Jackson Config (DateTime 표시형식 설정)

JacksonConfig.java

import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.ZonedDateTimeSerializer;
import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.time.format.DateTimeFormatter;
import java.util.TimeZone;

@Configuration
public class JacksonConfig {

    private static final String dateFormat = "yyyy-MM-dd";
    private static final String dateTimeFormat = "yyyy-MM-dd HH:mm:ss";
    private static final String timeZone = "Asia/Seoul";

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jsonCustomizer() {
        return builder -> {
            builder.simpleDateFormat(dateTimeFormat);
            builder.serializers(new LocalDateSerializer(DateTimeFormatter.ofPattern(dateFormat)));
            builder.serializers(new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(dateTimeFormat)));
            builder.serializers(new ZonedDateTimeSerializer(DateTimeFormatter.ofPattern(dateTimeFormat)));
            builder.timeZone(TimeZone.getTimeZone(timeZone));
        };
    }

}