糗事百科

1 import requests 2 from lxml import etree 3 from queue import Queue 4 import threading 5  6  7 class Qiubai: 8     def __init__(self): 9         self.temp_url = "https://www.qiushibaike.com/8hr/page/{}/"10         self.headers= {
   "User-Agent":"Mozilla/5.0 (Macintosh; Intel Mac OS X \11         10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36"}12         self.url_queue = Queue()13         self.html_queue = Queue()14         self.content_list_queue = Queue()15 16     def get_url_list(self):#获取url列表17         for i in range(1,14):18             self.url_queue.put(self.temp_url.format(i))19 20     def parse_url(self):21         while True: #在这里使用，子线程不会结束，把子线程设置为守护线程22             url = self.url_queue.get()23             # print(url)24             response = requests.get(url,headers=self.headers)25             self.html_queue.put(response.content.decode())26             self.url_queue.task_done()27 28 29     def get_content_list(self):  #提取数据30         while True:31             html_str = self.html_queue.get()32             html = etree.HTML(html_str)33             div_list = html.xpath("//div[@id='content-left']/div")34             content_list = []35             for div in div_list:36                 content = {}37                 content["content"] = div.xpath(".//div[@class='content']/span/text()")38                 content_list.append(content)39             self.content_list_queue.put(content_list)40             self.html_queue.task_done()41 42     def save_content_list(self):43         while True:44             content_list = self.content_list_queue.get()45             for content in content_list:46                 print(content) # 此处对数据进行保存操作47             self.content_list_queue.task_done()48 49 50     def run(self):51         thread_list = []52         #1.url_list53         t_url = threading.Thread(target=self.get_url_list)54         thread_list.append(t_url)55         #2.遍历，发送请求，56         for i in range(3):  #三个线程发送请求57             t_parse = threading.Thread(target=self.parse_url)58             thread_list.append(t_parse)59         #3.提取数据60         t_content = threading.Thread(target=self.get_content_list)61         thread_list.append(t_content)62         #4.保存63         t_save = threading.Thread(target=self.save_content_list)64         thread_list.append(t_save)65 66         for t in thread_list:67             t.setDaemon(True)  #把子线程设置为守护线程，当前这个线程不重要，主线程结束，子线程技术68             t.start()69 70         for q in [self.url_queue,self.html_queue,self.content_list_queue]:71             q.join()  #让主线程阻塞，等待队列的计数为0，72 73         print("主线程结束")74 75 if __name__ == '__main__':76 77     qiubai = Qiubai()78     qiubai.run()