mybatis 一对多collection结合PageHelper分页

PageHelper分页组件

public class PageParam {
   /**
   * 当前页数
   */
   private Integer pageNum;

   /**
   * 分页显示数目
   */
   private Integer pageSize;

}

/**
   * 设置请求分页数据
   */
   protected void startPage(PageParam page) {
       if (StringUtils.isNotNull(page.getPageNum()) && StringUtils.isNotNull(page.getPageSize())) {
           PageHelper.startPage(page.getPageNum(), page.getPageSize());
       }
   }

controller

/**
   * 调货列表
   *
   * @param pageNum 当前页数
   * @param pageSize 分页数目
   * @return
   */
   @ApiOperation(value = "调货查询")
   @PostMapping("/list")
   @ResponseBody
   public TableDataInfo list(PageParam page) {
       startPage(page);
       List<RobOrders> list = robOrdersService.selectRobOrdersList();
       return getDataTable(list);
   }

/**
   * 响应请求分页数据
   */
   @SuppressWarnings({ "rawtypes", "unchecked" })
   protected TableDataInfo getDataTable(List<?> list) {
       TableDataInfo rspData = new TableDataInfo();
       rspData.setCode(0);
       rspData.setRows(list);
       rspData.setTotal(new PageInfo(list).getTotal());
       return rspData;
   }

实体类

/**
* 调货对象 rob_orders
*
* @author ruoyi
* @date 2020-05-14
*/
public class RobOrders extends BaseEntity {
private static final long serialVersionUID = 1L;

/** $column.columnComment */
private Long id;

/** 订单号 */
private String orderNum;

/** 收件人姓名 */
private String receiverName;

/** 收件人联系电话 */
private String phone;

/** 收件人省主键 */
private Integer province;

/** 收件人市主键 */
private Integer city;

/** 收件人区主键 */
private Integer area;

/** 收件人省 */
private String provinceName;

/** 收件人市 */
private String cityName;

/** 收件人区 */
private String areaName;

/** 收件人地址 */
private String address;

/** 订单状态 */
private Integer orderStatus;

/** 订单总价格 */
private Double price;

/** 是否被抢0抢单1已抢 */
private Integer isGrab;

   /** 关联sys_user的主键 */
   private Integer userId;
   /** 失效时间 */
   @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
   private Date failureTime;

   /** 支付时间 */
   @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
   private Date payTime;

/** 有效时间标识 */
private Integer timeType = 24;

/** 订单详情list */
private List<RodOrderDetail> RodOrderDetailList;

}

/**
* 调货订单详情对象 rod_order_detail
*
* @author ruoyi
* @date 2020-05-14
*/
public class RodOrderDetail extends BaseEntity {
private static final long serialVersionUID = 1L;

/** $column.columnComment */
private Integer id;

/** 订单号 */
private String orderNum;

/** 书本编号 */
private String bookId;

/** 书本isbn */
private String isbn;

/** 书本名称 */
private String title;

/** 出版社 */
private String press;

/** 作者 */
private String author;

/** 定价 */
private Double price;

/** 销售价 */
private Double salePrice;

/** 购买数量 */
private Integer count;

/** 书本备注 */
private String remake;

/** 书本备注 */
private String url;

}

service 和dao层就不写了自己写方法就行

xml:

<resultMap type="RodOrderDetail" id="RodOrderDetailResult">
   <result property="id" column="detail_id" />
       <result property="orderNum" column="detail_order_num" />
       <result property="bookId" column="book_id" />
       <result property="isbn" column="isbn" />
       <result property="title" column="title" />
       <result property="press" column="press" />
       <result property="author" column="author" />
       <result property="price" column="detail_price" />
       <result property="salePrice" column="sale_price" />
       <result property="count" column="count" />
       <result property="remake" column="remake" />
       <result property="url" column="url" />
   </resultMap>

   
<resultMap type="RobOrders" id="RobOrdersResult">
<result property="id" column="id" />
<result property="orderNum" column="order_num" />
<result property="receiverName" column="receiver_name" />
<result property="phone" column="phone" />
<result property="province" column="province" />
<result property="city" column="city" />
<result property="area" column="area" />
<result property="address" column="address" />
<result property="orderStatus" column="order_status" />
<result property="price" column="price" />
<result property="createTime" column="create_time" />
<result property="isGrab" column="is_grab" />
<result property="userId" column="user_id" />
<result property="provinceName" column="province_name" />
<result property="cityName" column="city_name" />
<result property="areaName" column="area_name" />
<result property="failureTime" column="failure_time" />
<result property="payTime" column="pay_time" />

<collection property="RodOrderDetailList" ofType="RodOrderDetailResult" javaType="java.util.List" column="order_num" select="queryRobOrderDetailByOrderNum">
       </collection>

</resultMap>

<sql id="selectRobOrdersVo">
select a.id, a.order_num, a.receiver_name, a.phone, a.province, a.city, a.area, a.address, a.order_status, a.price, a.create_time,a.is_grab, a.user_id,p.name as province_name,c.name as city_name,ar.name as area_name from rob_orders a
left join province p on p.id=a.province
left join city c on c.id=a.city
left join area ar on ar.id=a.area
</sql>


<select id="queryRobOrderDetailByOrderNum" parameterType="java.lang.String" resultMap="RodOrderDetailResult">
select b.id as detail_id, b.order_num as detail_order_num, b.book_id, b.isbn, b.title, b.press, b.author, b.price as detail_price, b.sale_price, b.count, b.remake,b.url from rod_order_detail b where b.order_num=#{orderNum}
</select>



<select id="selectRobOrdersList" resultMap="RobOrdersResult">
<include refid="selectRobOrdersVo"/>
order by a.create_time desc
</select>

mybatis 一对多collection结合PageHelper分页

猜你喜欢