C# 正则表达式匹配 url 末尾的模式

Question

I need a regex that matches a pattern for urls with the end like -p123456.html , so the end it will have a hyphen and the letter p followed by a sequence of numbers right before .html .

Here are some examples:

• https://www.myurl.com/br/test-url-p04548023.html (MATCH)
• https://www.myurl.com/sometext-p123.html (MATCH)
• https://www.myurl.com/text-h504.html (DOESN'T MATCH)
• https://www.myurl.com/text.html (DOESN'T MATCH)

Can anyone help me with that?

Answer 1

This will work for your case: .+\-p\d+\.html$

Note: You could expand this to do more url validation, but this is quick and easy if you know your input is always going to be a url.

Explanation:

.+ - wildcard to start the string. Matches all up until the -p you care about

\-p - matches literal character '-' and 'p' . Note: you don't have to escape the dash, but I like to because I don't want to confuse it with ranges such as [az] . You could use -p here.

\d+ - your series of characters (1 or more)

\.html - escaping the dot ( '.' ) is important here so it's not just a wildcard. This matches literal '.html'

$ - matches the end of the string so you know the url ends with -p1234.html