如何使用BeautifulSoup从JS代码中抓取url标签？

Question

我试图使用BeautifulSoup从网页上的JS脚本中抓取所有网址，脚本如下所示pastebin link：

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我想从此JS脚本中删除所有视频"url"链接。我非常确信我不能用BeautifulSoup做到这一点，所以我可以使用什么代替（最好是正确的代码）。

每次加载页面时URL也会更新（并在设定的时间后过期），那么是否可以编写一些始终获得新URL的代码？

Answer 1

我不确定您希望如何区分其他链接中的视频，但您可以使用以下功能从文档中删除所有网址，

def all_links(content):
    links = []
    url_re = re.compile(r'"(https?://[^"]*)"')
    for m in url_re.finditer(content):
        links.append(m.group(1))
    return links

（这可以写成一行列表理解，但这种方式更具可读性。）

要根据JS对象中的标签提取特定链接，例如“cdn_url：”链接，您可以使用更具体的正则表达式，如下所示，

m = re.search(r'"cdn_url": *"(https?://[^"]*)"')
if m:
    link = m.group(1)

这应该让你去。