【简洁版】springboot整合mybatis

第一步：引入mybatis依赖

<dependency>
   	<groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.1.2</version>
</dependency>

第二步：引入mysql数据库连接驱动依赖

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

第三步：修改application.xml配置文件

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: xxxx
    password: xxxxxx
    url: jdbc:mysql://[数据库ip]:[数据库port]/[数据库名称]?characterEncoding=utf-8&serverTimezone=UTC
mybatis:
  configuration: 
    # 控制台日志配置
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
  mapper-locations: classpath:mappers/*.xml

第四步：给mapper接口添加@Mapper注解

@Mapper
public interface UserMapper {
    
    
    int insert(User record);
    User selectByPrimaryKey(Integer id);
}

第五步：测试

@RunWith(SpringRunner.class)
@SpringBootTest
public class ApplicationTests {
    
    

    @Autowired
    UserMapper userMapper;

    User user;

    @Test
    public void insert() {
    
    
        user = new User();
        user.setUsername("uname");
        user.setPassword("123456");

        int row = userMapper.insert(user);
        System.out.println("此次成功插入了"+row+"条数据！！");
    }

    @Test
    public void selectByPrimaryKey() {
    
    
        User user = userMapper.selectByPrimaryKey(1);
        System.out.println(user);
    }

}