SpringBoot构建电商基础秒杀项目总结
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一、电商秒杀应用简介
- 商品列表页获取秒杀商品列表
- 进入商品详情页获取秒杀商品详情
- 秒杀开始后进入下单确认页下单并支付成功
一、SpringBoot搭建项目
1、创建项目
2、修改pom.xml文件
官方文档：https://spring.io/guides/gs/rest-service/
2.1 添加父pom
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
2.2 加入依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.1</version>
</dependency>
Mybatis接入SpringBoot项目
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.5</version>
<dependencies>
<!-- 注意这里plugin下的dependencies，Maven是无法识别的 -->
<!-- 比较骚的操作就是，先把下面的dependency放到外面project下面的dependencies -->
<!-- 然后去右侧工具条Maven执行Reimport，最后再把这些dependency放回来，再进行Reimport，来导入mybatis的插件 -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
</dependencies>
<executions>
<execution>
<id>mybatis generator</id>
<phase>package</phase>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<configuration>
<!--允许移动生成的文件-->
<verbose>true</verbose>
<!--允许自动覆盖文件（生产环境中千万不要这样做）-->
<overwrite>true</overwrite>
<configurationFile>
src/main/resources/mybatis-generator.xml
</configurationFile>
</configuration>
</plugin>
完整的pom.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.miaoshaproject</groupId>
<artifactId>miaosha</artifactId>
<version>1.0-SNAPSHOT</version>
<name>miaosha</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
<!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.7.1</version>
</plugin>
<plugin>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>3.0.0</version>
</plugin>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.5</version>
<dependencies>
<!-- 注意这里plugin下的dependencies，Maven是无法识别的 -->
<!-- 比较骚的操作就是，先把下面的dependency放到外面project下面的dependencies -->
<!-- 然后去右侧工具条Maven执行Reimport，最后再把这些dependency放回来，再进行Reimport，来导入mybatis的插件 -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
</dependencies>
<executions>
<execution>
<id>mybatis generator</id>
<phase>package</phase>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<configuration>
<!--允许移动生成的文件-->
<verbose>true</verbose>
<!--允许自动覆盖文件（生产环境中千万不要这样做）-->
<overwrite>true</overwrite>
<configurationFile>
src/main/resources/mybatis-generator.xml
</configurationFile>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
3、application.properties和mybatis-generator.xml文件
创建application.properties文件和mybatis-generator.xml文件
application.properties
server.port=8090
mybatis.mapper-locations=classpath:mapping/*.xml
spring.datasource.name=miaosha
spring.datasource.url=jdbc:mysql://localhost:3306/miaosha
spring.datasource.username=root
spring.datasource.password=123456
#使用druid数据源
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
Mybatis自动生成器的使用方式
mybatis-generator.xml
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<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://localhost:3306/miaosha"
userId="root"
password="123456">
</jdbcConnection>
<!--生成DataObject类存放位置-->
<javaModelGenerator targetPackage="com.miaoshaproject.dataobject" targetProject="src/main/java">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!--生成映射文件存放位置-->
<sqlMapGenerator targetPackage="mapping" targetProject="src/main/resources">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>
<!--生成Dao类存放位置-->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.miaoshaproject.dao" targetProject="src/main/java">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>
<!--生成对应表及类名-->
<table tableName="user_info" domainObjectName="UserDO"
enableCountByExample="false"
enableUpdateByExample="false"
enableDeleteByExample="false"
enableSelectByExample="false"
selectByExampleQueryId="false"></table>
<table tableName="user_password" domainObjectName="UserPasswordDO"
enableCountByExample="false"
enableUpdateByExample="false"
enableDeleteByExample="false"
enableSelectByExample="false"
selectByExampleQueryId="false"></table>
<!-- enableCountByExample="false"
enableUpdateByExample="false"
enableDeleteByExample="false"
enableSelectByExample="false"
selectByExampleQueryId="false"
这些属性是为了使得只生成简单查询的对应文件，去掉复杂查询的生成文件，因为一般开发中不太用的到-->
</context>
</generatorConfiguration>
在src目录下分别创建dao层和dataobject层，在resource目录下创建mapping目录
4、创建数据库
使用Navicat创建一个本地的miaosha的数据库，添加两张表user_info和user_password
user_info.sql
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for user_info
-- ----------------------------
DROP TABLE IF EXISTS `user_info`;
CREATE TABLE `user_info` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(64) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL DEFAULT '',
`gender` tinyint(SpringBoot构建电商基础秒杀项目总结