遍历嵌套的 JSON 对象并在整个过程中获取值

Question

从事 API 项目，我试图从 API 输出中获取所有重定向 URL，例如 https://urlscan.io/api/v1/result/39a4fc22-39df-4fd5-ba13-21a91ca9a07d/

我尝试从中提取网址的示例：

"redirectResponse": {
  "url": "https://www.coke.com/"

我目前有以下代码：

import requests
import json
import time

#URL to be scanned
url = 'https://www.coke.com'

#URL Scan Headers
headers = {'API-Key':apikey,'Content-Type':'application/json'}
data = {"url":url, "visibility": "public"}
response = requests.post('https://urlscan.io/api/v1/scan/',headers=headers, data=json.dumps(data))

uuid = response.json()['uuid']
responseUrl = response.json()['api']

time.sleep(10)

req = requests.Session()
r = req.get(responseUrl).json()
r.keys()

for value in  r['data']['requests']['redirectResponse']['url']:
    print(f"{value}")

我收到以下错误：TypeError: list indices must be integers or slices, not str。不确定解析嵌套 json 以获得所有重定向 URL 的最佳方法是什么。

Answer 1

A redirectResponse 并不总是出现在 requests 中，因此必须编写代码来处理该问题并继续进行。在 Python 中，通常使用 try/except:

for obj in r['data']['requests']:
    try:
        redirectResponse = obj['request']['redirectResponse']
    except KeyError:
        continue  # Ignore and skip to next one.
    url = redirectResponse['url']
    print(f'{url=!r}')

遍历嵌套的 JSON 对象并在整个过程中获取值

Iterate through nested JSON object and get values throughout

python

parsing

json