小编Dav*_*ave的帖子

考虑以下 POJO：

public class PersonVo {
    private String firstName;
    private String lastName;
}

private class PersonEntity {
    private String fullName;
}

使用 MapStruct，我想创建映射PersonVo到PersonEntity.
我需要映射多个源字段firstName，lastName一个目标归档fullName。

这是我想要的伪代码。

[想要解决方案A]

@Mapper
public interface PersonMapper {
    @Mapping(target = "fullName", source = {"firstName", "lastName"}, qualifiedByName="toFullName")
    PersonEntity toEntity(PersonVo person);

    @Named("toFullName")
    String translateToFullName(String firstName, String lastName) {
        return firstName + lastName;
    }
}

[想要解决方案B]

@Mapper
public interface PersonMapper {
    @Mapping(target = "fullName", source = PersonVo.class, qualifiedByName="toFullName")
    PersonEntity toEntity(PersonVo …