Python3 Ajax加载的网页爬取

浅浅的花香味﹌ 2022-05-09 05:33 221阅读 0赞

url：今日头条，搜索“街拍”并打开

[https://www.toutiao.com/search/?keyword=%E8%A1%97%E6%8B%8D][https_www.toutiao.com_search_keyword_E8_A1_97_E6_8B_8D]

浏览器：firefox

分析：打开页面，空白处单击鼠标右键，选择 ”查看元素”

在下面弹出元素框内选择 网络，并在右边的框内选择 XHR

网页往下拉。。。。。

直到元素框有数据出现。

#coding=utf-8
    import re
    import time
    import requests
    from urllib.parse import urlencode
    from requests.exceptions import RequestException
    
    def getHtml(url,offset):
        try:
            headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0'}     #伪装一下
            data = {"autoload":"true",
                    "count":'20',
                    "cur_tab":'1',
                    "format":"json",
                    "from":"search_tab",
                    "keyword":"街拍",
                    "offset":offset, 
                }
            url = url + urlencode(data)
            response = requests.get(url,headers = headers).json()
            return response
        except RequestException:
            return None
    
    if __name__=='__main__':
        urls = []
        url = "https://www.toutiao.com/search_content/?"
        host_url = "https://www.toutiao.com/a"
        for offset in range(0,20,20):
            html = getHtml(url,offset)
            if html is None:
                continue
            data = html.get('data')
            for item in data:
                group = item.get('group_id')
                if group is None:
                    continue
                group = host_url + group
                urls.append(group)
    
            time.sleep(1)
        for url in urls:
            print (url)

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![20200607142700196.png][]

[https_www.toutiao.com_search_keyword_E8_A1_97_E6_8B_8D]: https://www.toutiao.com/search/?keyword=%E8%A1%97%E6%8B%8D
[20200607142700196.png]: /images/20220509/8da004f010bf41bfb7104d4f98dc3ae6.png