练习：将值是null的数据删除掉（剔除）:com.fasterxml.jackson.annotation.JsonInclude;包

练习：将值是null的数据删除掉（剔除）:com.fasterxml.jackson.annotation.JsonInclude;包

例如，有数据是null，不想展示

{
  "statusCode": 0,
  "message": "返回成功",
  "data": [{
    "orderId": "1542785381425923730",
    "buyerName": "王五",
    "buyerPhone": "15605852476",
    "buyerAddr": "北京王府井",
    "buyerOpenid": "110112",
    "buyerAmount": 4.40,
    "orderStatus": 0,
    "payStatus": 0,
    "createTimestamp": 1542794276000,
    "updateTimestamp": 1542794276000,
    "orderDetailList": null
  }]
}

　　

解决方法：

在输出格式的entity/vo/dto添加com.fasterxml.jackson.annotation.JsonInclude;包的注解

@JsonInclude(JsonInclude.Include.NON_NULL)

/**订单*/
@Data //get/set
//将值是null的数据剔除
@JsonInclude(JsonInclude.Include.NON_NULL)
public class OrderDTO {

    private String orderId;

    /**买家名字**/
    private String buyerName;

    /**买家手机**/
    private String buyerPhone;

    /**买家地址**/
    private String buyerAddr;

    /**用户openid**/
    private String buyerOpenid;

    /**订单金额**/
    private BigDecimal buyerAmount;

    /**订单状态, 默认状态0新订单**/
    private Integer orderStatus;

    /**支付状态, 默认状态0等待支付**/
    private Integer payStatus;

    private Date createTimestamp;

    private Date updateTimestamp;

    List<OrderDetail> orderDetailList;

}