Mapper.xml一对一&一对多混合封装

@TableName("tb_order")
@Data
@Accessors(chain=true)
public class Order extends BasePojo{
  @TableField(exist=false)  //入库操作忽略该字段
  private OrderShipping orderShipping;//订单物流信息 一对一
                
  @TableField(exist=false)  //入库操作忽略该字段
  private List<OrderItem> orderItems;  //封装订单商品信息  一对多
  
  /**
   * orderId不是主键自增,使用uuid
   */
  @TableId
    private String orderId;
    private String payment;
    private Integer paymentType;
    private String postFee;
    private Integer status; //状态：1、未付款2、已付款3、未发货4、已发货5、交易成功6、交易关闭
    private Date paymentTime;
    private Date consignTime;
    private Date endTime;
    private Date closeTime;
    private String shippingName;
    private String shippingCode;
    private Long userId;
    private String buyerMessage;
    private String buyerNick;
    private Integer buyerRate;
}

@TableName("tb_order_shipping")
@Data
@Accessors(chain=true)
public class OrderShipping extends BasePojo{
  
  @TableId
    private String orderId;
    private String receiverName;
    private String receiverPhone;
    private String receiverMobile;
    private String receiverState;
    private String receiverCity;
    private String receiverDistrict;
    private String receiverAddress;
    private String receiverZip;
    
}

@TableName("tb_order_item")
@Data
@Accessors(chain=true)
public class OrderItem extends BasePojo{
  
  @TableId
    private String itemId;
  
  @TableId  
    private String orderId;
    private Integer num;
    private String title;
    private Long price;
    private Long totalFee;
    private String picPath;
}