CODEWITHSUNDEEP
regexspringspring-boot
user14243511
user14243511

Reputation:

how to validate with regex input field in spring boot

i'm trying to do a validation of only positive numbers inside the request in spring boot

Public ResponseEntity getId(@RequestParam(value =“idPer”)@Pattern(regexp=“^[0-9]*$”),message = “the value is negative”)
@NotNull(message = “the value is empty ”) Long idPer){
}

in my exceptionhandler I get this exception

no validator could be found for constraint 'javax.validation.constraints.pattern' validatingtype long

I have the @validated above my controller class

what am I doing wrong?

Upvotes: 5

Views: 17100

Answers (1)

anubhava
anubhava

Reputation: 785196

Check documentation of @Pattern. It is applicable to CharSequence i.e. String bur not allowed for Long which is what you are using in your method.

You may refactor your code like this:

public ResponseEntity getId (
        @Pattern(regexp="^[0-9]+$", message="the value must be positive integer")
        @RequestParam("idPer") final String idPerStr) {

    Long idPer = Long.valueOf(idPerStr);
    // rest of your handler here
}

Also note that @NotNull is not required because we are using + quantifiers that allows only 1 or more digits in pattern.

Upvotes: 5

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