无法用Mapstruct生成没有输入参数的映射方法

Question

我正在使用Mapstruct映射器开始我的第一步。我想把一个JPA数据实体类映射到一个DTO类。这是我的源类：

@Entity
@Data
@Table(name = "projects")
public class Project {
    @Id
    private Long Id;
    private String projectName;
    private String description;

    @OneToMany(mappedBy = "project")
    List<Sprint> sprints;

    @OneToMany(mappedBy = "project")
    List<Epic> epics;

    @OneToMany(mappedBy = "project")
    List<Story> stories;

    public Project(Long id, String projectName, String description) {
        Id = id;
        this.projectName = projectName;
        this.description = description;
    }
}

这是我的目标类：

@Data
@AllArgsConstructor
public class ProjectDTO {
    private Long Id;
    private String projectName;
    private String description;
}

@Mapper
public interface ProjectMapper extends Mapper {

    ProjectMapper INSTANCE = Mappers.getMapper(ProjectMapper.class)

    ProjectDTO projectToProjectDTO(Project project);
}

@Mapping(source=“sprints”, target= null)

任何帮助都将不胜感激！

Answer 1

还添加'@noargconstructor'。MapStruct还不能处理通过构造函数构造对象的问题。另一个选择是使用'@builder'代替，如果您的对象确实是不可变的