
            url=url,
            headers={'User-Agent':random.choice(ua_list)}
        )
        res = request.urlopen(req)
        # ignore参数,实在处理不了的编码错误忽略
        # 查看网页源码,发现网页编码为 gb2312,不是 utf-8
        html = res.read().decode('gb2312','ignore')

        return html

    # 解析提取数据(把名称和下载链接一次性拿到)
    # html为一级页面响应内容
    def parse_page(self,html):
        # 1. 先解析一级页面(电影名称 和 详情链接)
        pattern = re.compile('<table width="100%".*?<td height="26">.*?<a href="(.*?)".*?>(.*?)</a>',re.S)
        # film_list: [('详情链接','名称'),()]
        film_list = pattern.findall(html)
        # print(film_list)
        ins = 'insert into filmsky values(%s,%s)'
        for film in film_list:
            film_name = film[1]
            film_link = 'https://www.dytt8.net' + film[0]
            # 2. 拿到详情链接后,再去获取详情链接html,提取下载链接
            download_link = self.parse_two_html(film_link)

            self.cursor.execute(ins,[film_name,film_link])
            self.db.commit()

            # 打印测试
            d = {
                '电影名称':film_name,
                '下载链接':download_link
            }
            print(d)

    # 解析二级页面,获取下载链接
    def parse_two_html(self,film_link):
        two_html = self.get_page(film_link)
        pattern = re.compile('<td style="WORD-WRAP.*?>.*?>(.*?)</a>',re.S)
        download_link = pattern.findall(two_html)[0]

        return download_link


    # 主函数
    def main(self):
        for page in range(1,3):
            url = self.url.format(page)
            html = self.get_page(url)
            self.parse_page(html)
            time.sleep(random.randint(1,2))
            print('第%d页完成' % page)
        
        # 断开数据库(所有页爬完之后)
        self.cursor.close()
        self.db.close()
if __name__ == '__main__':
    start = time.time()
    spider = FilmSky()
    spider.main()
    end = time.time()
    print('执行时间:%.2f' % (end-start))

代码部分2

// An highlighted block
# 1. 打印程序执行时间
# 2. 随机的User-Agent,(确保每次发请求使用随机)
# 3. 数据爬下来后做处理(字符串),定义成字典
# 4. 一条龙: 获取 -> 调用解析 -> 数据处理

import requests
from lxml import etree
import time
import random

class MaoyanSpider(object):
    def __init__(self):
        self.url = 'https://maoyan.com/board/4?offset={}'
        self.ua_list = [
            'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.163 Safari/535.1',
            'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0) Gecko/20100101 Firefox/6.0',
            'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; InfoPath.3)'
        ]
        # 用于记录页数
        self.page = 1

    # 获取
    def get_page(self,url):
        # 每次使用随机的user-agent
        headers = {'User-Agent':random.choice(self.ua_list)}
        html = requests.get(
            url=url,
            headers=headers
        ).content.decode('utf-8')

        # 直接调用解析函数
        self.parse_page(html)

    # 解析
    def parse_page(self,html):
        # 创建解析对象
        parse_html = etree.HTML(html)
        movie_dict = {}
        # 1.基准xpath: 匹配每个电影信息的节点对象
        dd_list = parse_html.xpath('//dl[@class="board-wrapper"]/dd')
        # 2.for依次遍历每个节点对象,获取信息
        for dd in dd_list:
            # 名称
            movie_dict['name'] = dd.xpath('./a/@title')[0].strip()
            # 主演
            movie_dict['star'] = dd.xpath('.//p[@class="star"]/text()')[0].strip()
            # 时间
            movie_dict['time'] = dd.xpath('.//p[@class="releasetime"]/text()')[0].strip()

            print(movie_dict)


    def main(self):
        for offset in range(0,31,10):
            url = self.url.format(offset)
            self.get_page(url)
            time.sleep(random.randint(1,3))
            print('第%d页爬取完成' % self.page)
            self.page += 1


if __name__ == '__main__':
    start = time.time()
    spider = MaoyanSpider()
    spider.main()
    end = time.time()
    print('执行时间: %.2f' % (end-start)

标签：示例,url,self,电影,html,time,天堂,page,film
来源： https://blog.csdn.net/weixin_44422242/article/details/100130305