秒杀（SpringBoot构建电商基础秒杀项目 基础部分完成）

Others/README.md

@@ -1,3 +1,5 @@
 MavenRepo: 不存在的Maven依赖，需要手动复制到本地Maven仓库中
 
 sql: 项目数据库文件
+
+课程：https://www.imooc.com/video/18469

Others/sql/flashsale.sql

@@ -11,7 +11,7 @@
  Target Server Version : 50726
  File Encoding         : 65001
 
- Date: 05/03/2022 15:19:32
+ Date: 05/03/2022 16:32:52
 */
 
 SET NAMES utf8mb4;
@@ -93,6 +93,7 @@ CREATE TABLE `order_info`  (
   `item_price` decimal(10, 2) NOT NULL,
   `amount` int(255) NOT NULL,
   `order_price` decimal(10, 2) NOT NULL,
+  `promo_id` int(11) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`) USING BTREE
 ) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci ROW_FORMAT = DYNAMIC;
 
@@ -114,7 +115,7 @@ CREATE TABLE `promo_info`  (
   PRIMARY KEY (`id`) USING BTREE,
   INDEX `item_id`(`item_id`) USING BTREE,
   CONSTRAINT `promo_info_ibfk_1` FOREIGN KEY (`item_id`) REFERENCES `item_info` (`id`) ON DELETE RESTRICT ON UPDATE RESTRICT
-) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Records of promo_info
@@ -135,7 +136,7 @@ CREATE TABLE `sequence_info`  (
 -- ----------------------------
 -- Records of sequence_info
 -- ----------------------------
-INSERT INTO `sequence_info` VALUES ('order_info', 0, 1);
+INSERT INTO `sequence_info` VALUES ('order_info', 5, 1);
 
 -- ----------------------------
 -- Table structure for user_info

frontend/getitem.html

@@ -108,6 +108,7 @@
                 data: {
                     "itemId": g_itemVO.id,
                     "amount": 1, // 暂时写死，买1件
+                    "promoId": g_itemVO.promoId,
                 },
                 xhrFields: {withCredentials: true},
                 success: function (data) {

src/main/java/com/cxyxiaomo/flashsale/controller/ItemController.java

@@ -82,7 +82,7 @@ public class ItemController extends BaseController {
         if (itemModel.getPromoModel() != null) {
             // 有正在进行或即将进行的秒杀活动
             itemVO.setPromoStatus(itemModel.getPromoModel().getStatus());
-            itemVO.setPromoId(itemModel.getId());
+            itemVO.setPromoId(itemModel.getPromoModel().getId());
             itemVO.setStartDate(itemModel.getPromoModel().getStartDate().toString(DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss")));
             itemVO.setPromoPrice(itemModel.getPromoModel().getPromoPrice());
         } else {

src/main/java/com/cxyxiaomo/flashsale/controller/OrderController.java

@@ -27,7 +27,8 @@ public class OrderController extends BaseController {
     @RequestMapping(value = "/createorder", method = {RequestMethod.POST}, consumes = {CONTENT_TYPE_FORMED})
     @ResponseBody
     public CommonReturnType createOrder(@RequestParam(name = "itemId") Integer itemId,
-                                        @RequestParam(name = "amount") Integer amount) throws BusinessException {
+                                        @RequestParam(name = "amount") Integer amount,
+                                        @RequestParam(name = "promoId", required = false) Integer promoId) throws BusinessException {
         // 获取用户登陆状态
         Boolean isLogin = (Boolean) httpServletRequest.getSession().getAttribute("IS_LOGIN");
         if (isLogin == null || !isLogin.booleanValue()) {
@@ -36,7 +37,7 @@ public class OrderController extends BaseController {
         // 获取用户的登录信息
         UserModel userModel = (UserModel) httpServletRequest.getSession().getAttribute("LOGIN_USER");
 
-        OrderModel orderModel = orderService.createOrder(userModel.getId(), itemId, amount);
+        OrderModel orderModel = orderService.createOrder(userModel.getId(), itemId, promoId, amount);
 
         return CommonReturnType.create(null);
     }

src/main/java/com/cxyxiaomo/flashsale/dao/OrderDOMapper.java

@@ -7,7 +7,7 @@ public interface OrderDOMapper {
      * This method was generated by MyBatis Generator.
      * This method corresponds to the database table order_info
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     int deleteByPrimaryKey(String id);
 
@@ -15,7 +15,7 @@ public interface OrderDOMapper {
      * This method was generated by MyBatis Generator.
      * This method corresponds to the database table order_info
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     int insert(OrderDO record);
 
@@ -23,7 +23,7 @@ public interface OrderDOMapper {
      * This method was generated by MyBatis Generator.
      * This method corresponds to the database table order_info
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     int insertSelective(OrderDO record);
 
@@ -31,7 +31,7 @@ public interface OrderDOMapper {
      * This method was generated by MyBatis Generator.
      * This method corresponds to the database table order_info
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     OrderDO selectByPrimaryKey(String id);
 
@@ -39,7 +39,7 @@ public interface OrderDOMapper {
      * This method was generated by MyBatis Generator.
      * This method corresponds to the database table order_info
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     int updateByPrimaryKeySelective(OrderDO record);
 
@@ -47,7 +47,7 @@ public interface OrderDOMapper {
      * This method was generated by MyBatis Generator.
      * This method corresponds to the database table order_info
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     int updateByPrimaryKey(OrderDO record);
 }

src/main/java/com/cxyxiaomo/flashsale/dataobject/OrderDO.java

@@ -8,7 +8,7 @@ public class OrderDO {
      * This field was generated by MyBatis Generator.
      * This field corresponds to the database column order_info.id
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     private String id;
 
@@ -17,7 +17,7 @@ public class OrderDO {
      * This field was generated by MyBatis Generator.
      * This field corresponds to the database column order_info.user_id
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     private Integer userId;
 
@@ -26,7 +26,7 @@ public class OrderDO {
      * This field was generated by MyBatis Generator.
      * This field corresponds to the database column order_info.item_id
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     private Integer itemId;
 
@@ -35,7 +35,7 @@ public class OrderDO {
      * This field was generated by MyBatis Generator.
      * This field corresponds to the database column order_info.item_price
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     private BigDecimal itemPrice;
 
@@ -44,7 +44,7 @@ public class OrderDO {
      * This field was generated by MyBatis Generator.
      * This field corresponds to the database column order_info.amount
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     private Integer amount;
 
@@ -53,17 +53,26 @@ public class OrderDO {
      * This field was generated by MyBatis Generator.
      * This field corresponds to the database column order_info.order_price
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     private BigDecimal orderPrice;
 
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column order_info.promo_id
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    private Integer promoId;
+
     /**
      * This method was generated by MyBatis Generator.
      * This method returns the value of the database column order_info.id
      *
      * @return the value of order_info.id
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     public String getId() {
         return id;
@@ -75,7 +84,7 @@ public class OrderDO {
      *
      * @param id the value for order_info.id
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     public void setId(String id) {
         this.id = id == null ? null : id.trim();
@@ -87,7 +96,7 @@ public class OrderDO {
      *
      * @return the value of order_info.user_id
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     public Integer getUserId() {
         return userId;
@@ -99,7 +108,7 @@ public class OrderDO {
      *
      * @param userId the value for order_info.user_id
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     public void setUserId(Integer userId) {
         this.userId = userId;
@@ -111,7 +120,7 @@ public class OrderDO {
      *
      * @return the value of order_info.item_id
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     public Integer getItemId() {
         return itemId;
@@ -123,7 +132,7 @@ public class OrderDO {
      *
      * @param itemId the value for order_info.item_id
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     public void setItemId(Integer itemId) {
         this.itemId = itemId;
@@ -135,7 +144,7 @@ public class OrderDO {
      *
      * @return the value of order_info.item_price
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     public BigDecimal getItemPrice() {
         return itemPrice;
@@ -147,7 +156,7 @@ public class OrderDO {
      *
      * @param itemPrice the value for order_info.item_price
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     public void setItemPrice(BigDecimal itemPrice) {
         this.itemPrice = itemPrice;
@@ -159,7 +168,7 @@ public class OrderDO {
      *
      * @return the value of order_info.amount
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     public Integer getAmount() {
         return amount;
@@ -171,7 +180,7 @@ public class OrderDO {
      *
      * @param amount the value for order_info.amount
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     public void setAmount(Integer amount) {
         this.amount = amount;
@@ -183,7 +192,7 @@ public class OrderDO {
      *
      * @return the value of order_info.order_price
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     public BigDecimal getOrderPrice() {
         return orderPrice;
@@ -195,9 +204,33 @@ public class OrderDO {
      *
      * @param orderPrice the value for order_info.order_price
      *
-     * @mbg.generated Thu Mar 03 22:04:45 CST 2022
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
      */
     public void setOrderPrice(BigDecimal orderPrice) {
         this.orderPrice = orderPrice;
     }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column order_info.promo_id
+     *
+     * @return the value of order_info.promo_id
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    public Integer getPromoId() {
+        return promoId;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column order_info.promo_id
+     *
+     * @param promoId the value for order_info.promo_id
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    public void setPromoId(Integer promoId) {
+        this.promoId = promoId;
+    }
 }

src/main/java/com/cxyxiaomo/flashsale/service/OrderService.java

@@ -11,5 +11,5 @@ public interface OrderService {
      * @param amount 购买商品数量
      * @return
      */
-    OrderModel createOrder(Integer userId, Integer itemId, Integer amount) throws BusinessException;
+    OrderModel createOrder(Integer userId, Integer itemId, Integer promoId, Integer amount) throws BusinessException;
 }

src/main/java/com/cxyxiaomo/flashsale/service/impl/OrderServiceImpl.java

@@ -39,7 +39,7 @@ public class OrderServiceImpl implements OrderService {
 
     @Override
     @Transactional
-    public OrderModel createOrder(Integer userId, Integer itemId, Integer amount) throws BusinessException {
+    public OrderModel createOrder(Integer userId, Integer itemId, Integer promoId, Integer amount) throws BusinessException {
         // 1. 校验下单状态
         //  下单的商品是否存在；用户是否合法；购买数量是否正确
         ItemModel itemModel = itemService.getItemById(itemId);
@@ -56,7 +56,18 @@ public class OrderServiceImpl implements OrderService {
             throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR, "数量信息不正确");
         }
 
-        // 2. 落单减库存 / 支付减库存(有可能超卖)
+        // 校验活动信息
+        if (promoId != null) {
+            if (promoId.intValue() != itemModel.getPromoModel().getId()) {
+                // (1) 校验对应活动是否存在这个适用商品
+                throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR, "活动信息不正确");
+            } else if (itemModel.getPromoModel().getStatus() != 2) {
+                // (2) 校验活动是否进行中
+                throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR, "不在活动时间内");
+            }
+        }
+
+        // 2. 落单减库存
         boolean result = itemService.decreaseStock(itemId, amount);
         if (!result) {
             throw new BusinessException(EmBusinessError.STOCK_NOT_ENOUGH);
@@ -67,8 +78,13 @@ public class OrderServiceImpl implements OrderService {
         orderModel.setUserId(userId);
         orderModel.setItemId(itemId);
         orderModel.setAmount(amount);
-        orderModel.setItemPrice(itemModel.getPrice());
+        if (promoId != null) {
-        orderModel.setOrderPrice(itemModel.getPrice().multiply(new BigDecimal(amount)));
+            orderModel.setItemPrice(itemModel.getPromoModel().getPromoPrice());
+        } else {
+            orderModel.setItemPrice(itemModel.getPrice());
+        }
+        orderModel.setPromoId(promoId);
+        orderModel.setOrderPrice(orderModel.getItemPrice().multiply(new BigDecimal(amount)));
 
         // 生成交易流水号(订单号)
         orderModel.setId(generateOrderNo());

src/main/java/com/cxyxiaomo/flashsale/service/model/OrderModel.java

@@ -14,13 +14,16 @@ public class OrderModel {
     // 购买的商品Id
     private Integer itemId;
 
-    // 购买商品的单价
+    // 若非空，则表示是以秒杀商品方式下单
+    private Integer promoId;
+
+    // 购买商品的单价（若promoId非空，则表示秒杀商品价格）
     private BigDecimal itemPrice;
 
     // 购买数量
     private  Integer amount;
 
-    // 购买金额
+    // 购买金额（若promoId非空，则表示秒杀商品价格）
     private BigDecimal orderPrice;
 
     public String getId() {
@@ -47,6 +50,14 @@ public class OrderModel {
         this.itemId = itemId;
     }
 
+    public Integer getPromoId() {
+        return promoId;
+    }
+
+    public void setPromoId(Integer promoId) {
+        this.promoId = promoId;
+    }
+
     public BigDecimal getItemPrice() {
         return itemPrice;
     }

src/main/resources/mapping/OrderDOMapper.xml

@@ -5,7 +5,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Thu Mar 03 22:04:45 CST 2022.
+      This element was generated on Sat Mar 05 15:52:04 CST 2022.
     -->
     <id column="id" jdbcType="VARCHAR" property="id" />
     <result column="user_id" jdbcType="INTEGER" property="userId" />
@@ -13,20 +13,21 @@
     <result column="item_price" jdbcType="DECIMAL" property="itemPrice" />
     <result column="amount" jdbcType="INTEGER" property="amount" />
     <result column="order_price" jdbcType="DECIMAL" property="orderPrice" />
+    <result column="promo_id" jdbcType="INTEGER" property="promoId" />
   </resultMap>
   <sql id="Base_Column_List">
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Thu Mar 03 22:04:45 CST 2022.
+      This element was generated on Sat Mar 05 15:52:04 CST 2022.
     -->
-    id, user_id, item_id, item_price, amount, order_price
+    id, user_id, item_id, item_price, amount, order_price, promo_id
   </sql>
   <select id="selectByPrimaryKey" parameterType="java.lang.String" resultMap="BaseResultMap">
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Thu Mar 03 22:04:45 CST 2022.
+      This element was generated on Sat Mar 05 15:52:04 CST 2022.
     -->
     select 
     <include refid="Base_Column_List" />
@@ -37,7 +38,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Thu Mar 03 22:04:45 CST 2022.
+      This element was generated on Sat Mar 05 15:52:04 CST 2022.
     -->
     delete from order_info
     where id = #{id,jdbcType=VARCHAR}
@@ -46,20 +47,20 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Thu Mar 03 22:04:45 CST 2022.
+      This element was generated on Sat Mar 05 15:52:04 CST 2022.
     -->
     insert into order_info (id, user_id, item_id, 
-      item_price, amount, order_price
+      item_price, amount, order_price, 
-      )
+      promo_id)
     values (#{id,jdbcType=VARCHAR}, #{userId,jdbcType=INTEGER}, #{itemId,jdbcType=INTEGER}, 
-      #{itemPrice,jdbcType=DECIMAL}, #{amount,jdbcType=INTEGER}, #{orderPrice,jdbcType=DECIMAL}
+      #{itemPrice,jdbcType=DECIMAL}, #{amount,jdbcType=INTEGER}, #{orderPrice,jdbcType=DECIMAL}, 
-      )
+      #{promoId,jdbcType=INTEGER})
   </insert>
   <insert id="insertSelective" parameterType="com.cxyxiaomo.flashsale.dataobject.OrderDO">
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Thu Mar 03 22:04:45 CST 2022.
+      This element was generated on Sat Mar 05 15:52:04 CST 2022.
     -->
     insert into order_info
     <trim prefix="(" suffix=")" suffixOverrides=",">
@@ -81,6 +82,9 @@
       <if test="orderPrice != null">
         order_price,
       </if>
+      <if test="promoId != null">
+        promo_id,
+      </if>
     </trim>
     <trim prefix="values (" suffix=")" suffixOverrides=",">
       <if test="id != null">
@@ -101,13 +105,16 @@
       <if test="orderPrice != null">
         #{orderPrice,jdbcType=DECIMAL},
       </if>
+      <if test="promoId != null">
+        #{promoId,jdbcType=INTEGER},
+      </if>
     </trim>
   </insert>
   <update id="updateByPrimaryKeySelective" parameterType="com.cxyxiaomo.flashsale.dataobject.OrderDO">
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Thu Mar 03 22:04:45 CST 2022.
+      This element was generated on Sat Mar 05 15:52:04 CST 2022.
     -->
     update order_info
     <set>
@@ -126,6 +133,9 @@
       <if test="orderPrice != null">
         order_price = #{orderPrice,jdbcType=DECIMAL},
       </if>
+      <if test="promoId != null">
+        promo_id = #{promoId,jdbcType=INTEGER},
+      </if>
     </set>
     where id = #{id,jdbcType=VARCHAR}
   </update>
@@ -133,14 +143,15 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Thu Mar 03 22:04:45 CST 2022.
+      This element was generated on Sat Mar 05 15:52:04 CST 2022.
     -->
     update order_info
     set user_id = #{userId,jdbcType=INTEGER},
       item_id = #{itemId,jdbcType=INTEGER},
       item_price = #{itemPrice,jdbcType=DECIMAL},
       amount = #{amount,jdbcType=INTEGER},
-      order_price = #{orderPrice,jdbcType=DECIMAL}
+      order_price = #{orderPrice,jdbcType=DECIMAL},
+      promo_id = #{promoId,jdbcType=INTEGER}
     where id = #{id,jdbcType=VARCHAR}
   </update>
 </mapper>