update cancel order

src/main/java/cn/edu/ecnu/stu/bookstore/mapper/OrderMapper.java

@@ -2,6 +2,7 @@ package cn.edu.ecnu.stu.bookstore.mapper;
 
 import cn.edu.ecnu.stu.bookstore.pojo.Book;
 import cn.edu.ecnu.stu.bookstore.pojo.Order;
+import cn.edu.ecnu.stu.bookstore.pojo.OrderBookDO;
 import cn.edu.ecnu.stu.bookstore.pojo.OrderStatus;
 import org.apache.ibatis.annotations.*;
 
@@ -30,4 +31,7 @@ public interface OrderMapper {
     int checkOrder(@Param("orderId") String orderId, @Param("buyerId") Integer buyerId);
 
     int selectStatus(@Param("orderId") String orderId);
+
+    @Select("select order_id, bookId, count, single_price from t_order_book where order_id = #{orderId}")
+    List<OrderBookDO> getBookListByOrder(@Param("orderId") String orderId);
 }

src/main/java/cn/edu/ecnu/stu/bookstore/pojo/OrderBookDO.java

@@ -0,0 +1,21 @@
+package cn.edu.ecnu.stu.bookstore.pojo;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.math.BigDecimal;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class OrderBookDO {
+
+    private String orderId;
+
+    private String bookId;
+
+    private Integer count;
+
+    private BigDecimal singlePrice;
+}

src/main/java/cn/edu/ecnu/stu/bookstore/service/impl/OrderService.java

@@ -2,13 +2,17 @@ package cn.edu.ecnu.stu.bookstore.service.impl;
 
 import cn.edu.ecnu.stu.bookstore.component.AppException;
 import cn.edu.ecnu.stu.bookstore.component.Constants;
+import cn.edu.ecnu.stu.bookstore.mapper.BookMapper;
 import cn.edu.ecnu.stu.bookstore.mapper.OrderMapper;
 import cn.edu.ecnu.stu.bookstore.pojo.Order;
+import cn.edu.ecnu.stu.bookstore.pojo.OrderBookDO;
 import cn.edu.ecnu.stu.bookstore.pojo.OrderStatus;
 import cn.edu.ecnu.stu.bookstore.pojo.User;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.bind.annotation.RequestParam;
 
 import java.util.List;
@@ -19,6 +23,13 @@ public class OrderService {
     @Autowired
     private OrderMapper orderMapper;
 
+    @Autowired
+    @Lazy
+    private OrderService orderService;
+
+    @Autowired
+    private BookMapper bookMapper;
+
     public List<Order> getOrderList(Integer status) {
         User user = (User) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
         return orderMapper.select(user.getId(), status == null ? null : OrderStatus.getByValue(status));
@@ -28,7 +39,19 @@ public class OrderService {
         User user = (User) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
         if(orderMapper.checkOrder(orderId, user.getId()) != 1)
             throw new AppException(Constants.CLIENT_ERROR, Constants.AUTHORITY_ERROR);
+        Order order = orderMapper.selectById(orderId);
+        List<OrderBookDO> books = orderMapper.getBookListByOrder(orderId);
+        orderService.updateOrderAndStockLevel(order, books);
+    }
+
+    @Transactional
+    public void updateOrderAndStockLevel(Order order, List<OrderBookDO> books) {
+        String orderId = order.getOrderId();
+        String storeId = order.getStoreId();
         orderMapper.updateOrderStatus(orderId, OrderStatus.CANCEL);
+        for (OrderBookDO book : books) {
+            bookMapper.addStockLevel(storeId, book.getBookId(), book.getCount());
+        }
     }
 
     public void add(Order order) {