如何匹配非捕获组

This is my input string

这是输入字符串

=abc123&

I need to match the alphanumeric portion without capturing = and &.

我需要匹配不捕获=和&的字母数字部分。

The solution I found is to use a non-capturing group like:

我发现的解决方案是使用非捕获组，比如:

(?:=)[a-zA-Z0-9]+

The issue is that this matches

问题是，它匹配

=abc123

including = which I don't want to be included.

包含=我不想包含在内。

I tested the regex with http://www.regexr.com/

我使用http://www.regexr.com/测试了regex

1 个解决方案

[a-zA-Z0-9]+

You can simply use this.Or

你可以使用这个

=([a-zA-Z0-9]+)(?=&)

You can use this and grab the group 1.See demo.

您可以使用这个并获取组1。看到演示。

[a-zA-Z0-9]+

You can simply use this.Or

你可以使用这个

=([a-zA-Z0-9]+)(?=&)

You can use this and grab the group 1.See demo.

您可以使用这个并获取组1。看到演示。