- 优化订单列表返回结构

common/common-framework/src/main/java/cn/iocoder/common/framework/util/CollectionUtil.java

@@ -1,9 +1,9 @@
 package cn.iocoder.common.framework.util;
 
-import java.util.Arrays;
+import org.springframework.util.ReflectionUtils;
-import java.util.Collection;
+
-import java.util.HashSet;
+import java.lang.reflect.Field;
-import java.util.Set;
+import java.util.*;
 
 public class CollectionUtil {
 
@@ -15,4 +15,53 @@ public class CollectionUtil {
         return new HashSet<>(Arrays.asList(objs));
     }
 
+
+    /**
+     * 创建指定属性为KEY, objs的每个元素为值的Multimap的Map集合。
+     *
+     * @param objs     数组
+     * @param keyClazz 值类型，即{@code property}的类型
+     * @param valClazz 值类型
+     * @param property 属性名
+     * @param <K>      泛型
+     * @param <V>      泛型
+     * @return 指定属性的Map集合
+     */
+    @SuppressWarnings("unchecked")
+    public static <K, V> Map<K, List<V>> buildMultimap(List<V> objs, Class<K> keyClazz, Class<V> valClazz,
+                                                       String property) {
+        if (objs.isEmpty()) {
+            return Collections.EMPTY_MAP;
+        }
+        Map<K, List<V>> results = new HashMap<>(objs.size());
+        try {
+            Field field = getField(objs, property);
+            for (V obj : objs) {
+                K key = (K) field.get(obj);
+                List<V> value = results.get(key);
+                if (value == null) {
+                    results.put(key, value = new ArrayList<>());
+                }
+                value.add(obj);
+            }
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+        return results;
+    }
+
+    /**
+     * 获取 object 属性 field
+     *
+     * @param objs     对象数组
+     * @param property 属性
+     * @return 对象元素里的指定属性Field, 并设置该field可以被访问
+     */
+    public static Field getField(List<?> objs, String property) {
+        Field field = ReflectionUtils.findField(objs.get(0).getClass(), property);
+        if (!field.isAccessible()) {
+            field.setAccessible(true);
+        }
+        return field;
+    }
 }

order/order-service-api/src/main/java/cn/iocoder/mall/order/api/dto/OrderBO.java

@@ -2,6 +2,7 @@ package cn.iocoder.mall.order.api.dto;
 
 import java.io.Serializable;
 import java.util.Date;
+import java.util.List;
 
 /**
  * 订单 page
@@ -79,9 +80,17 @@ public class OrderBO implements Serializable {
      */
     private String remark;
 
+    ///
+    /// 关联信息
+
+    /**
+     * orderItem
+     */
+    private List<OrderItemBO> orderItems;
+
     @Override
     public String toString() {
-        return "OrderPageBO{" +
+        return "OrderBO{" +
                 "id=" + id +
                 ", userId=" + userId +
                 ", orderLogisticsId=" + orderLogisticsId +
@@ -94,6 +103,7 @@ public class OrderBO implements Serializable {
                 ", hasReturnExchange=" + hasReturnExchange +
                 ", status=" + status +
                 ", remark='" + remark + '\'' +
+                ", orderItems=" + orderItems +
                 '}';
     }
 
@@ -204,4 +214,13 @@ public class OrderBO implements Serializable {
         this.remark = remark;
         return this;
     }
+
+    public List<OrderItemBO> getOrderItems() {
+        return orderItems;
+    }
+
+    public OrderBO setOrderItems(List<OrderItemBO> orderItems) {
+        this.orderItems = orderItems;
+        return this;
+    }
 }

order/order-service-api/src/main/java/cn/iocoder/mall/order/api/dto/OrderItemBO.java

@@ -0,0 +1,207 @@
+package cn.iocoder.mall.order.api.dto;
+
+import java.io.Serializable;
+import java.util.Date;
+
+/**
+ * 订单 item
+ *
+ * @author Sin
+ * @time 2019-03-28 21:11
+ */
+public class OrderItemBO implements Serializable {
+
+    /**
+     * 编号
+     */
+    private Integer id;
+    /**
+     * 订单编号
+     */
+    private Integer orderId;
+    /**
+     * 订单号
+     */
+    private String orderNo;
+    /**
+     * 商品编号
+     */
+    private Integer skuId;
+    /**
+     * 数量
+     */
+    private Integer quantity;
+    /**
+     * 金额(分)
+     */
+    private Integer price;
+
+    ///
+    /// 时间信息
+
+    /**
+     * 付款时间
+     */
+    private Date paymentTime;
+    /**
+     * 发货时间
+     */
+    private Date deliveryTime;
+    /**
+     * 收货时间
+     */
+    private Date receiverTime;
+    /**
+     * 成交时间
+     */
+    private Date closingTime;
+
+    ///
+    /// 其他
+
+    /**
+     * 是否退货
+     *
+     * - 1、没有
+     * - 2、换货
+     * - 3、退货
+     * - 4、换货 + 退货
+     */
+    private Integer hasReturnExchange;
+    /**
+     * 状态
+     *
+     * - 1、待付款
+     * - 2、待发货
+     * - 3、已发货
+     * - 4、已完成
+     * - 5、已关闭
+     */
+    private Integer status;
+
+    @Override
+    public String toString() {
+        return "OrderItemDO{" +
+                "id=" + id +
+                ", orderId=" + orderId +
+                ", orderNo='" + orderNo + '\'' +
+                ", skuId='" + skuId + '\'' +
+                ", quantity=" + quantity +
+                ", price=" + price +
+                ", paymentTime=" + paymentTime +
+                ", deliveryTime=" + deliveryTime +
+                ", receiverTime=" + receiverTime +
+                ", closingTime=" + closingTime +
+                ", hasReturnExchange=" + hasReturnExchange +
+                ", status=" + status +
+                '}';
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public OrderItemBO setId(Integer id) {
+        this.id = id;
+        return this;
+    }
+
+    public Integer getOrderId() {
+        return orderId;
+    }
+
+    public OrderItemBO setOrderId(Integer orderId) {
+        this.orderId = orderId;
+        return this;
+    }
+
+    public String getOrderNo() {
+        return orderNo;
+    }
+
+    public OrderItemBO setOrderNo(String orderNo) {
+        this.orderNo = orderNo;
+        return this;
+    }
+
+    public Integer getSkuId() {
+        return skuId;
+    }
+
+    public OrderItemBO setSkuId(Integer skuId) {
+        this.skuId = skuId;
+        return this;
+    }
+
+    public Integer getQuantity() {
+        return quantity;
+    }
+
+    public OrderItemBO setQuantity(Integer quantity) {
+        this.quantity = quantity;
+        return this;
+    }
+
+    public Integer getPrice() {
+        return price;
+    }
+
+    public OrderItemBO setPrice(Integer price) {
+        this.price = price;
+        return this;
+    }
+
+    public Date getPaymentTime() {
+        return paymentTime;
+    }
+
+    public OrderItemBO setPaymentTime(Date paymentTime) {
+        this.paymentTime = paymentTime;
+        return this;
+    }
+
+    public Date getDeliveryTime() {
+        return deliveryTime;
+    }
+
+    public OrderItemBO setDeliveryTime(Date deliveryTime) {
+        this.deliveryTime = deliveryTime;
+        return this;
+    }
+
+    public Date getReceiverTime() {
+        return receiverTime;
+    }
+
+    public OrderItemBO setReceiverTime(Date receiverTime) {
+        this.receiverTime = receiverTime;
+        return this;
+    }
+
+    public Date getClosingTime() {
+        return closingTime;
+    }
+
+    public OrderItemBO setClosingTime(Date closingTime) {
+        this.closingTime = closingTime;
+        return this;
+    }
+
+    public Integer getHasReturnExchange() {
+        return hasReturnExchange;
+    }
+
+    public OrderItemBO setHasReturnExchange(Integer hasReturnExchange) {
+        this.hasReturnExchange = hasReturnExchange;
+        return this;
+    }
+
+    public Integer getStatus() {
+        return status;
+    }
+
+    public OrderItemBO setStatus(Integer status) {
+        this.status = status;
+        return this;
+    }
+}

order/order-service-impl/src/main/java/cn/iocoder/mall/order/application/convert/OrderItemConvert.java

@@ -1,8 +1,10 @@
 package cn.iocoder.mall.order.application.convert;
 
 import cn.iocoder.mall.order.api.dto.OrderCreateItemDTO;
+import cn.iocoder.mall.order.api.dto.OrderItemBO;
 import cn.iocoder.mall.order.api.dto.OrderItemUpdateDTO;
 import cn.iocoder.mall.order.dataobject.OrderItemDO;
+import org.mapstruct.Mapper;
 import org.mapstruct.Mappings;
 import org.mapstruct.factory.Mappers;
 
@@ -14,6 +16,7 @@ import java.util.List;
  * @author Sin
  * @time 2019-03-23 14:34
  */
+@Mapper
 public interface OrderItemConvert {
 
     OrderItemConvert INSTANCE = Mappers.getMapper(OrderItemConvert.class);
@@ -23,4 +26,7 @@ public interface OrderItemConvert {
 
     @Mappings({})
     List<OrderItemDO> convert(List<OrderCreateItemDTO> orderCreateItemDTOList);
+
+    @Mappings({})
+    List<OrderItemBO> convertOrderItemDO(List<OrderItemDO> orderItemDOList);
 }

order/order-service-impl/src/main/java/cn/iocoder/mall/order/application/convert/OrderLogisticsConvert.java

@@ -3,6 +3,7 @@ package cn.iocoder.mall.order.application.convert;
 import cn.iocoder.mall.order.api.dto.OrderCreateDTO;
 import cn.iocoder.mall.order.api.dto.OrderLogisticsUpdateDTO;
 import cn.iocoder.mall.order.dataobject.OrderLogisticsDO;
+import org.mapstruct.Mapper;
 import org.mapstruct.Mappings;
 import org.mapstruct.factory.Mappers;
 
@@ -12,6 +13,7 @@ import org.mapstruct.factory.Mappers;
  * @author Sin
  * @time 2019-03-23 14:39
  */
+@Mapper
 public interface OrderLogisticsConvert {
 
     OrderLogisticsConvert INSTANCE = Mappers.getMapper(OrderLogisticsConvert.class);

order/order-service-impl/src/main/java/cn/iocoder/mall/order/dao/OrderItemMapper.java

@@ -5,6 +5,7 @@ import org.apache.ibatis.annotations.Param;
 import org.springframework.stereotype.Repository;
 
 import javax.validation.constraints.NotNull;
+import java.util.Collection;
 import java.util.List;
 
 /**
@@ -41,6 +42,18 @@ public interface OrderItemMapper {
             OrderItemDO orderItemDO
     );
 
+    /**
+     * 查询 - 根据 orderIds 和 status
+     *
+     * @param orderIds
+     * @param status
+     * @return
+     */
+    List<OrderItemDO> selectByOrderIdsAndStatus(
+            @Param("orderIds") Collection<Integer> orderIds,
+            @Param("status") Integer status
+    );
+
     /**
      * 查询 - 根据 orderId 下的 item
      *

order/order-service-impl/src/main/java/cn/iocoder/mall/order/service/OrderServiceImpl.java

@@ -1,6 +1,7 @@
 package cn.iocoder.mall.order.service;
 
 import cn.iocoder.common.framework.constant.DeletedStatusEnum;
+import cn.iocoder.common.framework.util.CollectionUtil;
 import cn.iocoder.common.framework.util.ServiceExceptionUtil;
 import cn.iocoder.common.framework.vo.CommonResult;
 import cn.iocoder.mall.order.OrderCommon;
@@ -53,13 +54,33 @@ public class OrderServiceImpl implements OrderService {
             return CommonResult.success(new OrderPageBO().setTotal(0));
         }
 
+        // 获取订单数据
         List<OrderDO> orderDOList = orderMapper.selectPage(orderQueryDTO);
+
+        // 获取订单 id
+        Set<Integer> orderIds = orderDOList.stream().map(orderDO -> orderDO.getId()).collect(Collectors.toSet());
+
+        // 获取 订单的 items
+        List<OrderItemDO> orderItemDOList = orderItemMapper
+                .selectByOrderIdsAndStatus(orderIds, DeletedStatusEnum.DELETED_NO.getValue());
+
+        List<OrderItemBO> orderItemBOList = OrderItemConvert.INSTANCE.convertOrderItemDO(orderItemDOList);
+        Map<Integer, List<OrderItemBO>> orderItemBOMultimap = CollectionUtil
+                .buildMultimap(orderItemBOList, Integer.class, OrderItemBO.class, "orderId");
+
+        // 转换 orderDO 为 OrderBO，并设置 item
         List<OrderBO> orderPageBOList = OrderConvert.INSTANCE.convertPageBO(orderDOList);
+        List<OrderBO> result = orderPageBOList.stream().map(orderBO -> {
+            if (orderItemBOMultimap.containsKey(orderBO.getId())) {
+                orderBO.setOrderItems(orderItemBOMultimap.get(orderBO.getId()));
+            }
+            return orderBO;
+        }).collect(Collectors.toList());
 
         return CommonResult.success(
                 new OrderPageBO()
                         .setTotal(totalCount)
-                        .setOrders(orderPageBOList)
+                        .setOrders(result)
         );
     }
 

order/order-service-impl/src/main/resources/mapper/OrderItemMapper.xml

@@ -110,4 +110,17 @@
           AND order_id = #{orderId}
         </if>
     </select>
+
+    <!--
+        查询 - 根据 orderIds 和 status
+    -->
+    <select id="selectByOrderIdsAndStatus" resultType="cn.iocoder.mall.order.dataobject.OrderItemDO">
+        SELECT * FROM `order_item`
+        WHERE `status` = #{status}
+        AND `order_id`
+        IN
+        <foreach collection="orderIds" index="orderId" open="(" close=")" separator=",">
+          #{orderId}
+        </foreach>
+    </select>
 </mapper>