MapStruct 代替BeanUtil

这篇博文不错:https://www.cnblogs.com/tanoak/articles/10302299.html

1.pom.xml配置

 <dependency>
            <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct-jdk8</artifactId>
            <version>1.2.0.Final</version>
        </dependency>  

<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.5.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <annotationProcessorPaths>
                        <path>
                            <groupId>org.mapstruct</groupId>
                            <artifactId>mapstruct-processor</artifactId>
                            <version>1.2.0.Final</version>
                        </path>
                        <path>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                            <version>1.18.10</version>
                        </path>
                    </annotationProcessorPaths>
                </configuration>
            </plugin>

2.java实体代码

@Data
public class CarDto {

    private String make;
    private int seatCount;
    private String type;
}


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

3.定义一个mapper接口，里面做实体装换

@Mapper
public interface CarMapper {

    CarMapper INSTANCE = Mappers.getMapper(CarMapper.class);

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

}

4.最后测试代码

public class Test {

    public static void main(String[] args) {
        Car car = new Car( "Morris", 120 );
        //转换对象
        CarDto carDto = CarMapper.INSTANCE.carToCarDto( car );

        //测试
        System.out.println( carDto );
        System.out.println( carDto.getMake() );
        System.out.println( carDto.getSeatCount() );
        System.out.println(carDto.getType());
    }
}

还有其他高级用法....