使用request爬取拉钩网信息

通过cookies信息爬取

分析header和cookies

 

通过subtext粘贴处理header和cookies信息

 

处理后，方便粘贴到代码中

 

 爬取拉钩信息代码

import requests

class LagouSpider(object):

    def __init__(self):
        self.url ='https://www.lagou.com/jobs/positionAjax.json?needAddtionalResult=false'
        self.headers ={
            "Accept":"application/json, text/javascript, */*; q=0.01",
            "Accept-Encoding":"gzip, deflate, br",
            "Accept-Language":"zh-CN,zh;q=0.9",
            "Connection":"keep-alive",
            "Content-Length":"25",
            "Content-Type":"application/x-www-form-urlencoded; charset=UTF-8",
            "Cookie":"", #根据每个人登录信息填写 "Host":"www.lagou.com",
            "Origin":"https://www.lagou.com",
            "Referer":"https://www.lagou.com/jobs/list_python?city=%E5%85%A8%E5%9B%BD&cl=false&fromSearch=true&labelWords=&suginput=",
            "User-Agent":"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.108 Safari/537.36",
            "X-Anit-Forge-Code":"0",
            "X-Anit-Forge-Token":"None",
            "X-Requested-With":"XMLHttpRequest"
        }
        self.offset = 0
        self.data = {
            "first":'true',
            "pn":0,   # 页数请求
            "kd":'python' # 查询关键字
        }
        self.pos_li = []
        self.total = 0
        self.pageNo = 0
        self.resultSize = 0

    def start_request_total(self):
        """
         得到拉钩网页数信息
        :return:
        """
        response = requests.post(url=self.url, headers=self.headers, data=self.data)
        html = response.json()

        # 得到拉钩工作信息总数
        print(html['content']['positionResult'])
        self.total = html['content']['positionResult']['totalCount']
        # 得到拉钩工作信息每页展示数
        self.resultSize = html['content']['positionResult']['resultSize']
        # 从0开始
        self.pageNo = int(self.total / self.resultSize) if self.total % self.resultSize > 0 else int(self.total / self.resultSize)-1
        print(self.pageNo)
        print(len(html['content']['positionResult']['result']))

    def start_request(self):
        """
         得到拉钩每页工作信息
        :return:
        """
        response = requests.post(url=self.url, headers=self.headers, data=self.data)
        html = response.json()
        # 得到拉钩工作信息
        print(html['content']['positionResult']['result'])
        self.pos_li.append(html['content']['positionResult']['result'])

    def main(self):
        self.start_request_total()
        for i in range(self.pageNo):
            self.start_request()
        print(len(self.pos_li)) # 得到页数


if __name__ == '__main__':
    la = LagouSpider()
    la.main()

 

展示结果