springboot整合Mybatis

pom.xml

中引入依赖

这里用到spring-boot-starter基础和spring-boot-starter-test用来做单元测试验证数据访问

引入连接mysql的必要依赖mysql-connector-java

引入整合MyBatis的核心依赖mybatis-spring-boot-starter

这里不引入spring-boot-starter-jdbc依赖，是由于mybatis-spring-boot-starter中已经包含了此依赖

<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.3.2.RELEASE</version> <relativePath/> <!-- lookup parent from repository --></parent><dependencies> <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.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.1.1</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.21</version> </dependency></dependencies>

application.properties

中配置mysql的连接配置

#springboot整合mybatis框架
#加载Mybatis配置文件 相当于spring扫描
mybatis.mapper-locations=classpath:mapper/*Mapper.xml
#mybatis.config-location=classpath:mapper/config/sqlMapperConfig.xml
#定义别名
mybatis.type-aliases-package=com.example.demo.pojo
#数据源
spring.datasource.url=jdbc:mysql://101.200.230.153:3306/user?useUnicode=true&characterEncoding=UTF-8
spring.datasource.username=root
spring.datasource.password=123
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
#配置端口
server.port=8082

编写User实体类

public class User {
private Long id;
private String name;
private Integer age;
//省略get/set

编写Mapper接口类

@Mapper
public interface UserMapper {
//查询所有用户
List<User> findAll();
}

编写UserService

public interface UserService {
//查询所有用户
List<User> findAll();
}

编写UserService实现类

@Service
public class UserServiceImpl implements UserService {
//注入mapper代理接口对象
@Autowired
private UserMapper userMapper;
@Override
public List<User> findAll() {
return userMapper.findAll();
}
}

编写Controller

@RestController
public class UserController {
//注入Service服务对象
@Autowired
private UserService userService;
/**
* 查询用户
*/
@RequestMapping("/user")
public List<User> findAll(){
return userService.findAll();
}
}

UserMapper类

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.example.demo.mapper.UserMapper" >

<!--namespace跟Mapper路径一致-->

<select id="findAll" resultType="com.example.demo.pojo.User"> select * FROM user </select></mapper>
运行springboot项目出现下面的页面 



这样简单的springboot整合mybatis就完成了