密码验证字段的正则表达式

Question

I'm trying to validate a password in my application by using Regex . I don't have much idea of Regex, This is what i got.

"^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9])(?=.*?[#?!@$%^&*-]).{8,}$"

This expression is also checking Special Character , and 1 upper case character in password.

I need a Regex that full fills following criteria.

1. Password Must be at least 8 characters Long.
2. Password must contain 1 Letter
3. Password must contain 1 Number
4. Password should not contain any special Character.

Answer 1

I won't claim to be a regex master, but for the password criteria you describe, you could use:

/^(?=.*?[a-zA-Z])(?=.*\\d)([a-zA-Z0-9])+$/ to test for conditions 2, 3, and 4.

For condition 1, I would just check the string length property to make sure it's at least 8 characters.

Note that in your current regex, you are requiring at least one uppercase letter, at least one lowercase letter, at least one digit, and at least one of the specified special characters (#?!@$%^&*-). Hope this helps.