依赖

<!--mybatis-->
<dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>2.1.1</version>
</dependency>
<!--jdbc-->
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--数据库驱动-->
<dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope>
</dependency>

application.yml

spring:datasource:driver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTCusername: rootpassword: root
# 整合 mybatis
mybatis:# 别名配置type-aliases-package: org.example.pojo# 映射文件绑定（classpath 代表 java 或 resources 目录）mapper-locations: classpath:mybatis/mapper/*.xml

UserMapper.java

// 声明为 mybatis 的 mapper
@Mapper
// 或者在启动类上使用注解扫描 mapper 包
// @MapperScan("org.example.mapper")
public interface UserMapper {List<User> selectUserList();
}

controller

@RestController
public class UserController {@Autowiredprivate UserMapper userMapper;@GetMapping("/userList")public List<User> getUserList(){return userMapper.selectUserList();}
}