做正则表达式全部或不做

Question

so I have this regex:

word1\/.+?\/word2($|[^\/]*)

I want this to match

word/2342/word2

But NOT

word/2342/word2/lalallaa

IE. as soon as word2 is followed by a slash, do not match AT ALL

Nonetheless, it would still match the 'word/2342/word2' part of the second regex... I want it to not match anything at all

How do I fix this regex?

Answer 1

What about:

word\/.+?\/word2$

?

Answer 2

Replace ($|[^\\/]*) with (?!\\/) , or at least ($|[^\\/]) . Right now, it'll match any number of non-slashes — including zero.

Answer 3

我尝试过：在Mac的RegExr中工作的^(word1?\\/.+?\\/word2($|[^\\/]*)) ，我输入了： word/2342/word2/word/2342/word2/和它仅与第一个word/2342/word2匹配，但这只会检查字符串是否以您要求的开头...即使是简单的(word)\\/[0-9]{4}\\/word2也可以使用并允许中间有4个数字..但是您的问题让您感到困惑，您真正想要的是什么？

Answer 4

那(.+\\bword2\\b)(?!\\/)呢？

Answer 5

In regex /^abc$/ , the ^ is to find pattern only in the beginning of the string and the $ is to find pattern only at the end of the string. Combined it will try to find a match with the whole string, it is like all or nothing match.

So put your regex to match in the string in the place of abc .