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Java Validation

repositoryrestconfigureradapter is deprecated and...

In the RestConfig.java:

import org.springframework.context.annotation.Configuration;
import org.springframework.data.rest.core.event.ValidatingRepositoryEventListener;
import org.springframework.data.rest.webmvc.config.RepositoryRestConfigurer;
import org.springframework.validation.Validator;

public class RestConfig implements RepositoryRestConfigurer {

    private final Validator validator;

    public RestConfig(Validator validator) {
        this.validator = validator;

    public void configureValidatingRepositoryEventListener(ValidatingRepositoryEventListener validatingListener) {
        validatingListener.addValidator("beforeCreate", validator);
        validatingListener.addValidator("beforeSave", validator);


In the build.gradle add to dependencies:

implementation 'org.springframework.boot:spring-boot-starter-validation'