MapStruct 설정

Gradle 설정

• lombok 과 함께 사용할 경우 annotationProcessor에 lombok 설정을 추가해 주어야 한다

ext {
    mapstructVersion = "1.4.2.Final"
    lombokVersion = "1.18.20"
    lombokMapstructBindingVersion = "0.2.0"
}

dependencies {
    implementation "org.mapstruct:mapstruct:${mapstructVersion}", "org.projectlombok:lombok:${lombokVersion}"
    annotationProcessor "org.mapstruct:mapstruct-processor:${mapstructVersion}", "org.projectlombok:lombok:${lombokVersion}", "org.projectlombok:lombok-mapstruct-binding:${lombokMapstructBindingVersion}"
}

---

Mapper interface

• Interface를 통해 소스코드가 생성된다
• Source

// source
@Data
public class Source {

    private String test;

}

---

// target source
@Getter
@Setter
public class Target {

    private Long testing;

}

---

// mapper source
@Mapper
public interface SourceTargetMapper {

    SourceTargetMapper MAPPER = Mappers.getMapper( SourceTargetMapper.class );

    @Mapping( source = "test", target = "testing" )
    Target toTarget( Source s );
}

---

Mapper 사용하기

public class Main {

    public static void main( String[] args ) {
        Source s = new Source();
        s.setTest( "5" );

        Target t = SourceTargetMapper.MAPPER.toTarget( s );
        System.out.println( t.getTesting() );
    }
}

---

Reference

• 성능 비교 문서 : https://www.baeldung.com/java-performance-mapping-frameworks
• github : https://github.com/mapstruct/mapstruct-examples/tree/master/mapstruct-lombok
• 공식문서 : https://mapstruct.org/documentation/stable/reference/html/

MapStruct 1.4.2.Final Reference Guide