无法从网页解析某些名称及其相关网址

Question

我已经使用请求和 BeautifulSoup 创建了一个 python 脚本来解析配置文件名称以及从网页到其配置文件名称的链接。内容似乎是动态生成的，但它们存在于页面源中。所以，我尝试了以下方法，但不幸的是我什么也没得到。网站链接到目前为止我的尝试：import requestsfrom bs4 import BeautifulSoupURL = 'https://www.century21.com/real-estate-agents/Dallas,TX'headers = {    'accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3',    'accept-encoding': 'gzip, deflate, br',    'accept-language': 'en-US,en;q=0.9,bn;q=0.8',    'cache-control': 'max-age=0',    'cookie': 'JSESSIONID=8BF2F6FB5603A416DCFBAB8A3BB5A79E.app09-c21-id8; website_user_id=1255553501;',    'user-agent': 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36'}def get_info(link):    res = requests.get(link,headers=headers)    soup = BeautifulSoup(res.text,"lxml")    for item in soup.select(".media__content"):        profileUrl = item.get("href")        profileName = item.select_one("[itemprop='name']").get_text()        print(profileUrl,profileName)if __name__ == '__main__':    get_info(URL)如何从该页面获取内容？

Answer 1

所需内容在页面源中可用。当使用相同的user-agent.所以，我曾经fake_useragent随机提供相同的请求。如果您不经常使用它，它会起作用。

工作解决方案：

import requests

from bs4 import BeautifulSoup

from urllib.parse import urljoin

from fake_useragent import UserAgent

URL = 'https://www.century21.com/real-estate-agents/Dallas,TX'

def get_info(s,link):

    s.headers["User-Agent"] = ua.random

    res = s.get(link)

    soup = BeautifulSoup(res.text,"lxml")

    for item in soup.select(".media__content a[itemprop='url']"):

        profileUrl = urljoin(link,item.get("href"))

        profileName = item.select_one("span[itemprop='name']").get_text()

        print(profileUrl,profileName)

if __name__ == '__main__':

    ua = UserAgent()

    with requests.Session() as s:

        get_info(s,URL)

部分输出：

https://www.century21.com/CENTURY-21-Judge-Fite-Company-14501c/Stewart-Kipness-2657107a Stewart Kipness

https://www.century21.com/CENTURY-21-Judge-Fite-Company-14501c/Andrea-Anglin-Bulin-2631495a Andrea Anglin Bulin

https://www.century21.com/CENTURY-21-Judge-Fite-Company-14501c/Betty-DeVinney-2631507a Betty DeVinney

https://www.century21.com/CENTURY-21-Judge-Fite-Company-14501c/Sabra-Waldman-2657945a Sabra Waldman

https://www.century21.com/CENTURY-21-Judge-Fite-Company-14501c/Russell-Berry-2631447a Russell Berry

Answer 2

看起来你也可以构建 url（虽然看起来更容易抓住它）

import requests

from bs4 import BeautifulSoup as bs

URL = 'https://www.century21.com/real-estate-agents/Dallas,TX'

headers = {

    'accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3',

    'accept-encoding': 'gzip, deflate, br',

    'accept-language': 'en-US,en;q=0.9,bn;q=0.8',

    'cache-control': 'max-age=0',

    'cookie': 'JSESSIONID=8BF2F6FB5603A416DCFBAB8A3BB5A79E.app09-c21-id8; website_user_id=1255553501;',

    'user-agent': 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36'

}

r = requests.get(URL, headers = headers)

soup = bs(r.content, 'lxml')

items = soup.select('.media')

ids = []

names = []

urls = []

for item in items:

    if item.select_one('[data-agent-id]') is not None:

        anId = item.select_one('[data-agent-id]')['data-agent-id']

        ids.append(anId)

        name = item.select_one('[itemprop=name]').text.replace(' ','-')

        names.append(name)

        url = 'https://www.century21.com/CENTURY-21-Judge-Fite-Company-14501c/' + name + '-' + anId + 'a'

        urls.append(url)

results = list(zip(names,  urls))

print(results)

Answer 3

页面内容不是通过 javascript 呈现的。你的代码在我的情况下很好。您在查找 profileUrl 和处理nonetype异常方面遇到了一些问题。您必须专注于a标签才能获取数据

你应该试试这个：

import requests

from bs4 import BeautifulSoup

URL = 'https://www.century21.com/real-estate-agents/Dallas,TX'

headers = {

    'accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3',

    'accept-encoding': 'gzip, deflate, br',

    'accept-language': 'en-US,en;q=0.9,bn;q=0.8',

    'cache-control': 'max-age=0',

    'cookie': 'JSESSIONID=8BF2F6FB5603A416DCFBAB8A3BB5A79E.app09-c21-id8; website_user_id=1255553501;',

    'user-agent': 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36'

}

def get_info(link):

    res = requests.get(link,headers=headers)

    soup = BeautifulSoup(res.text,"lxml")

    results = []

    for item in soup.select(".media__content"):

        a_link = item.find('a')

        if a_link:

            result = {

                    'profileUrl': a_link.get('href'),

                    'profileName' : a_link.get_text()

                }

        results.append(result)

    return results

if __name__ == '__main__':

    info = get_info(URL)

    print(info)

    print(len(info))

输出：

[{'profileName': 'Stewart Kipness',

  'profileUrl': '/CENTURY-21-Judge-Fite-Company-14501c/Stewart-Kipness-2657107a'},

  ....,

 {'profileName': 'Courtney Melkus',

  'profileUrl': '/CENTURY-21-Realty-Advisors-47551c/Courtney-Melkus-7389925a'}]

941