JacksonConfig.java

package roomescape.config;

import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer;
import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.time.format.DateTimeFormatter;

@Configuration
public class JacksonConfig {

    private static final DateTimeFormatter TIME_FORMAT = DateTimeFormatter.ofPattern("HH:mm");

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer timeFormatCustomizer() {
        return builder -> {
            builder.serializers(new LocalTimeSerializer(TIME_FORMAT));
            builder.deserializers(new LocalTimeDeserializer(TIME_FORMAT));
        };
    }
}