Java Regex Matching And Hibernate Validators

Question

I am using Hibernate validators on my form and am running into this problem. The validators are as follows:

@NotEmpty(message = "Firstname cannot be empty")
@Pattern(regexp = "^[a-zA-Z0-9_]+$", message = "First Name can only contain characters.")
private String firstname;

If the firstname is empty both @NotEmpty as well as @Pattern are getting triggered.

Question

How do I make @NotEmpty trigger ONLY when the firstname is empty and @Pattern trigger ONLY when it contains illegal characters like '#' or '&'?

Just a nitpick, you can reduce that regexp to ^\w+$.

tenub
– tenub

2014-03-17 18:11:21 +00:00
Commented Mar 17, 2014 at 18:11 — tenub
– tenub, Commented Mar 17, 2014 at 18:11

donfuxx · Accepted Answer · 2014-03-17 18:17:45Z

1

Try:

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

Instead of:

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

The * should make your regex also match the empty String. So for the case the String is empty only @NotEmpty should be triggered

answered Mar 17, 2014 at 18:17

donfuxx

11.3k6 gold badges48 silver badges78 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Java Regex Matching And Hibernate Validators

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related