如何将BeautifulSoup标记转换为JSON? [英] How to convert a BeautifulSoup tag to JSON?

问题描述

我有一个类型元素bs4.element.Tag，它是Web抓取的产品，我通常这样做:json.loads (soup.find ('script', type = 'application / ld + json'). Text)，但是在此页面上它仅出现在:<script> </script>中，所以我必须做:scripts = soup.find_all ('script')直到我找到我感兴趣的人:script = scripts [18].

I have a type element, bs4.element.Tag, product of a web scraping, I usually do: json.loads (soup.find ('script', type = 'application / ld + json'). Text) , but on this page it only appears in: <script> </script> so I had to do: scripts = soup.find_all ('script') until I get to the one that interests me: script = scripts [18].

有问题的变量是script.我的问题是我想访问其属性，例如script ['goodsInfo']，显然是元素类型bs4.element.Tag，请尝试执行:script.attrs并返回我{}.然后我尝试将其转换为类型json: json.loads (str (script))，并抛出异常:'JSONDecodeError:预期值:第1行第1列(char 0)'

The variable in question is script. My problem is that I want to access its attributes, for example script ['goodsInfo'], obviously being an element type bs4.element.Tag, try to do: script.attrs and return me {}. Then I tried to convert it to the type json: json.loads (str (script)) and it throws me the exception: 'JSONDecodeError: Expecting value: line 1 column 1 (char 0)'

这是我的代码:

import json
from bs4 import BeautifulSoup
import requests
url_aux = 'https://www.shein.com/Mock-neck-Brush-Stroke-Print-Bodycon-Dress-p-941649-cat-1727.html?scici=navbar_2~~tab01navbar04~~4~~real_1727~~~~0~~0'

response = requests.get(url_aux)
soup = BeautifulSoup(response.content, "html.parser")

scripts = soup.find_all('script')
script = scripts[18]

print(json.loads(str(script)))
#output: JSONDecodeError: Expecting value: line 1 column 1 (char 0)

print(type(script))
#output: bs4.element.Tag

print(str(json.loads(str(script))))

推荐答案

您可以使用json模块提取数据，但首先必须找到正确的信息-您可以使用re模块.

You can use json module to extract the data, but first it's necessary to locate the right info - you can use re module for that.

例如:

import re
import json
import requests

url = 'https://eur.shein.com/Mock-neck-Brush-Stroke-Print-Bodycon-Dress-p-941649-cat-1727.html?scici=navbar_2~~tab01navbar04~~4~~real_1727~~~~0~~0&ref=www&rep=dir&ret=eur'

txt = re.findall(r'goodsInfo\s*:\s*({.*})', requests.get(url).text)[0]

data = json.loads(txt)

# print(json.dumps(data, indent=4)) # <-- uncomment to see all data

print(data['detail']['goods_name'])
print(data['detail']['brand'])
print('Num of comments:', data['detail']['comment']['comment_num'])

打印:

Mock-neck Brush Stroke Print Bodycon Dress
SHEIN
Num of comments: 17

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