Cloud native application architecture design and development

Introduction

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This article will explain in detail how to build an Spring boot Mybatisenvironment, involving dependency configuration and sample code and test related code

Based on Spring Boot 2.3.4, Junit5

Step Instructions

    The final directory structure of the entire project is as follows, add a reference to a file or a newly created directory:

└─src
    ├─main
    │  ├─java
    │  │  └─com
    │  │      └─mall
    │  │          └─MallWeb
    │  │              ├─controllers
    │  │              ├─mapper
    │  │              ├─model
    │  │              └─services
    │  └─resources
    │      └─mybatis
    │          └─mapper
    └─test
        └─java
            └─com
                └─mall
                    └─MallWeb
                        └─mapper
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Database initialization statement

    The initialization statements of the database tables are all below, and you can also modify them according to your own situation.

CREATE DATABASE  IF NOT EXISTS `mall`;

USE `mall`;

CREATE TABLE IF NOT EXISTS `users` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(16) NOT NULL,
  `password` varchar(16) NOT NULL,
  `phoneNumber` varchar(15) NOT NULL,
  `money` int(11) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=latin1;
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build.gradle: dependency added

    Need to add the following dependencies

• 'mysql:mysql-connector-java:8.0.14'
• 'org.mybatis.spring.boot:mybatis-spring-boot-starter:2.0.0'
• 'org.projectlombok:lombok:1.16.16'

dependencies {
	implementation 'org.springframework.boot:spring-boot-starter-web'

	//	MySQL数据库需要
	implementation 'mysql:mysql-connector-java:8.0.14'
	//	spring mybatis
	implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:2.0.0'
	//	lombok,用于Entity的自动get和set方法生成，不用自己写一大推的get和set方法
	implementation 'org.projectlombok:lombok:1.16.16'

	testImplementation('org.springframework.boot:spring-boot-starter-test') {
		exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
	}
}
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application.properties: Configuration added

    When writing the configuration file, you need to pay attention to the configuration of the parameters. For example, the SSL one should generally be set to false, and the driver-class-name should also be paid attention to. Don’t make a mistake. The general content of the file is as follows:

# gradle
# mybatis的config文件位置配置
mybatis.config-location=classpath:mybatis/mybatis-config.xml
# 各个表的xml文件位置配置
mybatis.mapper-locations=classpath:mybatis/mapper/*.xml
mybatis.type-aliases-package=com.neo.model

# 数据库连接信息配置，自行更换数据库，用户名和密码
spring.datasource.url=jdbc:mysql://localhost:3306/mall?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8\
  &useSSL=false
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

#springboot + mybatis设置将SQL语句打印到控制台
logging.level.com.mall.MallWeb.mapper=debug
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