Java validation add constraint for only set of string values

Question

Using java validation is it possible to add constrains for a string property like it should have only some set of values. (for ex : AA,BB,CC,DD). I know I can use something like below, but it does not stop some junk values apart from my expected values.

The below code, allow me junk/unexpected values

@Size(min=2, max=2,message="")
@pattern("regex patter to allow string only)
private String prop;

For a set of values with defined possible values, use an `enum` — Bohemian, Dec 11 '18 at 06:05
Whose implementation of the Bean Validation API are you using? Hibernate? — rorschach, Dec 11 '18 at 06:07
Seems like a duplicate of https://stackoverflow.com/questions/17481029/pattern-for-alphanumeric-string-bean-validation — vivek g, Dec 11 '18 at 06:11
What have you tried and can you give an example of "junk values" that slip through? — Joakim Danielson, Dec 11 '18 at 07:09

score 2 · Accepted Answer · answered Dec 11 '18 at 06:11

2

@Pattern(regexp = "word1|word2|word3")
String name;

If you need more elaborated regexp use the one you need in the usual way.

answered Dec 11 '18 at 06:11

Paco Abato

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Java validation add constraint for only set of string values

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