交易下单2-添加sequence_info表并自动生成Mapper

Others/sql/flashsale.sql

@@ -11,7 +11,7 @@
  Target Server Version : 50726
  File Encoding         : 65001
 
- Date: 03/03/2022 22:01:38
+ Date: 03/03/2022 23:08:26
 */
 
 SET NAMES utf8mb4;
@@ -100,6 +100,22 @@ CREATE TABLE `order_info`  (
 -- Records of order_info
 -- ----------------------------
 
+-- ----------------------------
+-- Table structure for sequence_info
+-- ----------------------------
+DROP TABLE IF EXISTS `sequence_info`;
+CREATE TABLE `sequence_info`  (
+  `name` varchar(255) 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', 0, 1);
+
 -- ----------------------------
 -- Table structure for user_info
 -- ----------------------------

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

@@ -0,0 +1,53 @@
+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);
+}

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/service/impl/OrderServiceImpl.java

@@ -16,6 +16,8 @@ import org.springframework.stereotype.Service;
 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 {
@@ -83,13 +85,19 @@ public class OrderServiceImpl implements OrderService {
     }
 
     // 生成交易流水号，订单号
-    private String generateOderNo(){
+    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
 
         // 最后2位为分库分表位
-
+        stringBuilder.append("00"); // 暂时写死
+        return "";
     }
 }

src/main/resources/mapping/SequenceDOMapper.xml

@@ -0,0 +1,111 @@
+<?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>
+</mapper>

src/main/resources/mybatis-generator.xml

@@ -56,6 +56,9 @@
         <!--<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>-->
 
     </context>
 </generatorConfiguration>