Redis 分布式会话（基于session）

.idea/dataSources.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DataSourceManagerImpl" format="xml" multifile-model="true">
+    <data-source source="LOCAL" name="flashsale/Hibernate" uuid="6a9320fa-cd50-4980-95ca-7f4f4947182e">
+      <driver-ref>mysql</driver-ref>
+      <synchronize>true</synchronize>
+      <imported>true</imported>
+      <remarks>Hibernate</remarks>
+      <jdbc-driver>com.mysql.jdbc.Driver</jdbc-driver>
+      <jdbc-url>jdbc:mysql://127.0.0.1:3306/flashsale?useSSL=false</jdbc-url>
+      <working-dir>$ProjectFileDir$</working-dir>
+    </data-source>
+  </component>
+</project>

.idea/sqldialects.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="SqlDialectMappings">
+    <file url="PROJECT" dialect="MySQL" />
+  </component>
+</project>

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
+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: 03/03/2022 18:37:04
+ Date: 05/03/2022 16:32:52
 */
 
 SET NAMES utf8mb4;
@@ -34,21 +34,21 @@ CREATE TABLE `item_info`  (
 -- ----------------------------
 -- Records of item_info
 -- ----------------------------
-INSERT INTO `item_info` VALUES (1, 'item-h7p0wt-22680', 22.00, '0sddhs4aeowc26638j5fp2ox', 0, 'https://domain.com/pic/190ghi.jpg');
+INSERT INTO `item_info` VALUES (1, 'item-h7p0wt-22680', 22.00, '0sddhs4aeowc26638j5fp2ox', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (2, '电视机', 1800.00, '一台电视机', 0, 'https://domain.com/pic/television.png');
+INSERT INTO `item_info` VALUES (2, '电视机', 1800.00, '一台电视机', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (3, '电冰箱', 2800.00, '一台电冰箱', 0, 'https://domain.com/pic/电冰箱.png');
+INSERT INTO `item_info` VALUES (3, '电冰箱', 2800.00, '一台电冰箱', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (4, '空调', 3600.00, '一台空调', 0, 'https://domain.com/pic/空调.png');
+INSERT INTO `item_info` VALUES (4, '空调', 3600.00, '一台空调', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (5, 'item-2xmm6g-5492', 235.00, 'lsudsf67ghobos3q1olbwx27', 0, 'https://domain.com/pic/1fvojf.jpg');
+INSERT INTO `item_info` VALUES (5, '小米手机', 2235.00, 'lsudsf67ghobos3q1olbwx27', 0, 'https://ss0.baidu.com/7Po3dSag_xI4khGko9WTAnF6hhy/image/h%3D300/sign=edc83f8851f431ada3d245397b37ac0f/d058ccbf6c81800a46a75314ec3533fa828b476e.jpg');
-INSERT INTO `item_info` VALUES (6, 'item-wlx9gu-1220', 270.00, '3q234qqp3wwo53mtdv0qjuvg', 0, 'https://domain.com/pic/tkxc5q.jpg');
+INSERT INTO `item_info` VALUES (6, 'item-wlx9gu-1220', 270.00, '3q234qqp3wwo53mtdv0qjuvg', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (7, 'item-cqru11-3487', 259.00, '04q6lopvj3ubb4458k4wldok', 0, 'https://domain.com/pic/nxmx2h.jpg');
+INSERT INTO `item_info` VALUES (7, 'item-cqru11-3487', 259.00, '04q6lopvj3ubb4458k4wldok', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (8, 'item-7f7qa1-5168', 314.00, 'jqkgc5ks2r9e2k8za3zs9rlc', 0, 'https://domain.com/pic/gvwtzd.jpg');
+INSERT INTO `item_info` VALUES (8, 'item-7f7qa1-5168', 314.00, 'jqkgc5ks2r9e2k8za3zs9rlc', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (9, 'item-i8flrb-7649', 129.00, 'i0m9w2x5w4gugeq7hlyp8nqx', 0, 'https://domain.com/pic/rz85vu.jpg');
+INSERT INTO `item_info` VALUES (9, 'item-i8flrb-7649', 129.00, 'i0m9w2x5w4gugeq7hlyp8nqx', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (10, 'item-epo4p3-8545', 40.00, 'x71zeodg46ziiid7pgfag4bc', 0, 'https://domain.com/pic/o0f3uk.jpg');
+INSERT INTO `item_info` VALUES (10, 'item-epo4p3-8545', 40.00, 'x71zeodg46ziiid7pgfag4bc', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (11, 'item-o7iiuj-1056', 322.00, 'fm3r99ko038jbfhy5cg7kwp8', 0, 'https://domain.com/pic/u0rjr8.jpg');
+INSERT INTO `item_info` VALUES (11, 'item-o7iiuj-1056', 322.00, 'fm3r99ko038jbfhy5cg7kwp8', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (12, 'item-fi7q7p-11366', 24.00, '18e54me0cdbqt8n9mxjnisf8', 0, 'https://domain.com/pic/eetb26.jpg');
+INSERT INTO `item_info` VALUES (12, 'item-fi7q7p-11366', 24.00, '18e54me0cdbqt8n9mxjnisf8', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (13, 'item-9lwcps-12165', 9.00, 'hlxnhcfak89wengpsnehgtqs', 0, 'https://domain.com/pic/r9yxmi.jpg');
+INSERT INTO `item_info` VALUES (13, 'item-9lwcps-12165', 9.00, 'hlxnhcfak89wengpsnehgtqs', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (14, 'item-pgdbqk-12664', 151.00, 'irydvab5wixg59c7scgt50yh', 0, 'https://domain.com/pic/xvfgwv.jpg');
+INSERT INTO `item_info` VALUES (14, 'item-pgdbqk-12664', 151.00, 'irydvab5wixg59c7scgt50yh', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
-INSERT INTO `item_info` VALUES (15, 'item-0lq98b-13424', 164.00, 'vwz4rsb4qhsnjs3phos35415', 0, 'https://domain.com/pic/9qhi3l.jpg');
+INSERT INTO `item_info` VALUES (15, 'item-0lq98b-13424', 164.00, 'vwz4rsb4qhsnjs3phos35415', 0, 'https://ns-strategy.cdn.bcebos.com/ns-strategy/upload/fc_big_pic/part-00015-3050.jpg');
 
 -- ----------------------------
 -- Table structure for item_stock
@@ -82,6 +82,62 @@ INSERT INTO `item_stock` VALUES (13, 351, 13);
 INSERT INTO `item_stock` VALUES (14, 117, 14);
 INSERT INTO `item_stock` VALUES (15, 34, 15);
 
+-- ----------------------------
+-- Table structure for order_info
+-- ----------------------------
+DROP TABLE IF EXISTS `order_info`;
+CREATE TABLE `order_info`  (
+  `id` varchar(32) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL,
+  `user_id` int(11) NOT NULL DEFAULT 0,
+  `item_id` int(11) NOT NULL,
+  `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;
+
+-- ----------------------------
+-- Records of order_info
+-- ----------------------------
+
+-- ----------------------------
+-- Table structure for promo_info
+-- ----------------------------
+DROP TABLE IF EXISTS `promo_info`;
+CREATE TABLE `promo_info`  (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `promo_name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '',
+  `start_date` datetime NOT NULL DEFAULT '0000-01-01 00:00:00',
+  `end_date` datetime NOT NULL DEFAULT '0000-01-01 00:00:00',
+  `item_id` int(11) NOT NULL DEFAULT 0,
+  `promo_item_price` decimal(10, 2) NOT NULL DEFAULT 0.00,
+  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;
+
+-- ----------------------------
+-- Records of promo_info
+-- ----------------------------
+INSERT INTO `promo_info` VALUES (1, '小米手机抢购活动', '2022-03-05 14:00:00', '2022-03-05 16:00:00', 5, 1999.00);
+
+-- ----------------------------
+-- Table structure for sequence_info
+-- ----------------------------
+DROP TABLE IF EXISTS `sequence_info`;
+CREATE TABLE `sequence_info`  (
+  `name` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL,
+  `current_value` int(11) NOT NULL DEFAULT 0,
+  `step` int(11) NOT NULL DEFAULT 0,
+  PRIMARY KEY (`name`) USING BTREE
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci ROW_FORMAT = DYNAMIC;
+
+-- ----------------------------
+-- Records of sequence_info
+-- ----------------------------
+INSERT INTO `sequence_info` VALUES ('order_info', 5, 1);
+
 -- ----------------------------
 -- Table structure for user_info
 -- ----------------------------

README.md

@@ -18,7 +18,7 @@
 | ----------------- | --------------------- | --------------------------------------- | ---------------------------------------- | ------------------------------- |
 | **Controller层**  |                       |                                         |                                          |                                 |
 | Controller        | controller            | 类 class                                |                                          | controller.UserController       |
-| View Object       | controller/viewobject | 类 class                                | 将用户Model转化为可供UI使用的View Object | controller.UserController       |
+| View Object (VO)  | controller/viewobject | 类 class                                | 将用户Model转化为可供UI使用的View Object | controller.UserController       |
 |                   |                       |                                         |                                          |                                 |
 | **Service层**     | 转换成业务模型        |                                         |                                          |                                 |
 | Service           | service               | 接口 interface                          |                                          | service.UserService             |
@@ -28,7 +28,7 @@
 | **Dao层**         | 对数据库的映射        |                                         |                                          |                                 |
 | Mapper            | dao                   | 接口 interface                          |                                          | dao.UserDOMapper                |
 | Mapping           | resources/mapping     | Mapper接口实现类                        | xml格式；SQL语句                         | mapping/UserDOMapper.xml        |
-| Data Object       | dataobject            | 类 class                                |                                          | dataobject.UserDO               |
+| Data Object (DO)  | dataobject            | 类 class                                |                                          | dataobject.UserDO               |
 |                   |                       |                                         |                                          |                                 |
 | **其他**          |                       |                                         |                                          |                                 |
 | response          | response              |                                         | 用于处理HTTP请求返回                     | response.CommonReturnType       |
@@ -41,3 +41,50 @@
 | BusinessException | error                 | CommonError接口实现类 & 继承自Exception |                                          | error.BusinessException         |
 
 **Tips:** Model与Data Object并非完全一一对应，例如UserModel是由ServiceImpl将UserDO和UserPasswordDO组装而成的。
+
+
+
+代码构建顺序：
+
+1. 创建Model模型（service/model）
+
+2. 创建数据库中数据表
+
+3. 使用mybatis-generator生成数据库映射文件（dao ; dataobject ; resources/mapping）
+
+4. 创建Service接口（service）
+
+5. 创建Service接口实现Impl（service/impl）（class打上 `Service` 标注；方法上打上 `@Transactional` 标签保证是在同一事务中）
+
+6. 思考ServiceImpl中需要哪几步，并逐步实现
+
+   > - 如果需要修改自动生成的数据库语句，先改 resources/mapping 下的xml映射SQL语句，然后修改 dao 下的DOMapper接口
+   >
+   > - 可以用 `org.springframework.beans` 包中的 `BeanUtils.copyProperties` 进行DO转Model或Model转DO（要字段和类型完全一致的字段才能拷贝，其他不对应字段的需要手动设置）
+
+7. Service返回Controller前完成将DO转换为Model，同时进行业务处理，最后返回Model
+
+8. 创建Controller（继承BaseController），在class上添加注解
+
+   ```java
+   @Controller("/item")
+   @RequestMapping("/item")
+   @CrossOrigin(allowedHeaders = "*", allowCredentials = "true")
+   ```
+
+9. 创建Controller方法（添加以下注释）
+
+   ```java
+   // POST
+   @RequestMapping(value = "/create", method = {RequestMethod.POST}, consumes = {CONTENT_TYPE_FORMED})
+   @ResponseBody
+   
+   // GET
+   @RequestMapping(value = "/get", method = {RequestMethod.GET})
+   @ResponseBody
+   ```
+
+10. 前端页面
+
+11. 完成
+

frontend/getitem.html

@@ -11,6 +11,12 @@
 <body class="login">
 <div class="content">
     <h3 class="form-title">商品详情</h3>
+    <div id="promoStartDateContainer" class="from-group">
+        <label style="color: blue;" id="promoStatus" class="control-label"></label>
+        <div>
+            <label style="color: red;" class="control-label" id="promoStartDate">
+        </div>
+    </div>
     <div class="from-group">
         <div>
             <label class="control-label" id="title">
@@ -28,8 +34,14 @@
             <label class="control-label" id="price">
         </div>
     </div>
+    <div id="promoPriceContainer" class="from-group">
+        <label class="control-label">秒杀价格</label>
+        <div>
+            <label style="color: red;" class="control-label" id="promoPrice">
+        </div>
+    </div>
     <div class="from-group">
-            <img id="imgUrl" src="" style="width: 200px; height: auto;"/>
+        <img id="imgUrl" src="" style="width: 200px; height: auto;"/>
     </div>
     <div class="from-group">
         <label class="control-label">库存</label>
@@ -43,7 +55,10 @@
             <label class="control-label" id="sales">
         </div>
     </div>
-    <div>
+    <div class="form-actions">
+        <button class="btn blue" id="createorder" type="submit">
+            下单
+        </button>
         <a href="listitem.html">返回</a>
     </div>
 </div>
@@ -74,6 +89,7 @@
                 if (data.status == "success") {
                     g_itemVO = data.data;
                     reloadDom();
+                    setInterval(reloadDom, 300);
                 } else {
                     alert("获取信息失败，原因为" + data.data.errMsg);
                 }
@@ -82,6 +98,35 @@
                 alert("获取信息失败，原因为" + data.responseText);
             }
         })
+
+        // 下单
+        $("#createorder").on("click", function () {
+            $.ajax({
+                type: "POST",
+                contentType: "application/x-www-form-urlencoded",
+                url: "http://localhost:8090/order/createorder",
+                data: {
+                    "itemId": g_itemVO.id,
+                    "amount": 1, // 暂时写死，买1件
+                    "promoId": g_itemVO.promoId,
+                },
+                xhrFields: {withCredentials: true},
+                success: function (data) {
+                    if (data.status == "success") {
+                        alert("下单成功");
+                        window.location.reload();
+                    } else {
+                        alert("下单失败，原因为" + data.data.errMsg);
+                        if (data.data.errCode == "20003") {
+                            window.location.href = "login.html";
+                        }
+                    }
+                },
+                error: function (data) {
+                    alert("下单失败，原因为" + data.responseText);
+                }
+            })
+        });
     })
 
     function reloadDom() {
@@ -91,6 +136,28 @@
         $("#price").text(g_itemVO.price);
         $("#imgUrl").attr("src", g_itemVO.imgUrl);
         $("#sales").text(g_itemVO.sales);
+        if (g_itemVO.promoStatus == 1) {
+            // 秒杀活动还未开始
+            var startTime = g_itemVO.startDate.replace(new RegExp("-", "gm"), "/");
+            startTime = new Date(startTime).getTime();
+            var nowTime = Date.parse(new Date());
+            var delta = (startTime - nowTime) / 1000;
+
+            if (delta < 1) {
+                // 活动开始了
+                g_itemVO.promoStatus = 2;
+                reloadDom();
+            }
+
+            $("#promoStartDate").text("秒杀活动将于 " + g_itemVO.startDate + " 开始" +
+                "倒计时：" + delta + "s");
+            $("#promoPrice").text(g_itemVO.promoPrice);
+            $("#createorder").attr("disabled", true);
+        } else if (g_itemVO.promoStatus == 2) {
+            $("#promoStartDate").text("秒杀正在进行中");
+            $("#promoPrice").text(g_itemVO.promoPrice);
+            $("#createorder").attr("disabled", false);
+        }
     }
 </script>
 </body>

frontend/login.html

@@ -58,6 +58,7 @@
                 success: function (data) {
                     if (data.status == "success") {
                         alert("登录成功");
+                        window.location.href = "listitem.html";
                     } else {
                         alert("登录失败，原因为" + data.data.errMsg);
                     }

pom.xml

@@ -72,6 +72,26 @@
             <artifactId>hibernate-validator</artifactId>
             <version>5.4.3.Final</version>
         </dependency>
+
+        <!--日期时间-->
+        <dependency>
+            <groupId>joda-time</groupId>
+            <artifactId>joda-time</artifactId>
+            <version>2.9.1</version>
+        </dependency>
+
+        <!--引入SpringBoot对Redis的依赖-->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-redis</artifactId>
+        </dependency>
+
+        <!--SpringBoot将Session存储在Redis中-->
+        <dependency>
+            <groupId>org.springframework.session</groupId>
+            <artifactId>spring-session-data-redis</artifactId>
+            <version>2.0.5.RELEASE</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -168,6 +188,16 @@
                     <target>8</target>
                 </configuration>
             </plugin>
+
+            <!--
+            添加SpringBoot打包plugin
+            解决【flashsale-1.0-SNAPSHOT.jar中没有主清单属性】问题
+            -->
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <version>2.4.3</version>
+            </plugin>
         </plugins>
     </build>
 

src/main/java/com/cxyxiaomo/flashsale/config/RedisConfig.java

@@ -0,0 +1,10 @@
+package com.cxyxiaomo.flashsale.config;
+
+import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;
+import org.springframework.stereotype.Component;
+
+@Component
+@EnableRedisHttpSession(maxInactiveIntervalInSeconds = 3600) // 会话1hour过期
+public class RedisConfig  {
+
+}

src/main/java/com/cxyxiaomo/flashsale/config/WebServerConfiguration.java

@@ -0,0 +1,35 @@
+package com.cxyxiaomo.flashsale.config;
+
+import org.apache.catalina.connector.Connector;
+import org.apache.coyote.ProtocolHandler;
+import org.apache.coyote.http11.Http11NioProtocol;
+import org.springframework.boot.web.embedded.tomcat.TomcatConnectorCustomizer;
+import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
+import org.springframework.boot.web.server.ConfigurableWebServerFactory;
+import org.springframework.boot.web.server.WebServerFactoryCustomizer;
+import org.springframework.stereotype.Component;
+
+/**
+ * 当Spring容器内没有TomcatEmbeddedServletContainerFactory这个bean时，会把当前bean加载进Spring容器中
+ */
+@Component
+public class WebServerConfiguration implements WebServerFactoryCustomizer<ConfigurableWebServerFactory> {
+
+    @Override
+    public void customize(ConfigurableWebServerFactory factory) {
+    // 使用对应工厂类提供给我们的接口定制化我们的tomcat connector
+        ((TomcatServletWebServerFactory)factory).addConnectorCustomizers(new TomcatConnectorCustomizer() {
+            @Override
+            public void customize(Connector connector) {
+                Http11NioProtocol protocolHandler = (Http11NioProtocol) connector.getProtocolHandler();
+
+                // 定制化 KeepAliveTimeout，设置30秒内没有请求则服务端自动断开KeepAlive连接
+                protocolHandler.setKeepAliveTimeout(30000);
+
+                // 当客户端发送超过10000个请求则自动断开KeepAlive连接
+                protocolHandler.setMaxKeepAliveRequests(10000);
+
+            }
+        });
+    }
+}

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

@@ -5,12 +5,15 @@ import com.cxyxiaomo.flashsale.error.BusinessException;
 import com.cxyxiaomo.flashsale.response.CommonReturnType;
 import com.cxyxiaomo.flashsale.service.ItemService;
 import com.cxyxiaomo.flashsale.service.model.ItemModel;
+import org.joda.time.DateTime;
+import org.joda.time.format.DateTimeFormat;
 import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.*;
 
 import java.math.BigDecimal;
+import java.time.format.DateTimeFormatter;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -76,6 +79,15 @@ public class ItemController extends BaseController {
         }
         ItemVO itemVO = new ItemVO();
         BeanUtils.copyProperties(itemModel, itemVO);
+        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.getPromoModel().getId());
+            itemVO.setStartDate(itemModel.getPromoModel().getStartDate().toString(DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss")));
+            itemVO.setPromoPrice(itemModel.getPromoModel().getPromoPrice());
+        } else {
+            itemVO.setPromoStatus(0);
+        }
         return itemVO;
     }
 }

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

@@ -0,0 +1,44 @@
+package com.cxyxiaomo.flashsale.controller;
+
+import com.cxyxiaomo.flashsale.error.BusinessException;
+import com.cxyxiaomo.flashsale.error.EmBusinessError;
+import com.cxyxiaomo.flashsale.response.CommonReturnType;
+import com.cxyxiaomo.flashsale.service.OrderService;
+import com.cxyxiaomo.flashsale.service.model.OrderModel;
+import com.cxyxiaomo.flashsale.service.model.UserModel;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.*;
+
+import javax.servlet.http.HttpServletRequest;
+
+@Controller("/order")
+@RequestMapping("/order")
+@CrossOrigin(allowedHeaders = "*", allowCredentials = "true")
+public class OrderController extends BaseController {
+
+    @Autowired
+    private OrderService orderService;
+
+    @Autowired
+    private HttpServletRequest httpServletRequest;
+
+    // 封装下单请求
+    @RequestMapping(value = "/createorder", method = {RequestMethod.POST}, consumes = {CONTENT_TYPE_FORMED})
+    @ResponseBody
+    public CommonReturnType createOrder(@RequestParam(name = "itemId") Integer itemId,
+                                        @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()) {
+            throw new BusinessException(EmBusinessError.USER_NOT_LOGIN, "用户还未登录，不能下单");
+        }
+        // 获取用户的登录信息
+        UserModel userModel = (UserModel) httpServletRequest.getSession().getAttribute("LOGIN_USER");
+
+        OrderModel orderModel = orderService.createOrder(userModel.getId(), itemId, promoId, amount);
+
+        return CommonReturnType.create(null);
+    }
+}

src/main/java/com/cxyxiaomo/flashsale/controller/viewobject/ItemVO.java

@@ -24,6 +24,19 @@ public class ItemVO {
     // 商品描述图片的URL
     private String imgUrl;
 
+    // 记录商品是否在秒杀活动中，以及对应的状态
+    // 0：没有秒杀活动  2：秒杀活动待开始  3：秒杀活动进行中
+    private Integer promoStatus;
+
+    // 秒杀活动价格
+    private BigDecimal promoPrice;
+
+    // 秒杀活动Id
+    private Integer promoId;
+
+    // 秒杀活动开始时间
+    private String startDate;
+
     public Integer getId() {
         return id;
     }
@@ -79,4 +92,36 @@ public class ItemVO {
     public void setImgUrl(String imgUrl) {
         this.imgUrl = imgUrl;
     }
+
+    public Integer getPromoStatus() {
+        return promoStatus;
+    }
+
+    public void setPromoStatus(Integer promoStatus) {
+        this.promoStatus = promoStatus;
+    }
+
+    public BigDecimal getPromoPrice() {
+        return promoPrice;
+    }
+
+    public void setPromoPrice(BigDecimal promoPrice) {
+        this.promoPrice = promoPrice;
+    }
+
+    public Integer getPromoId() {
+        return promoId;
+    }
+
+    public void setPromoId(Integer promoId) {
+        this.promoId = promoId;
+    }
+
+    public String getStartDate() {
+        return startDate;
+    }
+
+    public void setStartDate(String startDate) {
+        this.startDate = startDate;
+    }
 }

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

@@ -1,6 +1,7 @@
 package com.cxyxiaomo.flashsale.dao;
 
 import com.cxyxiaomo.flashsale.dataobject.ItemDO;
+import org.apache.ibatis.annotations.Param;
 
 import java.util.List;
 
@@ -54,4 +55,6 @@ public interface ItemDOMapper {
      * @mbg.generated Thu Mar 03 13:12:13 CST 2022
      */
     int updateByPrimaryKey(ItemDO record);
+
+    int increaseSales(@Param("id") Integer id, @Param("amount") Integer amount);
 }

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

@@ -1,6 +1,7 @@
 package com.cxyxiaomo.flashsale.dao;
 
 import com.cxyxiaomo.flashsale.dataobject.ItemStockDO;
+import org.apache.ibatis.annotations.Param;
 
 public interface ItemStockDOMapper {
     /**
@@ -52,4 +53,6 @@ public interface ItemStockDOMapper {
      * @mbg.generated Thu Mar 03 13:12:13 CST 2022
      */
     int updateByPrimaryKey(ItemStockDO record);
+
+    int decreaseStock(@Param("itemId") Integer itemId, @Param("amount") Integer amount);
 }

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

@@ -0,0 +1,53 @@
+package com.cxyxiaomo.flashsale.dao;
+
+import com.cxyxiaomo.flashsale.dataobject.OrderDO;
+
+public interface OrderDOMapper {
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table order_info
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    int deleteByPrimaryKey(String id);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table order_info
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    int insert(OrderDO record);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table order_info
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    int insertSelective(OrderDO record);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table order_info
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    OrderDO selectByPrimaryKey(String id);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table order_info
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    int updateByPrimaryKeySelective(OrderDO record);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table order_info
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    int updateByPrimaryKey(OrderDO record);
+}

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

@@ -0,0 +1,55 @@
+package com.cxyxiaomo.flashsale.dao;
+
+import com.cxyxiaomo.flashsale.dataobject.PromoDO;
+
+public interface PromoDOMapper {
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table promo_info
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    int deleteByPrimaryKey(Integer id);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table promo_info
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    int insert(PromoDO record);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table promo_info
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    int insertSelective(PromoDO record);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table promo_info
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    PromoDO selectByPrimaryKey(Integer id);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table promo_info
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    int updateByPrimaryKeySelective(PromoDO record);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table promo_info
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    int updateByPrimaryKey(PromoDO record);
+
+    PromoDO selectByItemId(Integer itemId);
+}

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

@@ -0,0 +1,55 @@
+package com.cxyxiaomo.flashsale.dao;
+
+import com.cxyxiaomo.flashsale.dataobject.SequenceDO;
+
+public interface SequenceDOMapper {
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table sequence_info
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    int deleteByPrimaryKey(String name);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table sequence_info
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    int insert(SequenceDO record);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table sequence_info
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    int insertSelective(SequenceDO record);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table sequence_info
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    SequenceDO selectByPrimaryKey(String name);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table sequence_info
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    int updateByPrimaryKeySelective(SequenceDO record);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table sequence_info
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    int updateByPrimaryKey(SequenceDO record);
+
+    SequenceDO getSequenceByName(String name);
+}

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

@@ -0,0 +1,236 @@
+package com.cxyxiaomo.flashsale.dataobject;
+
+import java.math.BigDecimal;
+
+public class OrderDO {
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column order_info.id
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    private String id;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column order_info.user_id
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    private Integer userId;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column order_info.item_id
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    private Integer itemId;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column order_info.item_price
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    private BigDecimal itemPrice;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column order_info.amount
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    private Integer amount;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column order_info.order_price
+     *
+     * @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 Sat Mar 05 15:52:04 CST 2022
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column order_info.id
+     *
+     * @param id the value for order_info.id
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    public void setId(String id) {
+        this.id = id == null ? null : id.trim();
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column order_info.user_id
+     *
+     * @return the value of order_info.user_id
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    public Integer getUserId() {
+        return userId;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column order_info.user_id
+     *
+     * @param userId the value for order_info.user_id
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    public void setUserId(Integer userId) {
+        this.userId = userId;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column order_info.item_id
+     *
+     * @return the value of order_info.item_id
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    public Integer getItemId() {
+        return itemId;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column order_info.item_id
+     *
+     * @param itemId the value for order_info.item_id
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    public void setItemId(Integer itemId) {
+        this.itemId = itemId;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column order_info.item_price
+     *
+     * @return the value of order_info.item_price
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    public BigDecimal getItemPrice() {
+        return itemPrice;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column order_info.item_price
+     *
+     * @param itemPrice the value for order_info.item_price
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    public void setItemPrice(BigDecimal itemPrice) {
+        this.itemPrice = itemPrice;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column order_info.amount
+     *
+     * @return the value of order_info.amount
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    public Integer getAmount() {
+        return amount;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column order_info.amount
+     *
+     * @param amount the value for order_info.amount
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    public void setAmount(Integer amount) {
+        this.amount = amount;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column order_info.order_price
+     *
+     * @return the value of order_info.order_price
+     *
+     * @mbg.generated Sat Mar 05 15:52:04 CST 2022
+     */
+    public BigDecimal getOrderPrice() {
+        return orderPrice;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column order_info.order_price
+     *
+     * @param orderPrice the value for order_info.order_price
+     *
+     * @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/dataobject/PromoDO.java

@@ -0,0 +1,204 @@
+package com.cxyxiaomo.flashsale.dataobject;
+
+import java.math.BigDecimal;
+import java.util.Date;
+
+public class PromoDO {
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column promo_info.id
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    private Integer id;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column promo_info.promo_name
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    private String promoName;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column promo_info.start_date
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    private Date startDate;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column promo_info.end_date
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    private Date endDate;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column promo_info.item_id
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    private Integer itemId;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column promo_info.promo_item_price
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    private BigDecimal promoItemPrice;
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column promo_info.id
+     *
+     * @return the value of promo_info.id
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    public Integer getId() {
+        return id;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column promo_info.id
+     *
+     * @param id the value for promo_info.id
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column promo_info.promo_name
+     *
+     * @return the value of promo_info.promo_name
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    public String getPromoName() {
+        return promoName;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column promo_info.promo_name
+     *
+     * @param promoName the value for promo_info.promo_name
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    public void setPromoName(String promoName) {
+        this.promoName = promoName == null ? null : promoName.trim();
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column promo_info.start_date
+     *
+     * @return the value of promo_info.start_date
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    public Date getStartDate() {
+        return startDate;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column promo_info.start_date
+     *
+     * @param startDate the value for promo_info.start_date
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    public void setStartDate(Date startDate) {
+        this.startDate = startDate;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column promo_info.end_date
+     *
+     * @return the value of promo_info.end_date
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    public Date getEndDate() {
+        return endDate;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column promo_info.end_date
+     *
+     * @param endDate the value for promo_info.end_date
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    public void setEndDate(Date endDate) {
+        this.endDate = endDate;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column promo_info.item_id
+     *
+     * @return the value of promo_info.item_id
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    public Integer getItemId() {
+        return itemId;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column promo_info.item_id
+     *
+     * @param itemId the value for promo_info.item_id
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    public void setItemId(Integer itemId) {
+        this.itemId = itemId;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column promo_info.promo_item_price
+     *
+     * @return the value of promo_info.promo_item_price
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    public BigDecimal getPromoItemPrice() {
+        return promoItemPrice;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column promo_info.promo_item_price
+     *
+     * @param promoItemPrice the value for promo_info.promo_item_price
+     *
+     * @mbg.generated Sat Mar 05 12:55:23 CST 2022
+     */
+    public void setPromoItemPrice(BigDecimal promoItemPrice) {
+        this.promoItemPrice = promoItemPrice;
+    }
+}

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

@@ -0,0 +1,102 @@
+package com.cxyxiaomo.flashsale.dataobject;
+
+public class SequenceDO {
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column sequence_info.name
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    private String name;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column sequence_info.current_value
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    private Integer currentValue;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column sequence_info.step
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    private Integer step;
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column sequence_info.name
+     *
+     * @return the value of sequence_info.name
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column sequence_info.name
+     *
+     * @param name the value for sequence_info.name
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    public void setName(String name) {
+        this.name = name == null ? null : name.trim();
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column sequence_info.current_value
+     *
+     * @return the value of sequence_info.current_value
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    public Integer getCurrentValue() {
+        return currentValue;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column sequence_info.current_value
+     *
+     * @param currentValue the value for sequence_info.current_value
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    public void setCurrentValue(Integer currentValue) {
+        this.currentValue = currentValue;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column sequence_info.step
+     *
+     * @return the value of sequence_info.step
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    public Integer getStep() {
+        return step;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column sequence_info.step
+     *
+     * @param step the value for sequence_info.step
+     *
+     * @mbg.generated Thu Mar 03 23:07:17 CST 2022
+     */
+    public void setStep(Integer step) {
+        this.step = step;
+    }
+}

src/main/java/com/cxyxiaomo/flashsale/error/EmBusinessError.java

@@ -1,13 +1,17 @@
 package com.cxyxiaomo.flashsale.error;
 
 public enum EmBusinessError implements CommonError {
-    // 通用错误类型 00001
+    // 通用错误类型 10001
     PARAMETER_VALIDATION_ERROR(10001, "参数不合法"),
     UNKNOWN_ERROR(10002, "未知错误"),
 
-    // 10000开头为用户信息相关错误定义
+    // 20000开头为用户信息相关错误定义
     USER_NOT_EXIST(20001, "用户不存在"),
-    USER_LOGIN_FAILED(20002, "用户手机号或密码不正确");
+    USER_LOGIN_FAILED(20002, "用户手机号或密码不正确"),
+    USER_NOT_LOGIN(20003, "用户还未登录"),
+
+    // 30000开头为交易信息错误定义
+    STOCK_NOT_ENOUGH(30001, "库存不足");
 
     private EmBusinessError(int errCode, String errMsg) {
         this.errCode = errCode;

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

@@ -14,4 +14,10 @@ public interface ItemService {
 
     // 商品详情浏览
     ItemModel getItemById(Integer id);
+
+    // 库存扣减
+    boolean decreaseStock(Integer itemId, Integer amount) throws BusinessException;
+
+    // 商品销量增加
+    void increaseSales(Integer itemId, Integer amount);
 }

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

@@ -0,0 +1,15 @@
+package com.cxyxiaomo.flashsale.service;
+
+import com.cxyxiaomo.flashsale.error.BusinessException;
+import com.cxyxiaomo.flashsale.service.model.OrderModel;
+
+public interface OrderService {
+    /**
+     *
+     * @param userId 用户id
+     * @param itemId 购买商品
+     * @param amount 购买商品数量
+     * @return
+     */
+    OrderModel createOrder(Integer userId, Integer itemId, Integer promoId, Integer amount) throws BusinessException;
+}

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

@@ -0,0 +1,8 @@
+package com.cxyxiaomo.flashsale.service;
+
+import com.cxyxiaomo.flashsale.service.model.PromoModel;
+
+public interface PromoService {
+    // 根据itemId获取即将进行的或正在进行的秒杀活动
+    PromoModel getPromoByItemId(Integer itemId);
+}

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

@@ -7,7 +7,9 @@ import com.cxyxiaomo.flashsale.dataobject.ItemStockDO;
 import com.cxyxiaomo.flashsale.error.BusinessException;
 import com.cxyxiaomo.flashsale.error.EmBusinessError;
 import com.cxyxiaomo.flashsale.service.ItemService;
+import com.cxyxiaomo.flashsale.service.PromoService;
 import com.cxyxiaomo.flashsale.service.model.ItemModel;
+import com.cxyxiaomo.flashsale.service.model.PromoModel;
 import com.cxyxiaomo.flashsale.validator.ValidationResult;
 import com.cxyxiaomo.flashsale.validator.ValidatorImpl;
 import org.springframework.beans.BeanUtils;
@@ -30,6 +32,9 @@ public class ItemServiceImpl implements ItemService {
     @Autowired
     private ItemStockDOMapper itemStockDOMapper;
 
+    @Autowired
+    private PromoService promoService;
+
     @Override
     @Transactional
     public ItemModel createItem(ItemModel itemModel) throws BusinessException {
@@ -100,9 +105,35 @@ public class ItemServiceImpl implements ItemService {
 
         // 将Data Object -> Model
         ItemModel itemModel = convertModelFromDataObject(itemDO, itemStockDO);
+
+        // 获取活动商品信息
+        PromoModel promoModel = promoService.getPromoByItemId(itemModel.getId());
+        if (promoModel != null && promoModel.getStatus() != 3) {
+            itemModel.setPromoModel(promoModel);
+        }
+
         return itemModel;
     }
 
+    @Override
+    @Transactional
+    public boolean decreaseStock(Integer itemId, Integer amount) throws BusinessException {
+        int affectedRow = itemStockDOMapper.decreaseStock(itemId, amount);
+        if (affectedRow > 0) {
+            // 更新库存成功
+            return true;
+        } else {
+            // 更新库存失败
+            return false;
+        }
+    }
+
+    @Override
+    @Transactional
+    public void increaseSales(Integer itemId, Integer amount) {
+        itemDOMapper.increaseSales(itemId, amount);
+    }
+
     private ItemModel convertModelFromDataObject(ItemDO itemDO, ItemStockDO itemStockDO) {
         ItemModel itemModel = new ItemModel();
         BeanUtils.copyProperties(itemDO, itemModel);

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

@@ -0,0 +1,141 @@
+package com.cxyxiaomo.flashsale.service.impl;
+
+import com.cxyxiaomo.flashsale.dao.OrderDOMapper;
+import com.cxyxiaomo.flashsale.dao.SequenceDOMapper;
+import com.cxyxiaomo.flashsale.dataobject.OrderDO;
+import com.cxyxiaomo.flashsale.dataobject.SequenceDO;
+import com.cxyxiaomo.flashsale.error.BusinessException;
+import com.cxyxiaomo.flashsale.error.EmBusinessError;
+import com.cxyxiaomo.flashsale.service.ItemService;
+import com.cxyxiaomo.flashsale.service.OrderService;
+import com.cxyxiaomo.flashsale.service.UserService;
+import com.cxyxiaomo.flashsale.service.model.ItemModel;
+import com.cxyxiaomo.flashsale.service.model.OrderModel;
+import com.cxyxiaomo.flashsale.service.model.UserModel;
+import org.springframework.beans.BeanUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Propagation;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+
+@Service
+public class OrderServiceImpl implements OrderService {
+
+    @Autowired
+    private ItemService itemService;
+
+    @Autowired
+    private UserService userService;
+
+    @Autowired
+    private OrderDOMapper orderDOMapper;
+
+    @Autowired
+    private SequenceDOMapper sequenceDOMapper;
+
+    @Override
+    @Transactional
+    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);
+        if (itemModel == null) {
+            throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR, "商品信息不存在");
+        }
+
+        UserModel userModel = userService.getUserById(userId);
+        if (userModel == null) {
+            throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR, "用户信息不存在");
+        }
+
+        if (amount <= 0 || amount > 99) {
+            throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR, "数量信息不正确");
+        }
+
+        // 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);
+        }
+
+        // 3. 订单入库
+        OrderModel orderModel = new OrderModel();
+        orderModel.setUserId(userId);
+        orderModel.setItemId(itemId);
+        orderModel.setAmount(amount);
+        if (promoId != null) {
+            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());
+
+        OrderDO orderDO = convertFromOrderModel(orderModel);
+        orderDOMapper.insertSelective(orderDO);
+
+        // 商品销量增加
+        itemService.increaseSales(itemId, amount);
+
+        // 4. 返回前端
+        return orderModel;
+    }
+
+    private OrderDO convertFromOrderModel(OrderModel orderModel) {
+        if (orderModel == null) {
+            return null;
+        }
+        OrderDO orderDO = new OrderDO();
+        BeanUtils.copyProperties(orderModel, orderDO);
+
+        return orderDO;
+    }
+
+    // 生成交易流水号，订单号
+    @Transactional(propagation = Propagation.REQUIRES_NEW) // 即使包在事务的函数中也新开一个事务来提交，保证全局唯一性
+    private String generateOrderNo() {
+        // 订单号为16位
+        StringBuilder stringBuilder = new StringBuilder();
+
+        // 前8位为时间信息（年月日）
+        LocalDateTime now = LocalDateTime.now();
+        String nowDate = now.format(DateTimeFormatter.ISO_DATE).replace("-", "");
+        stringBuilder.append(nowDate);
+
+        // 中间6位为自增序列 （暂时不考虑序列超出情况，可增加init和max数据表列，当达到最大时恢复为初始值，作为循环序列使用）
+        // 获取当前Sequence
+        int sequence = 0;
+        SequenceDO sequenceDO = sequenceDOMapper.getSequenceByName("order_info");
+        sequence = sequenceDO.getCurrentValue();
+        sequenceDO.setCurrentValue(sequenceDO.getCurrentValue() + sequenceDO.getStep());
+        sequenceDOMapper.updateByPrimaryKeySelective(sequenceDO);
+        String sequenceStr = String.valueOf(sequence);
+        for (int i = 0; i < 6 - sequenceStr.length(); i++) { // 补齐前面的 0
+            stringBuilder.append(0);
+        }
+        stringBuilder.append(sequenceStr);
+
+        // 最后2位为分库分表位
+        stringBuilder.append("00"); // 暂时写死
+
+        return stringBuilder.toString();
+    }
+}

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

@@ -0,0 +1,54 @@
+package com.cxyxiaomo.flashsale.service.impl;
+
+import com.cxyxiaomo.flashsale.dao.PromoDOMapper;
+import com.cxyxiaomo.flashsale.dataobject.PromoDO;
+import com.cxyxiaomo.flashsale.service.PromoService;
+import com.cxyxiaomo.flashsale.service.model.PromoModel;
+import org.joda.time.DateTime;
+import org.springframework.beans.BeanUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class PromoServiceImpl implements PromoService {
+
+    @Autowired
+    private PromoDOMapper promoDOMapper;
+
+    @Override
+    public PromoModel getPromoByItemId(Integer itemId) {
+        // 获取对应商品的秒杀活动信息
+        PromoDO promoDO = promoDOMapper.selectByItemId(itemId);
+
+        // Data Object -> Model
+        PromoModel promoModel = convertFromDataObject(promoDO);
+
+        if (promoModel == null) {
+            return null;
+        }
+
+        // 判断秒杀活动是否即将开始或正在进行
+        if (promoModel.getStartDate().isAfterNow()) {
+            promoModel.setStatus(1); // 还未开始
+        } else if (promoModel.getEndDate().isBeforeNow()) {
+            promoModel.setStatus(3); // 已经结束
+        } else {
+            promoModel.setStatus(2); // 正在进行中
+        }
+
+        return promoModel;
+    }
+
+    private PromoModel convertFromDataObject(PromoDO promoDO) {
+        if (promoDO == null) {
+            return null;
+        }
+        PromoModel promoModel = new PromoModel();
+        BeanUtils.copyProperties(promoDO, promoModel);
+        promoModel.setPromoPrice(promoDO.getPromoItemPrice());
+        promoModel.setStartDate(new DateTime(promoDO.getStartDate()));
+        promoModel.setEndDate(new DateTime(promoDO.getEndDate()));
+
+        return promoModel;
+    }
+}

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

@@ -33,6 +33,10 @@ public class ItemModel {
     @NotBlank(message = "商品描述图片不能为空")
     private String imgUrl;
 
+    // 使用聚合模型
+    // 如果promoModel不为空，则表示其还有未结束的秒杀活动
+    private PromoModel promoModel;
+
     public Integer getId() {
         return id;
     }
@@ -88,4 +92,12 @@ public class ItemModel {
     public void setImgUrl(String imgUrl) {
         this.imgUrl = imgUrl;
     }
+
+    public PromoModel getPromoModel() {
+        return promoModel;
+    }
+
+    public void setPromoModel(PromoModel promoModel) {
+        this.promoModel = promoModel;
+    }
 }

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

@@ -0,0 +1,84 @@
+package com.cxyxiaomo.flashsale.service.model;
+
+import java.math.BigDecimal;
+
+// 用户下单的交易模型
+public class OrderModel {
+
+    // 交易号
+    private String id;
+
+    // 用户id
+    private Integer userId;
+
+    // 购买的商品Id
+    private Integer itemId;
+
+    // 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（若promoId非空，则表示秒杀商品价格）
+    private BigDecimal orderPrice;
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public Integer getUserId() {
+        return userId;
+    }
+
+    public void setUserId(Integer userId) {
+        this.userId = userId;
+    }
+
+    public Integer getItemId() {
+        return itemId;
+    }
+
+    public void setItemId(Integer itemId) {
+        this.itemId = itemId;
+    }
+
+    public Integer getPromoId() {
+        return promoId;
+    }
+
+    public void setPromoId(Integer promoId) {
+        this.promoId = promoId;
+    }
+
+    public BigDecimal getItemPrice() {
+        return itemPrice;
+    }
+
+    public void setItemPrice(BigDecimal itemPrice) {
+        this.itemPrice = itemPrice;
+    }
+
+    public Integer getAmount() {
+        return amount;
+    }
+
+    public void setAmount(Integer amount) {
+        this.amount = amount;
+    }
+
+    public BigDecimal getOrderPrice() {
+        return orderPrice;
+    }
+
+    public void setOrderPrice(BigDecimal orderPrice) {
+        this.orderPrice = orderPrice;
+    }
+}

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

@@ -0,0 +1,85 @@
+package com.cxyxiaomo.flashsale.service.model;
+
+import org.joda.time.DateTime;
+
+import java.math.BigDecimal;
+
+public class PromoModel {
+
+    private Integer id;
+
+    // 秒杀活动名称
+    private String promoName;
+
+    // 活动开始时间
+    private DateTime startDate;
+
+    // 活动结束时间
+    private DateTime endDate;
+
+    // 秒杀活动适用商品
+    private Integer itemId;
+
+    // 秒杀活动的价格
+    private BigDecimal promoPrice;
+
+    // 秒杀活动状态
+    // 1：还未开始  2：进行中  3：已结束
+    private Integer status;
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getPromoName() {
+        return promoName;
+    }
+
+    public void setPromoName(String promoName) {
+        this.promoName = promoName;
+    }
+
+    public DateTime getStartDate() {
+        return startDate;
+    }
+
+    public void setStartDate(DateTime startDate) {
+        this.startDate = startDate;
+    }
+
+    public DateTime getEndDate() {
+        return endDate;
+    }
+
+    public void setEndDate(DateTime endDate) {
+        this.endDate = endDate;
+    }
+
+    public Integer getItemId() {
+        return itemId;
+    }
+
+    public void setItemId(Integer itemId) {
+        this.itemId = itemId;
+    }
+
+    public BigDecimal getPromoPrice() {
+        return promoPrice;
+    }
+
+    public void setPromoPrice(BigDecimal promoPrice) {
+        this.promoPrice = promoPrice;
+    }
+
+    public Integer getStatus() {
+        return status;
+    }
+
+    public void setStatus(Integer status) {
+        this.status = status;
+    }
+}

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

@@ -5,8 +5,9 @@ import javax.validation.constraints.Max;
 import javax.validation.constraints.Min;
 import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.NotNull;
+import java.io.Serializable;
 
-public class UserModel {
+public class UserModel implements Serializable {
     private Integer id;
 
     @NotBlank(message = "用户名不能为空")

src/main/resources/application.properties

@@ -10,4 +10,14 @@ spring.datasource.password=111111
 
 # 使用druid数据源
 spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
-spring.datasource.driverClassName=com.mysql.jdbc.Driver
+spring.datasource.driverClassName=com.mysql.jdbc.Driver
+
+# 配置SpringBoot对Redis的依赖
+spring.redis.host=127.0.0.1
+spring.redis.port=6379
+spring.redis.database=10
+#spring.redis.password=
+
+# 设置jedis连接池
+spring.redis.jedis.pool.max-active=50
+spring.redis.jedis.pool.max-idle=20

src/main/resources/mapping/ItemDOMapper.xml

@@ -28,7 +28,7 @@
       This element is automatically generated by MyBatis Generator, do not modify.
       This element was generated on Thu Mar 03 13:12:13 CST 2022.
     -->
-    select 
+    select
     <include refid="Base_Column_List" />
     from item_info
     where id = #{id,jdbcType=INTEGER}
@@ -48,10 +48,10 @@
       This element is automatically generated by MyBatis Generator, do not modify.
       This element was generated on Thu Mar 03 13:12:13 CST 2022.
     -->
-    insert into item_info (id, title, price, 
+    insert into item_info (id, title, price,
       description, sales, img_url
       )
-    values (#{id,jdbcType=INTEGER}, #{title,jdbcType=VARCHAR}, #{price,jdbcType=DECIMAL}, 
+    values (#{id,jdbcType=INTEGER}, #{title,jdbcType=VARCHAR}, #{price,jdbcType=DECIMAL},
       #{description,jdbcType=VARCHAR}, #{sales,jdbcType=INTEGER}, #{imgUrl,jdbcType=VARCHAR}
       )
   </insert>
@@ -149,4 +149,9 @@
     from item_info
     order by sales DESC
   </select>
+  <update id="increaseSales">
+    update item_info
+    set sales = sales + #{amount}
+    where id = #{id,jdbcType=INTEGER}
+  </update>
 </mapper>

src/main/resources/mapping/ItemStockDOMapper.xml

@@ -114,4 +114,10 @@
     from item_stock
     where item_id = #{itemId,jdbcType=INTEGER}
   </select>
+  <update id="decreaseStock">
+    update item_stock
+    set stock = stock - #{amount},
+    item_id = #{itemId}
+    where item_id = #{itemId} and stock >= #{amount}
+  </update>
 </mapper>

src/main/resources/mapping/OrderDOMapper.xml

@@ -0,0 +1,157 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.cxyxiaomo.flashsale.dao.OrderDOMapper">
+  <resultMap id="BaseResultMap" type="com.cxyxiaomo.flashsale.dataobject.OrderDO">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      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" />
+    <result column="item_id" jdbcType="INTEGER" property="itemId" />
+    <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 Sat Mar 05 15:52:04 CST 2022.
+    -->
+    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 Sat Mar 05 15:52:04 CST 2022.
+    -->
+    select 
+    <include refid="Base_Column_List" />
+    from order_info
+    where id = #{id,jdbcType=VARCHAR}
+  </select>
+  <delete id="deleteByPrimaryKey" parameterType="java.lang.String">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Sat Mar 05 15:52:04 CST 2022.
+    -->
+    delete from order_info
+    where id = #{id,jdbcType=VARCHAR}
+  </delete>
+  <insert id="insert" 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 Sat Mar 05 15:52:04 CST 2022.
+    -->
+    insert into order_info (id, user_id, item_id, 
+      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}, 
+      #{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 Sat Mar 05 15:52:04 CST 2022.
+    -->
+    insert into order_info
+    <trim prefix="(" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        id,
+      </if>
+      <if test="userId != null">
+        user_id,
+      </if>
+      <if test="itemId != null">
+        item_id,
+      </if>
+      <if test="itemPrice != null">
+        item_price,
+      </if>
+      <if test="amount != null">
+        amount,
+      </if>
+      <if test="orderPrice != null">
+        order_price,
+      </if>
+      <if test="promoId != null">
+        promo_id,
+      </if>
+    </trim>
+    <trim prefix="values (" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        #{id,jdbcType=VARCHAR},
+      </if>
+      <if test="userId != null">
+        #{userId,jdbcType=INTEGER},
+      </if>
+      <if test="itemId != null">
+        #{itemId,jdbcType=INTEGER},
+      </if>
+      <if test="itemPrice != null">
+        #{itemPrice,jdbcType=DECIMAL},
+      </if>
+      <if test="amount != null">
+        #{amount,jdbcType=INTEGER},
+      </if>
+      <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 Sat Mar 05 15:52:04 CST 2022.
+    -->
+    update order_info
+    <set>
+      <if test="userId != null">
+        user_id = #{userId,jdbcType=INTEGER},
+      </if>
+      <if test="itemId != null">
+        item_id = #{itemId,jdbcType=INTEGER},
+      </if>
+      <if test="itemPrice != null">
+        item_price = #{itemPrice,jdbcType=DECIMAL},
+      </if>
+      <if test="amount != null">
+        amount = #{amount,jdbcType=INTEGER},
+      </if>
+      <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>
+  <update id="updateByPrimaryKey" 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 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},
+      promo_id = #{promoId,jdbcType=INTEGER}
+    where id = #{id,jdbcType=VARCHAR}
+  </update>
+</mapper>

src/main/resources/mapping/PromoDOMapper.xml

@@ -0,0 +1,152 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.cxyxiaomo.flashsale.dao.PromoDOMapper">
+  <resultMap id="BaseResultMap" type="com.cxyxiaomo.flashsale.dataobject.PromoDO">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Sat Mar 05 12:55:23 CST 2022.
+    -->
+    <id column="id" jdbcType="INTEGER" property="id" />
+    <result column="promo_name" jdbcType="VARCHAR" property="promoName" />
+    <result column="start_date" jdbcType="TIMESTAMP" property="startDate" />
+    <result column="end_date" jdbcType="TIMESTAMP" property="endDate" />
+    <result column="item_id" jdbcType="INTEGER" property="itemId" />
+    <result column="promo_item_price" jdbcType="DECIMAL" property="promoItemPrice" />
+  </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 Sat Mar 05 12:55:23 CST 2022.
+    -->
+    id, promo_name, start_date, end_date, item_id, promo_item_price
+  </sql>
+  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Sat Mar 05 12:55:23 CST 2022.
+    -->
+    select 
+    <include refid="Base_Column_List" />
+    from promo_info
+    where id = #{id,jdbcType=INTEGER}
+  </select>
+  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Sat Mar 05 12:55:23 CST 2022.
+    -->
+    delete from promo_info
+    where id = #{id,jdbcType=INTEGER}
+  </delete>
+  <insert id="insert" parameterType="com.cxyxiaomo.flashsale.dataobject.PromoDO">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Sat Mar 05 12:55:23 CST 2022.
+    -->
+    insert into promo_info (id, promo_name, start_date, 
+      end_date, item_id, promo_item_price
+      )
+    values (#{id,jdbcType=INTEGER}, #{promoName,jdbcType=VARCHAR}, #{startDate,jdbcType=TIMESTAMP}, 
+      #{endDate,jdbcType=TIMESTAMP}, #{itemId,jdbcType=INTEGER}, #{promoItemPrice,jdbcType=DECIMAL}
+      )
+  </insert>
+  <insert id="insertSelective" parameterType="com.cxyxiaomo.flashsale.dataobject.PromoDO">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Sat Mar 05 12:55:23 CST 2022.
+    -->
+    insert into promo_info
+    <trim prefix="(" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        id,
+      </if>
+      <if test="promoName != null">
+        promo_name,
+      </if>
+      <if test="startDate != null">
+        start_date,
+      </if>
+      <if test="endDate != null">
+        end_date,
+      </if>
+      <if test="itemId != null">
+        item_id,
+      </if>
+      <if test="promoItemPrice != null">
+        promo_item_price,
+      </if>
+    </trim>
+    <trim prefix="values (" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        #{id,jdbcType=INTEGER},
+      </if>
+      <if test="promoName != null">
+        #{promoName,jdbcType=VARCHAR},
+      </if>
+      <if test="startDate != null">
+        #{startDate,jdbcType=TIMESTAMP},
+      </if>
+      <if test="endDate != null">
+        #{endDate,jdbcType=TIMESTAMP},
+      </if>
+      <if test="itemId != null">
+        #{itemId,jdbcType=INTEGER},
+      </if>
+      <if test="promoItemPrice != null">
+        #{promoItemPrice,jdbcType=DECIMAL},
+      </if>
+    </trim>
+  </insert>
+  <update id="updateByPrimaryKeySelective" parameterType="com.cxyxiaomo.flashsale.dataobject.PromoDO">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Sat Mar 05 12:55:23 CST 2022.
+    -->
+    update promo_info
+    <set>
+      <if test="promoName != null">
+        promo_name = #{promoName,jdbcType=VARCHAR},
+      </if>
+      <if test="startDate != null">
+        start_date = #{startDate,jdbcType=TIMESTAMP},
+      </if>
+      <if test="endDate != null">
+        end_date = #{endDate,jdbcType=TIMESTAMP},
+      </if>
+      <if test="itemId != null">
+        item_id = #{itemId,jdbcType=INTEGER},
+      </if>
+      <if test="promoItemPrice != null">
+        promo_item_price = #{promoItemPrice,jdbcType=DECIMAL},
+      </if>
+    </set>
+    where id = #{id,jdbcType=INTEGER}
+  </update>
+  <update id="updateByPrimaryKey" parameterType="com.cxyxiaomo.flashsale.dataobject.PromoDO">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Sat Mar 05 12:55:23 CST 2022.
+    -->
+    update promo_info
+    set promo_name = #{promoName,jdbcType=VARCHAR},
+      start_date = #{startDate,jdbcType=TIMESTAMP},
+      end_date = #{endDate,jdbcType=TIMESTAMP},
+      item_id = #{itemId,jdbcType=INTEGER},
+      promo_item_price = #{promoItemPrice,jdbcType=DECIMAL}
+    where id = #{id,jdbcType=INTEGER}
+  </update>
+  <select id="selectByItemId" parameterType="java.lang.Integer" resultMap="BaseResultMap">
+    select
+    <include refid="Base_Column_List" />
+    from promo_info
+    where item_id = #{itemId,jdbcType=INTEGER}
+  </select>
+</mapper>

src/main/resources/mapping/SequenceDOMapper.xml

@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.cxyxiaomo.flashsale.dao.SequenceDOMapper">
+  <resultMap id="BaseResultMap" type="com.cxyxiaomo.flashsale.dataobject.SequenceDO">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Thu Mar 03 23:07:17 CST 2022.
+    -->
+    <id column="name" jdbcType="VARCHAR" property="name" />
+    <result column="current_value" jdbcType="INTEGER" property="currentValue" />
+    <result column="step" jdbcType="INTEGER" property="step" />
+  </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 23:07:17 CST 2022.
+    -->
+    name, current_value, step
+  </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 23:07:17 CST 2022.
+    -->
+    select 
+    <include refid="Base_Column_List" />
+    from sequence_info
+    where name = #{name,jdbcType=VARCHAR}
+  </select>
+  <delete id="deleteByPrimaryKey" parameterType="java.lang.String">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Thu Mar 03 23:07:17 CST 2022.
+    -->
+    delete from sequence_info
+    where name = #{name,jdbcType=VARCHAR}
+  </delete>
+  <insert id="insert" parameterType="com.cxyxiaomo.flashsale.dataobject.SequenceDO">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Thu Mar 03 23:07:17 CST 2022.
+    -->
+    insert into sequence_info (name, current_value, step
+      )
+    values (#{name,jdbcType=VARCHAR}, #{currentValue,jdbcType=INTEGER}, #{step,jdbcType=INTEGER}
+      )
+  </insert>
+  <insert id="insertSelective" parameterType="com.cxyxiaomo.flashsale.dataobject.SequenceDO">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Thu Mar 03 23:07:17 CST 2022.
+    -->
+    insert into sequence_info
+    <trim prefix="(" suffix=")" suffixOverrides=",">
+      <if test="name != null">
+        name,
+      </if>
+      <if test="currentValue != null">
+        current_value,
+      </if>
+      <if test="step != null">
+        step,
+      </if>
+    </trim>
+    <trim prefix="values (" suffix=")" suffixOverrides=",">
+      <if test="name != null">
+        #{name,jdbcType=VARCHAR},
+      </if>
+      <if test="currentValue != null">
+        #{currentValue,jdbcType=INTEGER},
+      </if>
+      <if test="step != null">
+        #{step,jdbcType=INTEGER},
+      </if>
+    </trim>
+  </insert>
+  <update id="updateByPrimaryKeySelective" parameterType="com.cxyxiaomo.flashsale.dataobject.SequenceDO">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Thu Mar 03 23:07:17 CST 2022.
+    -->
+    update sequence_info
+    <set>
+      <if test="currentValue != null">
+        current_value = #{currentValue,jdbcType=INTEGER},
+      </if>
+      <if test="step != null">
+        step = #{step,jdbcType=INTEGER},
+      </if>
+    </set>
+    where name = #{name,jdbcType=VARCHAR}
+  </update>
+  <update id="updateByPrimaryKey" parameterType="com.cxyxiaomo.flashsale.dataobject.SequenceDO">
+    <!--
+      WARNING - @mbg.generated
+      This element is automatically generated by MyBatis Generator, do not modify.
+      This element was generated on Thu Mar 03 23:07:17 CST 2022.
+    -->
+    update sequence_info
+    set current_value = #{currentValue,jdbcType=INTEGER},
+      step = #{step,jdbcType=INTEGER}
+    where name = #{name,jdbcType=VARCHAR}
+  </update>
+  <select id="getSequenceByName" parameterType="java.lang.String" resultMap="BaseResultMap">
+    select
+    <include refid="Base_Column_List" />
+    from sequence_info
+    where name = #{name,jdbcType=VARCHAR} for update
+  </select>
+</mapper>

src/main/resources/mybatis-generator.xml

@@ -7,7 +7,7 @@
     <context id="DB2Tables" targetRuntime="MyBatis3">
         <!-- 数据库链接地址账号密码 -->
         <jdbcConnection driverClass="com.mysql.jdbc.Driver"
-                        connectionURL="jdbc:mysql://127.0.0.1:3306/flashsale?serverTimezone=Asia/Shanghai"
+                        connectionURL="jdbc:mysql://127.0.0.1:3306/flashsale?serverTimezone=Asia/Shanghai&amp;useSSL=false"
                         userId="root"
                         password="111111">
         </jdbcConnection>
@@ -53,6 +53,15 @@
         <!--<table tableName="item_stock" domainObjectName="ItemStockDO" enableCountByExample="false"-->
         <!--       enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false"-->
         <!--       selectByExampleQueryId="false"></table>-->
+        <!--<table tableName="order_info" domainObjectName="OrderDO" enableCountByExample="false"-->
+        <!--       enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false"-->
+        <!--       selectByExampleQueryId="false"></table>-->
+        <!--<table tableName="sequence_info" domainObjectName="SequenceDO" enableCountByExample="false"-->
+        <!--       enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false"-->
+        <!--       selectByExampleQueryId="false"></table>-->
+        <!--<table tableName="promo_info" domainObjectName="PromoDO" enableCountByExample="false"-->
+        <!--       enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false"-->
+        <!--       selectByExampleQueryId="false"></table>-->
 
     </context>
 </generatorConfiguration>