针对chinabike、美骑网的爬虫

爬取网站：http://www.chinabike.net/和http://www.biketo.com/

import requests
from bs4 import BeautifulSoup
import bs4
import random
import csv
import json


def paqu(i):
    f = open('自行车.csv', 'a+', encoding='utf-8',newline='')
    csv_writer = csv.writer(f)
    if(i==1):
        csv_writer.writerow(["名字", "价格", "种类", "图片地址"])

    url = 'http://p.biketo.com/ajax/filterList?cate_id=0&brand_id=0&low=0&high=0&niche=&material=&transmission=&wheel_diameter=&tags_id=&page='+str(i)+'&sort=hot&sort_up=1'

    user_agent_list = [

        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36",
        "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0.1) Gecko/20100101 Firefox/4.0.1",
        "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50",
        "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0"

    ]
    # 每次请求的浏览器都不一样

    headers = {
        'user-agent': random.choice(user_agent_list),

    }
    response = requests.get(url, headers=headers)

    #print(response.text)
    jd = json.loads(response.text)

    data_list = jd['data']['data']
    for a in data_list:
        csv_writer.writerow([a['name'],(a['price']).replace("￥",""),a['category'],a['photo']])
        print(a['name']+" "+(a['price']).replace("￥","")+" "+a['category']+" "+a['photo'])



if __name__ == '__main__':
    # f = open('自行车.csv', 'w+', encoding='utf-8')
    # csv_writer = csv.writer(f)
     #csv_writer.writerow(["名字", "价格", "种类", "图片地址"])
    for i in range(1,47):
        paqu(i)