如何在 Spring 应用程序中为名称模式创建包含和排除字符的正则表达式

Question

I want to create regex with following conditions

1. Cannot include ` / * ? " < > | (space character) , #
2. Cannot start with - _ +
3. Cannot be. or ..

Here is my regex:

[^A-Z+\/\\*?"<>|`` `,#.][a-z0-9_+-]+

Above regex satisfy above condition [1] and [3] but not [2]. How should I satisfy above conditions using the regex?

Answer 1

Something like:

^[a-zA-Z0-9][a-zA-Z0-9_-]*$

Should work, though no periods would be acceptable at all, not just the . and .. patterns.

edit, maybe?

^[a-zA-Z0-9][a-zA-Z0-9_-][^.][^..]*$