1、导入pom.xml依赖
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.2.0</version>
</dependency>
2、配置数据源
1)、导入数据库的驱动。
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.32</version>
</dependency>
2)、在application.yml配置数据源相关信息
spring:
datasource:
username: root
password: root
url: jdbc:mysql://localhost:3306/db2
driver-class-name: com.mysql.jdbc.Driver
3、配置MyBatis-Plus
1)、使用@MapperScan

2)、告诉MyBatis-Plus,sql映射文件位置,在application.yml中统一配置

mybatis-plus:
mapper-locations: classpath:/mapper/**/*.xml #mapper映射路径
global-config:
db-config:
id-type: auto #设置主键自增