搭建工程
创建项目和依赖
创建项目
官方地址：
logback配置：
https://logback.qos.ch/manual/configuration.html
spring配置：
https://docs.spring.io/spring/docs/
mybatis配置：
http://www.mybatis.org/mybatis-3/zh/index.html
maven命令创建web骨架项目
mvn archetype:generate -DarchetypeCatalog=internal -DgroupId=org.seckill -DartifactId=seckill -DarchetypeArtifactId=maven-archetype-webapp
用idea加载pom.xml文件加载maven web项目
修改servlet版本为3.1：
拷贝Tomcat中web项目的web.xml头文件到webapp/web.xml中
把web项目没有的补全：
project structor->Modules，找到项目补全
这里写图片描述
项目依赖
<dependencies>
<dependency>
<!-- 使用junit4 -->
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- 补全项目依赖 -->
<!-- 1:日志 java日志:slf4j,log4j,logback,common-logging
slf4j 是规范/接口
日志实现:log4j,logback,common-logging
使用:slf4j + logback
-->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.12</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.1.1</version>
</dependency>
<!-- 实现slf4j接口并整合 -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.1</version>
<scope>test</scope>
</dependency>
<!-- 2.数据库相关依赖 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
<scope>runtime</scope>
</dependency>
<!-- 数据库连接池 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!-- DAO框架:MyBatis依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.3.0</version>
</dependency>
<!-- mybatis自身实现的spring整合依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.3</version>
</dependency>
<!-- 3.Servlet web相关依赖 -->
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.4</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- 4.spring依赖 -->
<!-- 4.1.spring核心依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<!-- 4.2.spring dao层的依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<!-- 4.3.spring web相关依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<!-- 4.4.spring test相关依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.1.7.RELEASE</version>
<scope>test</scope>
</dependency>
</dependencies>
秒杀业务分析
秒杀业务分析
这里写图片描述
DAO层设计与开发
数据库设计与编码
-- 数据库初始化脚本
-- 创建数据库
CREATE DATABASE seckill;
-- 使用数据库
use seckill;
-- 创建秒杀库存表
CREATE TABLE seckill(
`seckill_id` bigint NOT NULL AUTO_INCREMENT COMMENT '商品库存id',
`name` VARCHAR (120) NOT NULL COMMENT '商品名称',
`number` INT NOT NULL COMMENT '库存数量',
`start_time` TIMESTAMP NOT NULL COMMENT '秒杀开启时间',
`end_time` TIMESTAMP NOT NULL COMMENT '秒杀结束时间',
`create_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
PRIMARY KEY (seckill_id),
KEY idx_start_time(start_time),
KEY idx_end_time(end_time),
KEY idx_create_time(create_time)
)ENGINE=InnoDB AUTO_INCREMENT=1000 DEFAULT CHARSET=utf8 COMMENT='秒杀库存表';
-- 初始化数据
INSERT INTO
seckill(name,number,start_time,end_time)
VALUE
('1000元秒杀iphone6',100,'2015-11-01 00:00:00','2015-11-02 00:00:00'),
('500元秒杀ipad2',200,'2015-11-01 00:00:00','2015-11-02 00:00:00'),
('300元秒杀小米4',300,'2015-11-01 00:00:00','2015-11-02 00:00:00'),
('200元秒杀红米note',400,'2015-11-01 00:00:00','2015-11-02 00:00:00');
-- 秒杀成功明细表
-- 用户登录认证相关的信息
CREATE TABLE success_killed(
`seckill_id` bigint NOT NULL COMMENT '秒杀商品id',
`user_phone` bigint NOT NULL COMMENT '用户手机号',
`state` tinyint NOT NULL DEFAULT -1 COMMENT '状态标识:-1:无效 0:成功 1:已付款 2:已发货',
`create_time` TIMESTAMP NOT NULL COMMENT '创建时间',
PRIMARY KEY (seckill_id,user_phone),/*联合主键*/
KEY idx_create_time(create_time)
)ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='秒杀成功明细表';
-- 连接数据库控制台
mysql -uroot -p
-- 查看表结构
show tables;
-- 查看表是怎么创建的以及注释是什么
show create table seckill\G
-- 查看表数据
select * from seckill;
select * from success_killed;
