spring boot整合mybatis框架

1、推荐使用intellij idea作为开发工具，使用intellij idea创建spring boot框架，如下图所示，添加maven依赖，代码如下

                 <dependency>

                            <groupId>org.mybatis.spring.boot</groupId>

                            <artifactId>mybatis-spring-boot-starter</artifactId>

                            <version>1.3.2</version>

                   </dependency>

                   <dependency>

                            <groupId>mysql</groupId>

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

                            <scope>runtime</scope>

                   </dependency>

2、创建一个TestMapper.java文件，代码如下

/**

 * Created by zuli on 2018/10/10.

 */

public interface TestMapper {

    int test();

}

3、在resources目录下创建TestMapper.xml文件，代码如下

<?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.zuli.mapper.TestMapper">

    <select id="test" resultType="int">

        SELECT 1 FROM DUAL

    </select>

</mapper>

4、添加@MapperScan()注解，配置basePackages属性，代码如下

@SpringBootApplication

@MapperScan(basePackages = "com.zuli.mapper")

public class SpringBootMybatisApplication {

         public static void main(String[] args) {

                   ConfigurableApplicationContext context =

                                     SpringApplication.run(SpringBootMybatisApplication.class, args);

                   TestMapper testMapper = context.getBean(TestMapper.class);

                   System.out.println(testMapper.test());

         }

}

5、修改application.properties配置文件，配置数据源，mapper xml文件路径等代码如下

spring.datasource.url=jdbc:mysql://localhost/test

spring.datasource.username=root

spring.datasource.password=123456

spring.datasource.driver-class-name=com.mysql.jdbc.Driver

mybatis.mapper-locations=classpath:*Mapper.xml

6、启动应用程序，调用TestMapper的test()方法，打印日志，如下图所示

7、整体demo的项目结构如下图所示