인프런 커뮤니티 질문&답변

@Value를 적용한 필드에 @Min(1) 과 같은 검증을 적용할 수는 없을까요?

아래 소스코드처럼 작성해 MyDataSourceValueConfig를 빈으로 등록하면 @Validated가 동작해 검증될 줄 알았는데 적용되지 않습니다. 원인이 무엇인지 궁금합니다...

(코드 내 $가 포함되면 이상하게 동작해,

$를 #로 변경하였습니다.)

package hello.datasource;

import hello.datasource.MyDataSource;
import jakarta.validation.constraints.Min;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.validation.annotation.Validated;

import java.time.Duration;
import java.util.List;

@Slf4j
@Configuration
@Validated
public class MyDataSourceValueConfig {

    @Value(“#{my.datasource.url}")
    private String url;
    @Value(“#{my.datasource.username}")
    private String username;
    @Value(“#{my.datasource.password}")
    private String password;
    @Value(“#{my.datasource.etc.max-connection}")
    @Min(1)
    private int maxConnection;
    @Value(“#{my.datasource.etc.timeout}")
    private Duration timeout;
    @Value(“#{my.datasource.etc.options}")
    private List<String> options;

    @Bean
    @Validated
    public MyDataSource myDataSource1() {
        return new MyDataSource(url, username, password, maxConnection, timeout, options);
    }

    @Bean
    public MyDataSource myDataSource2(
        @Value(“#{my.datasource.url}") String url,
        @Value(“#{my.datasource.username}") String username,
        @Value(“#{my.datasource.password}") String password,
        @Value(“#{my.datasource.etc.max-connection}") int maxConnection,
        @Value(“#{my.datasource.etc.timeout}") Duration timeout,
        @Value(“#{my.datasource.etc.options}") List<String> options
    ) {
        return new MyDataSource(url, username, password, maxConnection, timeout, options);
    }
}