使用python re modu从页面获取viewstate的正则表达式

Question

我有一根这样的绳子：

|0|hiddenField|_EVENTTARGET||0|hidden|_EVENTARGUMENT||0|hiddenField|_LASTFOCUS||3848|hiddenField|_VIEWSTATE|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|0|hiddenField|

我需要从这个字符串中获取UuViewState的值，它是：

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

我尝试过几种使用re-module的模式，但都没有很好。可以有人帮我吗？在

Answer 1

这是有效的：

_VIEWSTATE\|([^|]*)

演示：http://rubular.com/r/JoFyUu5NsC

通过@dbupp的添加：

^{pr2}$

http://rubular.com/r/HmnapACGEw

Answer 2

这个正则表达式就是这样

_VIEWSTATE\|([^|"]*)

它将把viewstate存储在组1中。要使用的Python代码是

^{pr2}$

读了你的评论，我想用“结尾分隔符”也是可能的，对吧？你在处理ASP.NET也许是viewstate。在