Java中的MapStruct实现详解

<dependency>
 <groupId>org.mapstruct</groupId>
 <artifactId>mapstruct-jdk8</artifactId>
 <version>1.3.0.Final</version>
</dependency>
//注解处理器，根据注解自动生成mapper的实现
<dependency>
 <groupId>org.mapstruct</groupId>
 <artifactId>mapstruct-processor</artifactId>
 <version>1.2.0.Final</version>
</dependency>

@NoArgsConstructor
@AllArgsConstructor
@Data
public class Car {
    private String make;
    private int numberOfSeats;
    private CarType type;
}

@Data
@NoArgsConstructor
@AllArgsConstructor
public class CarDto {
    private String make;
    private int seatCount;
    private String type;

}

@Mapper
public interface CarMapper {
 
    CarMapper INSTANCE = Mappers.getMapper( CarMapper.class );

    @Mapping(source = "numberOfSeats", target = "seatCount")
    CarDto carToCarDto(Car car); 
   
}

@Test
public void shouldMapCarToDto() {

    Car car = new Car( "Morris", 5, CarType.SEDAN );
    CarDto carDto = CarMapper.INSTANCE.carToCarDto( car );
    System.out.println(carDto);
    
}