springboot整合mybatis实现数据库操作

1、创建springboot项目，过程忽略，详细参考我已写好的springboot环境搭建：https://mp.youkuaiyun.com/postedit/90175419

2、搭建好之后，大致目录如下图

3、pom.xml

<!-- jdbc两种方式 -->
<!--<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>-->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.9</version>
</dependency>
<!-- 引入前端web，此注解不存在Controller层注解会报一系列错误 -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- mybatis -->
<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.1.1</version>
</dependency>
<!-- 引入mysql依赖，解决application-dev.xml中驱动driver-class-name无法加载问题 -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <scope>runtime</scope>
</dependency>

4、application.yml

spring:
  profiles:
    active: dev

5、在resources目录下新建application-dev.yml和application-prod.yml配