Question

我正在尝试制作一个简单的程序，该程序将获取网站上的所有图像地址，然后将其下载到文件夹中。问题是我收到403错误。我已经尝试修复了一个多小时，非常需要帮助。这是我的代码：

import urllib.request
import requests
from bs4 import BeautifulSoup



url = 'https://www.webtoons.com/en/slice-of-life/how-to-love/ep-100-happy-ending-last-episode/viewer?title_no=472&episode_no=100'
data = requests.get(url)
code = BeautifulSoup(data.text, 'html.parser')




photos = []

def dl_jpg(url, filePath, fileName):
    fullPath = filePath + fileName + '.jpg'
    urllib.request.urlretrieve(url, fullPath)

for img in code.find('div', id='_imageList'):
    pic = str(img)[43:147]
    photos.append(str(pic))

for photo in photos:
    if photo == '':
        photos.remove(photo)

for photo in photos[0:-4]:
    dl_jpg(photo, 'images/', 'img')

Answer 1

网站通常会阻止没有用户代理的请求。我更新了您的代码以与请求一起发送用户代理。我还选择只使用requests库并抛弃urllib。尽管urllib支持标头更改，但是您已经在使用requests，对此我更加熟悉。

我还建议在请求之间添加延迟/睡眠，30-45秒是一个不错的选择。这样可以避免向网站发送垃圾邮件并拒绝提供服务。如果您发送的邮件太快，某些网站也会阻止您的请求。

import requests
from bs4 import BeautifulSoup

user_agent = "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.37"
url = 'https://www.webtoons.com/en/slice-of-life/how-to-love/ep-100-happy-ending-last-episode/viewer?title_no=472&episode_no=100'
data = requests.get(url, headers={'User-Agent': user_agent})
code = BeautifulSoup(data.text, 'html.parser')

photos = []

def dl_jpg(url, filePath, fileName):
    fullPath = filePath + fileName + '.jpg'

    # make request with user-agent. If request is successful then save the result.
    image_request = requests.get(url, headers={'User-Agent': user_agent})
    if image_request.status_code == 200:
        with open(fullPath, 'wb') as f:
            f.write(image_request.content)

for img in code.find('div', id='_imageList'):
    pic = str(img)[43:147]
    photos.append(str(pic))

for photo in photos:
    if photo == '':
        photos.remove(photo)

for photo in photos[0:-4]:
    dl_jpg(photo, 'images/', 'img')

网页抓取错误（HTTP错误403：禁止）

1 个答案: