此程序以李毅吧为例子,以面向对象的设计思想实现爬取保存网页数据,暂时并未用到并发处理,以后有机会的话会加以改善
import requests class TiebaSpider(object): def __init__(self, tieba_name): # tieba_name为要爬取贴吧的名称 self.tieba_name = tieba_name self.url_temp = 'https://tieba.baidu.com/f?kw=' + tieba_name + '&ie=utf-8&pn={}' self.headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36', } def get_url_list(self): # 构造url列表 # url_list = [] # for i in range(1000): # url_list.append(self.url_temp.format(i * 50)) # return url_list return [self.url_temp.format(i*50) for i in range(1000)] # 列表推导式替换上面代码 def parse_url(self, url): # 发送请求,获取响应 print(url) respOnse= requests.get(url, headers=self.headers) return response.content.decode() def save_html(self, html_str, page_num): # 保存html字符串 file_path = '{}-第{}页.html'.format(self.tieba_name, page_num) with open(file_path, 'w', encoding='utf-8') as f: # 样例: 李毅-第一页.html f.write(html_str) def run(self): # 实现主要逻辑 # 1.构造url列表 url_list = self.get_url_list() # 2.遍历,发送请求,获取响应 for url in url_list: html_str = self.parse_url(url) # 3.保存 page_num = url_list.index(url) + 1 # 页码数 self.save_html(html_str, page_num) if __name__ == '__main__': tieba_spider = TiebaSpider('李毅') tieba_spider.run()
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。