參考依賴：

<parent>
????<groupId>org.springframework.boot</groupId>
????<artifactId>spring-boot-starter-parent</artifactId>
????<version>2.1.9.RELEASE</version>
????<relativePath?/>
</parent>

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

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

<dependency>
????<groupId>org.projectlombok</groupId>
????<artifactId>lombok</artifactId>
????<scope>provided</scope>
</dependency>

<dependency>
????<groupId>com.baomidou</groupId>
????<artifactId>mybatis-plus-boot-starter</artifactId>
????<version>3.2.0</version>
</dependency>

<dependency>
????<groupId>mysql</groupId>
????<artifactId>mysql-connector-java</artifactId>
</dependency>

<!--MP依賴-->
<dependency>
????<groupId>com.baomidou</groupId>
????<artifactId>mybatis-plus-boot-starter</artifactId>
????<version>3.2.0</version>
</dependency>