拉钩网数据抓取
作者:互联网
import json import re import time import requests import multiprocessing class HandleLaGou(): def __init__(self): # 使用session保存cookies信息 self.lagou_session = requests.Session() self.header = { 'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36' } self.city_list = "" # 获取全国所有城市列表的方法 def handle_city(self): city_search = re.compile(r'zhaopin/">(.*?)</a>') city_url = 'https://www.lagou.com/jobs/allCity.html' city_result = self.handle_request(method="GET", url=city_url) # 使用正则表达式获取城市列表 self.city_list = city_search.findall(city_result) self.lagou_session.cookies.clear() # 清除cookies # print(city_result) def handle_city_job(self, city): first_request_url = "https://www.lagou.com/jobs/list_python?city=%s&cl=false&fromSearch=true&labelWords=&suginput=" % city first_response = self.handle_request(method="GET", url=first_request_url) total_page_search = re.compile(r'class="span\stotalNum">(\d+)</span>') try: total_page = total_page_search.search(first_response).group(1) # 由于没有岗位信息造成exception except: return else: for i in range(1, int(total_page) + 1): data = { "pn":i, "kd":"python" } page_url = "https://www.lagou.com/jobs/positionAjax.json?px=default&city=%s&needAddtionalResult=false"% city referer_url = 'https://www.lagou.com/jobs/list_python?&px=default&city=%s'%city #referer_url需要进行encode self.header['Referer'] = referer_url.encode() response = self.handle_request("POST",page_url,data=data,info=city) lagou_data = json.loads(response) job_list = lagou_data['content']['positionResult']['result'] for job in job_list: print(job) print(total_page) def handle_request(self, method, url, data=None, info=None): while True: #加入阿布云代理 proxyinfo = "http://%s:%s@%s:%s"%('','','','') proxy = { "http":proxyinfo, "https":proxyinfo } try: if method == "GET": response = self.lagou_session.get(url=url, headers=self.header,proxies=proxy,timeout=6) elif method =="POST": response = self.lagou_session.post(url=url, headers=self.header,data=data,proxies=proxy,timeout=6) except: # 需先清除cookies信息,然后重新获取 self.lagou_session.cookies.clear() first_request_url = "https://www.lagou.com/jobs/list_python?city=%s&cl=false&fromSearch=true&labelWords=&suginput=" % info self.handle_request(method="GET", url=first_request_url) time.sleep(10) continue response.encoding = 'utf-8' if '频繁' in response.text: print("频繁") #需先清除cookies信息,然后重新获取 self.lagou_session.cookies.clear() first_request_url = "https://www.lagou.com/jobs/list_python?city=%s&cl=false&fromSearch=true&labelWords=&suginput=" % info self.handle_request(method="GET", url=first_request_url) time.sleep(10) continue return response.text if __name__ == '__main__': lagou = HandleLaGou() # 所有城市方法 lagou.handle_city() #引入多进程,加速抓取 pool = multiprocessing.Pool(2) for city in lagou.city_list: pool.apply_async(lagou.handle_city_job,args=(city,)) pool.close() pool.join()
标签:city,handle,url,self,request,抓取,拉钩,lagou,数据 来源: https://www.cnblogs.com/Erick-L/p/11348119.html