爬取不同商品只要换下User-Agent和url就行了

单线程方法

#coding=gbk
import re
import time
import csv
import os
import requests
import html

headers = {
    'cookie': 'shshshfp=22dd633052035d21be92463ffa35684d; shshshfpa=ab283f84-c40f-9710-db89-84a8d3366a81-1586333030; __jda=122270672.1586333031101106032014.1586333031.1586333031.1586333031.1; __jdv=122270672|direct|-|none|-|1586333031103; __jdc=122270672; shshshfpb=bUe7tI9%2FOOaJKd7vP0EtSOg%3D%3D; __jdu=1586333031101106032014; areaId=22; ipLoc-djd=22-1977-1980-0; 3AB9D23F7A4B3C9B=7XEQD4BFTGEH44EK7LN7HLFCHJW6W2NS5VJOQOCHABZVI7LXJJIW3K2IX5MTPZ4TBERBLY6TRQR5CA3S3IYVLQ2JGI; jwotest_product=99; shshshsID=a7457cee6a4a9fa285fe2cff44c6bd17_4_1586333142454; __jdb=122270672.4.1586333031101106032014|1.1586333031; JSESSIONID=8C21549A613B83F0CB86EF1F38FD63D3.s1',
    'sec-fetch-dest': 'document',
    'sec-fetch-mode': 'navigate',
    'sec-fetch-site': 'none',
    'sec-fetch-user': '?1',
    'upgrade-insecure-requests': '1',
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36'
}

def comment_crawl(page, writer):
    print('当前正在下载第%d页评论' % (page + 1))
    url = 'https://club.jd.com/comment/productPageComments.action?callback=fetchJSON_comment98&productId=10026434916372&score=0&sortType=5&page=0&pageSize=10&isShadowSku=0&fold=1'    # 请求链接获取数据
    text = requests.get(url, headers=headers).text
    comment_list = re.findall(
        r'guid":".*?"content":"(.*?)".*?"creationTime":"(.*?)",".*?"replyCount":(\d+),"score":(\d+).*?usefulVoteCount":(\d+).*?imageCount":(\d+).*?images":',
        text)
    for result in comment_list:
        content = html.unescape(result[0]).replace('\n', ' ')
        comment_time = result[1]
        reply_count = result[2]
        score = result[3]
        vote_count = result[4]
        image_count = result[5]
        writer.writerow((comment_time, score, reply_count, vote_count, image_count, content))

if __name__ == '__main__':
    start = time.time()
    if os.path.exists('DATA3.csv'):
        os.remove('DATA3.csv')
    with open('DATA3.csv', 'a+', newline='', encoding='gb18030') as f:
        writer = csv.writer(f)
        writer.writerow(('留言时间', '评分', '回复数', '点赞数', '图片数', '评论内容'))
        for page in range(100):
            comment_crawl(page, writer)
    run_time = time.time() - start
    print('运行时间为%d分钟%d秒。' % (run_time // 60, run_time % 60))

多线程

#coding=gbk
import re
import time
import csv
import os
from concurrent.futures import ThreadPoolExecutor
import requests
import html

headers = {
    'cookie': 'shshshfp=22dd633052035d21be92463ffa35684d; shshshfpa=ab283f84-c40f-9710-db89-84a8d3366a81-1586333030; __jda=122270672.1586333031101106032014.1586333031.1586333031.1586333031.1; __jdv=122270672|direct|-|none|-|1586333031103; __jdc=122270672; shshshfpb=bUe7tI9%2FOOaJKd7vP0EtSOg%3D%3D; __jdu=1586333031101106032014; areaId=22; ipLoc-djd=22-1977-1980-0; 3AB9D23F7A4B3C9B=7XEQD4BFTGEH44EK7LN7HLFCHJW6W2NS5VJOQOCHABZVI7LXJJIW3K2IX5MTPZ4TBERBLY6TRQR5CA3S3IYVLQ2JGI; jwotest_product=99; shshshsID=a7457cee6a4a9fa285fe2cff44c6bd17_4_1586333142454; __jdb=122270672.4.1586333031101106032014|1.1586333031; JSESSIONID=8C21549A613B83F0CB86EF1F38FD63D3.s1',
    'sec-fetch-dest': 'document',
    'sec-fetch-mode': 'navigate',
    'sec-fetch-site': 'none',
    'sec-fetch-user': '?1',
    'upgrade-insecure-requests': '1',
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36'
}

def comment_crawl(page, writer):
    print('当前正在下载第%d页评论' % (page + 1))
    url = 'https://club.jd.com/comment/productPageComments.action?callback=fetchJSON_comment98&productId=10026434916372&score=0&sortType=5&page=0&pageSize=10&isShadowSku=0&fold=1'  
    text = requests.get(url, headers=headers).text
    comment_list = re.findall(
        r'guid":".*?"content":"(.*?)".*?"creationTime":"(.*?)",".*?"replyCount":(\d+),"score":(\d+).*?usefulVoteCount":(\d+).*?imageCount":(\d+).*?images":',
        text)
    print("dsgffg")
    for result in comment_list:
        print("wefgweg")
        content = html.unescape(result[0]).replace('\n', ' ')
        comment_time = result[1]
        reply_count = result[2]
        score = result[3]
        vote_count = result[4]
        image_count = result[5]
        writer.writerow((comment_time, score, reply_count, vote_count, image_count, content))

if __name__ == '__main__':
    start = time.time()
    pool = ThreadPoolExecutor(5)
    if os.path.exists('DATA3.csv'):
        os.remove('DATA3.csv')
    with open('DATA3.csv', 'a+', newline='', encoding='gb18030') as f:
        writer = csv.writer(f)
        writer.writerow(('留言时间', '评分', '回复数', '点赞数', '图片数', '评论内容'))
        for page in range(100):
            pool.submit(comment_crawl, page, writer)
    run_time = time.time() - start
    print('运行时间为%d分钟%d秒。' % (run_time // 60, run_time % 60))