kotlin 中的密码验证

Question

我需要一个正则表达式来验证密码密码必须是：长度为 8 个字符， 2个大写，3个小写，1个特殊字符和2个数字

([A-Z]{2})([?!@#*%^&-+]{1})([0-9]{2})([a-z]{3})$ 这是我想出的，但问题是它不符合任何顺序。

Answer 1

^(?=(?:.*[a-z]){3})(?=(?:.*[A-Z]){2})(?=.*[?!@#*%^&-+])(?=(?:.*\d){2})[a-zA-Z?!@#*%^&-+\d]{8}$

解释：

^                       // Assert is the beginning of the string
(?=(?:.*[a-z]){3})      // Positive lookahead to match exactly 3 lowercase letters
(?=(?:.*[A-Z]){2})      // Positive lookahead to match exactly 2 uppercase letters
(?=.*[?!@#*%^&-+])      // Positive lookahead to match exactly 1 special character
(?=(?:.*\d){2})         // Positive lookahead to match exactly 2 numbers
[a-zA-Z?!@#*%^&-+\d]{8} // Assert that has exactly 8 of the defined characters
$                       // Assert is the end of the string

测试：RegExr

关于正则表达式知识的其他回复：

kotlin 中的密码验证

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