爬虫_demo

# coding=utf-8
import requests
from lxml import etree

class QiubaiSpider:
    def __init__(self):
        self.url_temp = "https://www.qiushibaike.com/8hr/page/{}/"
        self.headers = {"User-Agent":"Mozilla/5.0 (Macintosh; Intel Mac OS X \
        10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36"}
    def get_url_list(self): #获取url列表
        return [self.url_temp.format(i) for i in range(1,14)]

    def parse_url(self,url): #发送请求，获取响应
        print(url)
        return requests.get(url,headers=self.headers).content.decode()

    def get_content_list(self,html_str): #提取段子
        html = etree.HTML(html_str)
        div_list = html.xpath("//div[@id='content-left']/div")
        content_list = []
        for div in div_list:
            content = {}
            content["content"]=div.xpath(".//div[@class='content']/span/text()")
            content_list.append(content)
        return content_list

    def save_content_list(self,content_list): # 保存数据
        pass

    def run(self):
        #1. url_list
        url_list = self.get_url_list()
        #2. 遍历，发送请求
        for url in url_list:
            html_str = self.parse_url(url)
            #3. 提取数据
            content_list = self.get_content_list(html_str)
            #4. 保存
            self.save_content_list(content_list)

if __name__ == '__main__':
    qiubai = QiubaiSpider()
    qiubai.run()