问题
What would be the correct regex, to satisfy the following password criteria:
- Must include at least 1 lower-case letter.
- Must include at least 1 upper-case letter.
- Must include at least 1 number.
- Must include at least 1 special character (only the following special characters are allowed:
!#%). - Must NOT include any other characters then
A-Za-z0-9!#%(must not include;for example). - Must be from 8 to 32 characters long.
This is what i tried, but it doesn't work:
^(?=.*?[a-z])(?=.*?[A-Z])(?=.*?[0-9])(?=.*?[\!\#\@\$\%\&\/\(\)\=\?\*\-\+\-\_\.\:\;\,\]\[\{\}\^]).{8,32}
But it should be:
^(?=.*?[a-z])(?=.*?[A-Z])(?=.*?[0-9])(?=.*?[\!\#\@\$\%\&\/\(\)\=\?\*\-\+\-\_\.\:\;\,\]\[\{\}\^])[A-Za-z0-9!#%]{8,32}
But Unihedron's solution is better anyways, just wanted to mention this for the users which will read this question in the future. :)
Unihedron's solution (can also be found in his answer below, i copied it for myself, just in case he changes (updates it to an better version) it in his answer):
^(?=[^a-z]*[a-z])(?=[^A-Z]*[A-Z])(?=\D*\d)(?=.*?[!#%])[A-Za-z0-9!#%]{8,32}$
I ended up with the following regex:
^(?=[^a-z]*[a-z])(?=[^A-Z]*[A-Z])(?=\D*\d)(?=.*?[\!\#\@\$\%\&\/\(\)\=\?\*\-\+\-\_\.\:\;\,\]\[\{\}\^])[A-Za-z0-9\!\#\@\$\%\&\/\(\)\=\?\*\-\+\-\_\.\:\;\,\]\[\{\}\^]{8,60}$
Thanks again Unihedron and skamazin. Appreciated!
回答1:
Use this regex:
/^(?=[^a-z]*[a-z])(?=[^A-Z]*[A-Z])(?=\D*\d)(?=[^!#%]*[!#%])[A-Za-z0-9!#%]{8,32}$/
Here is a regex demo!
Read more:
- Regex for existence of some words whose order doesn't matter
回答2:
Test your possible passwords on this and see if they give you the proper result
The regex I used is:
^(?=.*[a-z])(?=.*[A-Z])(?=.*?[0-9])(?=.*?[!#%])[A-Za-z0-9!#%]{8,32}$
来源：https://stackoverflow.com/questions/25411819/regex-regular-expression-for-password-validation