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简单秒杀项目简介
2022-07-13 17:55:00 【早日拿offer】
通过使用SpringBoot快速搭建前后端分离的电商基础秒杀项目。项目中会通过应用领域驱动型的分层模型设计方式去完成用户otp注册、登陆、查看、商品列表、进入商品详情以及倒计时秒杀开始后下单购买的基本流程。
电商秒杀项目简介：
1、商品列表页获取秒杀商品列表
2、进入商品详情页获取秒杀商品详情
3、秒杀开始后进入下单确认页下单并支付成功
使用SpringBoot完成基础项目搭建
使用IDEA+Maven搭建SpringBoot开发环境。
引入依赖
pom.xml(后续项目所需的所有依赖)
包括springboot的web启动器：spring-boot-starter-web
数据库相关依赖：mysql-connector-join,mybatis-spring-boot-starter等等
<?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>
<artifactId>spring-boot-starter-parent</artifactId>
<groupId>org.springframework.boot</groupId>
<version>2.5.5</version>
</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>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot </groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.41</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>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.7</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.2.4.Final</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.9.1</version>
</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>
<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>5.1.41</version>
</dependency>
</dependencies>
<executions>
<execution>
<id>mybatis generotor</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-->
<overwrite>false</overwrite>
<configurationFile>
src/main/resources/mybatis-generator.xml
</configurationFile>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>8</source>
<target>8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
mybatis自动生成器
mybatis-generator.xml：根据数据库的表生成相应的dao,dataobject,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>
<!--驱动包的路径-->
<!--<classPathEntry location="C:\Users\lhf\.m2\repository\mysql\mysql-connector-java\5.1.46\mysql-connector-java-5.1.46.jar" />-->
<!--数据库连接-->
<context id="DB2Tables" targetRuntime="MyBatis3">
<!--注释-->
<!--<commentGenerator> <property name="suppressAllComments" value="true"/> <property name="suppressDate" value="true"/> </commentGenerator>-->
<!--数据库连接地址及账号密码-->
<jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://127.0.0.1:3306/miaosha?useSSL=false" userId="root" password="123456">
</jdbcConnection>
<!--<javaTypeResolver > <property name="forceBigDecimals" value="false" /> </javaTypeResolver>-->
<!--生成DataObject类存放位置-->
<javaModelGenerator targetPackage="com.miaoshaproject.dataobject" targetProject="src/main/java">
<!--是否对Model添加构造函数-->
<!--<property name="constructorBased" value="false"/>-->
<!--是否允许子包-->
<property name="enableSubPackages" value="true"/>
<!--建立的model对象是否不可变，也就是生成的model没有setter方法-->
<!--<property name="immutable" value="false"/>-->
<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类的存放位置-->
<!-- 客户端代码,生成易于使用的正对Model对象和XML配置文件的代码 type="ANNOTATEDMAPPER", 生成Java Model和基于注解的Mapper对象 type="MIXEDMAPPER", 生成基于注解的Java Model和相应的Mapper对象 type="XMLMAPPER", 生成SQLMap XML文件和独立的Mapper接口 -->
<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 schema="mybatis" tableName="user_info" domainObjectName="UserDO" enableInsert="true" enableSelectByExample="false" enableDeleteByPrimaryKey="false" enableDeleteByExample="false" enableCountByExample="false" enableUpdateByExample="false" enableSelectByPrimaryKey="true" enableUpdateByPrimaryKey="true"/>-->
<!--<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> <table tableName="item" domainObjectName="ItemDO" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table> <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" domainObjectName="PromoDO" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
</context>
</generatorConfiguration>
App类
将App类被spring托管@SpringBootApplication(ScanBasePackage={“com.miaoshaproject”})
package com.miaoshaproject;
import com.miaoshaproject.dao.UserDOMapper;
import com.miaoshaproject.dataobject.UserDO;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/** * Hello world! * */
@SpringBootApplication(scanBasePackages= {
"com.miaoshaproject"})
@RestController
@MapperScan("com.miaoshaproject.dao")
public class App
{
@Autowired
private UserDOMapper userDOMapper;
@RequestMapping("/")
public String home() {
UserDO userDO = userDOMapper.selectByPrimaryKey(1);
if(userDO == null) {
return "用户对象不存在";
} else {
return userDO.getName();
}
}
public static void main( String[] args )
{
System.out.println( "Hello World!" );
SpringApplication.run(App.class, args);
}
}
mybatis配置文件
application.properties
注意映射的xml文件地址不出错
server.port=8090
mybatis.mapper-locations=classpath:mapping/*.xml
spring.datasource.name=miaosha
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/miaosha?useSSL=false
spring.datasource.username=root
spring.datasource.password=123456
# 使用druid数据源
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driverClassName=com.mysql.jdbc.Driver
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