从零搭建基于SpringBoot的秒杀系统(二)：快速搭建一个SpringBoot项目
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2022-07-14 08:17:26
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首先我们快速搭建一个SpringBoot项目出来，因此这个项目的重心在后端逻辑，因此前端页面简单搭建：
CREATE TABLE `item` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(255) DEFAULT NULL COMMENT '商品名',
`code` varchar(255) DEFAULT NULL COMMENT '商品编号',
`stock` bigint(20) DEFAULT NULL COMMENT '库存',
`purchase_time` date DEFAULT NULL COMMENT '采购时间',
`is_active` int(11) DEFAULT '1' COMMENT '是否有效（1=是；0=否）',
`create_time` datetime DEFAULT NULL,
`update_time` timestamp NULL DEFAULT NULL COMMENT '更新时间',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='商品表'CREATE TABLE `item_kill` (
`id` int(20) NOT NULL AUTO_INCREMENT COMMENT '主键id',
`item_id` int(11) DEFAULT NULL COMMENT '商品id',
`total` int(11) DEFAULT NULL COMMENT '可被秒杀的总数',
`start_time` datetime DEFAULT NULL COMMENT '秒杀开始时间',
`end_time` datetime DEFAULT NULL COMMENT '秒杀结束时间',
`is_active` tinyint(11) DEFAULT '1' COMMENT '是否有效（1=是；0=否）',
`create_time` timestamp NULL DEFAULT NULL COMMENT '创建的时间',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='待秒杀商品表'item_kill_success秒杀成功订单表，存放秒杀成功的订单
CREATE TABLE `item_kill_success` (
`code` varchar(50) NOT NULL COMMENT '秒杀成功生成的订单编号',
`item_id` int(11) DEFAULT NULL COMMENT '商品id',
`kill_id` int(11) DEFAULT NULL COMMENT '秒杀id',
`user_id` varchar(20) DEFAULT NULL COMMENT '用户id',
`status` tinyint(4) DEFAULT '-1' COMMENT '秒杀结果: -1无效 0成功(未付款) 1已付款 2已取消',
`create_time` timestamp NULL DEFAULT NULL COMMENT '创建时间',
PRIMARY KEY (`code`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='秒杀成功订单表'CREATE TABLE `user` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`user_name` varchar(100) CHARACTER SET utf8mb4 NOT NULL COMMENT '用户名',
`password` varchar(200) CHARACTER SET utf8mb4 NOT NULL COMMENT '密码',
`phone` varchar(50) NOT NULL COMMENT '手机号',
`email` varchar(100) CHARACTER SET utf8mb4 NOT NULL COMMENT '邮箱',
`is_active` tinyint(11) DEFAULT '1' COMMENT '是否有效(1=是；0=否)',
`create_time` datetime DEFAULT NULL COMMENT '创建时间',
`update_time` timestamp NULL DEFAULT NULL COMMENT '更新时间',
PRIMARY KEY (`id`),
UNIQUE KEY `idx_user_name` (`user_name`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='用户信息表'新建一个springboot项目，命名为SecondKill，项目结构如下所示：
接下来引入依赖，为了让大家免受maven无法引入的痛苦，我在项目中加入了阿里的镜像，现在引入依赖应该不会受到网络的影响。
<?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>org.example</groupId>
<artifactId>SecondKill</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
<java.compiler.source>${java.version}</java.compiler.source>
<java.compiler.target>${java.version}</java.compiler.target>
<spring-boot.version>2.1.7.RELEASE</spring-boot.version>
<spring-session.version>1.2.0.RELEASE</spring-session.version>
<slf4j.version>1.7.12</slf4j.version>
<log4j.version>1.2.17</log4j.version>
<mysql.version>5.1.37</mysql.version>
<druid.version>1.1.10</druid.version>
<guava.version>19.0</guava.version>
<joda-time.version>2.10.3</joda-time.version>
<zookeeper.version>3.4.14</zookeeper.version>
<curator.version>2.12.0</curator.version>
<shiro.version>1.4.2</shiro.version>
<gson.version>2.8.5</gson.version>
<redisson.version>3.8.2</redisson.version>
<common-lang.version>3.8.1</common-lang.version>
<thymeleaf-layout-dialect.version>2.1.1</thymeleaf-layout-dialect.version>
</properties>
<repositories>
<repository>
<id>alimaven</id>
<name>Maven Aliyun Mirror</name>
<url>http://maven.aliyun.com/nexus/content/repositories/central/</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<!-- 依赖管理 -->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.2.3</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!--guava-->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
</dependency>
<!-- time -->
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>${joda-time.version}</version>
</dependency>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!--druid-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<!--spring-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>${spring-boot.version}</version>
<exclusions>
<exclusion>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>log4j-over-slf4j</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
<exclusion>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- jsp 支持 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<!-- zookeeper start -->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>${zookeeper.version}</version>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
<exclusion>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-framework</artifactId>
<version>${curator.version}</version>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-recipes</artifactId>
<version>${curator.version}</version>
</dependency>
<!--for test-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!--shiro权限控制-->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-ehcache</artifactId>
<version>${shiro.version}</version>
</dependency>
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-core</artifactId>
<version>${shiro.version}</version>
</dependency>
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-web</artifactId>
<version>1.4.0</version>
</dependency>
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring</artifactId>
<version>${shiro.version}</version>
</dependency>
<!-- gson -->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>${gson.version}</version>
</dependency>
<!-- redis -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-redis</artifactId>
<version>1.3.5.RELEASE</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.3</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<!--rabbitmq-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
<version>${spring-boot.version}</version>
</dependency>
<!--redisson-->
<dependency>
<groupId>org.redisson</groupId>
<artifactId>redisson</artifactId>
<version>${redisson.version}</version>
</dependency>
<!--common-lang3-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${common-lang.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.8</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<!--json-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.9.0</version>
<!--<scope>compile</scope>-->
</dependency>
</dependencies>
<build>
<finalName>kill-${project.parent.version}</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring-boot.version}</version>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>6</source>
<target>6</target>
</configuration>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
</build>
</project>package com.sdxb.secondkill;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.annotation.ImportResource;
@SpringBootApplication
@ImportResource(value = {"classpath:spring/spring-jdbc.xml"})
public class MainApplication extends SpringBootServletInitializer {
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(MainApplication.class);
}
public static void main(String[] args) {
SpringApplication.run(MainApplication.class,args);
}
}在application.properties中配置数据库的连接信息和mybatis的配置信息：（换成自己的数据库信息）
#数据源配置
datasource.url=jdbc:mysql://127.0.0.1:3306/db_second_kill?useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull
datasource.username=root
datasource.password=123456<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
" >
<!--主数据源 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close" primary="true" >
<!-- 基本属性 url、user、password -->
<property name="url" value="${datasource.url}" />
<property name="username" value="${datasource.username}" />
<property name="password" value="${datasource.password}" />
<!-- 配置初始化大小、最小、最大 -->
<property name="initialSize" value="10" />
<property name="minIdle" value="10" />
<property name="maxActive" value="20" />
<!-- 配置获取连接等待超时的时间 -->
<property name="maxWait" value="60000" />
<!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
<property name="timeBetweenEvictionRunsMillis" value="60000" />
<!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
<property name="minEvictableIdleTimeMillis" value="300000" />
<property name="validationQuery" value="SELECT 1 " />
<property name="testWhileIdle" value="true" />
<property name="testOnBorrow" value="false" />
<property name="testOnReturn" value="false" />
<!-- 打开PSCache，并且指定每个连接上PSCache的大小 -->
<property name="poolPreparedStatements" value="true" />
<property name="maxPoolPreparedStatementPerConnectionSize" value="20" />
<!-- 配置监控统计拦截的filters，去掉后监控界面sql无法统计 -->
<property name="filters" value="stat" />
</bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>在mybatis-config.xml中配置mybatis，主要是开启缓存，设置默认数据库超时时间以及开启驼峰命名规则，可以把数据库中类似user_id的字段解析为userId。
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<!-- Globally enables or disables any caches configured in any mapper under this configuration -->
<setting name="cacheEnabled" value="true"/>
<!-- Sets the number of seconds the driver will wait for a response from the database -->
<setting name="defaultStatementTimeout" value="3000"/>
<!-- Enables automatic mapping from classic database column names A_COLUMN to camel case classic Java property names aColumn -->
<setting name="mapUnderscoreToCamelCase" value="true"/>
<!-- Allows JDBC support for generated keys. A compatible driver is required.
This setting forces generated keys to be used if set to true,
as some drivers deny compatibility but still work -->
<setting name="useGeneratedKeys" value="true"/>
<!-- 设置控制台打印sql -->
<!--<setting name="logImpl" value="stdout_logging" />-->
</settings>
</configuration>以上都是基础配置，接下来创建一个测试Controller和测试页面测试项目是否启动成功，在controller包下新建一个testController
package com.sdxb.secondkill.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class testController {
@RequestMapping(value = "/test",method = RequestMethod.GET)
public String index(){
return "test";
}
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
test
</body>
</html>运行项目，访问地址http://localhost:8080/test，页面上显示test，表示项目构建成功。
到现在为止的代码放在github上，https://github.com/OliverLiy/SecondKill/tree/version1.0
我搭建了一个微信公众号《Java鱼仔》，如果你对本项目有任何疑问，欢迎在公众号中联系我，我会尽自己所能为大家解答。