SpringBoot + MyBatis + MySQL + Maven在Intellij IDEA下开发环境的搭建

最近项目中要用SpringBoot + MyBatis + MySQL + Maven的开发环境。经过一晚上折腾，终于搭建了开发环境。以下为环境搭建过程。

1.新建一个Spring工程

填写项目信息。Type选择Maven Project即可



选择依赖时，选择web下的web。以及SQL下的JPA，MyBatis，MySQL。





之后，一路点击next即可完成工程的创建。

2.配置pom文件

以下是pom.xml的完整配置

<?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.aim.demo</groupId>
<artifactId>demo</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>jar</packaging>

<name>demo</name>
<description>Demo project for Spring Boot of Aim</description>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>

<dependencies>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>1.3.6.RELEASE</version>
</dependency>

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>

<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

3.Mybatis配置

新建一个 MybatisConfig类

@Configuration // @Configuration注解（该注解类似于spring的配置文件）
@MapperScan(basePackages = "com.aim.demo.dao")// @MapperScan注解，指定扫描的mapper接口所在的包
public class MybatisConfig implements EnvironmentAware {
private static final Logger logger = LoggerFactory.getLogger(MybatisConfig.class);

@Autowired
private Environment env;

@Override
public void setEnvironment(Environment environment) {
this.env = environment;
}

/**
* 创建数据源
* @Primary 该注解表示在同一个接口有多个实现类可以注入的时候，默认选择哪一个，而不是让@autowire注解报错
*/
@Bean
@Primary
public DataSource getDataSource() throws Exception{
Properties props = new Properties();
props.put("driverClassName", env.getProperty("spring.datasource.driver-class-name"));
props.put("url", env.getProperty("spring.datasource.url"));
props.put("username", env.getProperty("spring.datasource.username"));
props.put("password", env.getProperty("spring.datasource.password"));
return DruidDataSourceFactory.createDataSource(props);
}

/**
* 根据数据源创建SqlSessionFactory
*/
@Bean
public SqlSessionFactory sqlSessionFactory(DataSource ds) throws Exception{
SqlSessionFactoryBean fb = new SqlSessionFactoryBean();
fb.setDataSource(ds);//指定数据源(这个必须有，否则报错)
//下边两句仅仅用于*.xml文件，如果整个持久层操作不需要使用到xml文件的话（只用注解就可以搞定），则不加
fb.setTypeAliasesPackage(env.getProperty("mybatis.typeAliasesPackage"));//指定基包
fb.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(env.getProperty("mybatis.mapperLocations")));//指定xml文件位置
return fb.getObject();
}
}

4.application.yml配置

在这里配置数据库连接及mybatis默认mapper地址和基包

#默认使用配置
spring:
profiles:
active: dev

#公共配置与profiles选择无关
mybatis:
typeAliasesPackage: com.aim.demo.dao.entity
mapperLocations: classpath:mapper/*.xml

---

#开发配置
spring:
profiles: dev

datasource:
url: jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull
username: root
password: 123456
driver-class-name: com.mysql.jdbc.Driver

到此，SpringBoot + MyBatis + MySQL + Maven在Intellij IDEA下开发环境的搭建就已经结束了。

编写mapper文件及对应接口，即可对数据库进行相关操作了。