How to read the regex pattern from property file in spring boot

Question

@Pattern(regexp = "{A-Za-z0-9}*")
private String name;

Above regex, I want to read from the property file

"${your.config.key:-default value}". Have you tried that and it does not work or haven't you tried it and don't know about it? — knittl
– knittl, Commented Jan 3, 2020 at 16:33
@knittl I tried several times without success, IntelliJ put a red highlight after '${' with the message "Number expected" — DonFabiolas
– DonFabiolas, Commented May 10, 2022 at 13:28

Ivan Kaloyanov · Accepted Answer · 2020-01-03 16:34:52Z

1

This is possible from Spring 3.0.1 afterwords. You can do it like a regular property value binding. Inside your application.yml

my:
  regex:
    charOrNumber: '{A-Za-z0-9}*'

And then in your Java class:

@Pattern(regexp = "${my.regex.charOrNumber}")

answered Jan 3, 2020 at 16:34

Ivan Kaloyanov

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2 Comments

I tried several times without success, IntelliJ put a red highlight after '${' with the message "Number expected"