如何在某些文本中找到所有Guid? [英] How can I find all the Guids in some text?

问题描述

我的数据库中有一堆网页内容，它们的链接如下:

I've got a bunch of web page content in my database with links like this:

<a href="/11ecfdc5-d28d-4121-b1c9-1f898ac0b72e">Link</a>

该Guid唯一标识符是同一数据库中另一个页面的ID.

That Guid unique identifier is the ID of another page in the same database.

我想抓取这些页面并检查链接是否断开.

I'd like to crawl those pages and check for broken links.

为此，我需要一个可以返回页面上所有Guid列表的函数:

To do that I need a function that can return a list of all the Guids on a page:

Function FindGuids(ByVal Text As String) As Collections.Generic.List(Of Guid)
    ...
End Function

我认为这是正则表达式的工作.但是，我不知道语法.

I figure that this is a job for a regular expression. But, I don't know the syntax.

推荐答案

Function FindGuids(ByVal Text As String) As List(Of Guid)
    Dim Guids As New List(Of Guid)
    Dim Pattern As String = "[a-fA-F0-9]{8}-([a-fA-F0-9]{4}-){3}[a-fA-F0-9]{12}"
    For Each m As Match In Regex.Matches(Text, Pattern)
        Guids.Add(New Guid(m.Value))
    Next
    Return Guids
End Function

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