Spring Boot项目中VO层设计：选择继承或组合的灵活实践

// 实体类
public class Goods {
    private Long id;
    private String name;
    private BigDecimal price;
    private String description;
    // 其他属性和方法...
}

// VO类通过组合实现
public class GoodsVO {
    private Long id;
    private String name;
    private BigDecimal price;

    // 构造方法或工厂方法，将实体类转换为VO类
    public GoodsVO(Goods goods) {
        this.id = goods.getId();
        this.name = goods.getName();
        this.price = goods.getPrice();
    }

    // Getter 和 Setter 方法...
}

// VO类通过继承实现
public class GoodsVO extends Goods {
    // 新增或覆盖需要展示的属性
    private String displayInfo;

    // 构造方法或工厂方法，将实体类转换为VO类
    public GoodsVO(Goods goods) {
        // 调用父类构造方法，复制基本属性
        super.setId(goods.getId());
        super.setName(goods.getName());
        super.setPrice(goods.getPrice());
        super.setDescription(goods.getDescription());

        // 初始化VO类特有的属性
        this.displayInfo = "Additional information for display";
    }

    // Getter 和 Setter 方法...
}

// 使用ModelMapper进行对象映射
ModelMapper modelMapper = new ModelMapper();
GoodsVO goodsVO = modelMapper.map(goods, GoodsVO.class);