爬虫系列（十四）：糗事百科实例：

爬取糗事百科段子，假设页面的URL是 http://www.qiushibaike.com/8hr/page/1

要求：

1.使用requests获取页面信息，用XPath / re 做数据提取

2.获取每个帖子里的用户头像链接、用户姓名、段子内容、点赞次数和评论次数

3.保存到 json 文件内

参考代码

    #qiushibaike.py

    #import urllib
    #import re
    #import chardet

    import requests
    from lxml import etree

    page = 1
    url = 'http://www.qiushibaike.com/8hr/page/' + str(page) 
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36',
        'Accept-Language': 'zh-CN,zh;q=0.8'}

    try:
        response = requests.get(url, headers=headers)
        resHtml = response.text

        html = etree.HTML(resHtml)
        result = html.xpath('//div[contains(@id,"qiushi_tag")]')

        for site in result:
            item = {}

            imgUrl = site.xpath('./div/a/img/@src')[0].encode('utf-8')
            username = site.xpath('./div/a/@title')[0].encode('utf-8')
            #username = site.xpath('.//h2')[0].text
            content = site.xpath('.//div[@class="content"]/span')[0].text.strip().encode('utf-8')
            # 投票次数
            vote = site.xpath('.//i')[0].text
            #print site.xpath('.//*[@class="number"]')[0].text
            # 评论信息
            comments = site.xpath('.//i')[1].text

            print imgUrl, username, content, vote, comments

    except Exception, e:
        print e

演示效果：

image.png