Spring整合MyBatis

Posted 2020-12-11 张坤

1）导入依赖

mybatis-spring mybatis的Spring兼容包，帮助Spring整合MyBatis

<dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis-spring</artifactId>
  <version>2.0.2</version>
</dependency>

c3p0 连接池

<dependency>
  <groupId>com.mchange</groupId>
  <artifactId>c3p0</artifactId>
  <version>0.9.5.2</version>
</dependency>

spring-test Spring整合JUnit测试

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-test</artifactId>
  <version>5.1.9.RELEASE</version>
</dependency>

spring-context Spring包

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context</artifactId>
  <version>5.1.9.RELEASE</version>
</dependency>

spring-jdbc 数据源需要依赖此包

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-jdbc</artifactId>
  <version>5.1.9.RELEASE</version>
</dependency>

junit必须4.12以上

<dependencies>
  <dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
    <scope>test</scope>
  </dependency>

2）Spring配置MyBatis

1、扫描包

2、配置数据源DataSource 设置为C3P0连接池数据源

3、配置工厂SqlSessionFactory

4、配置扫描器扫描Mapper接口，帮助创建接口代理对象

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns:context="http://www.springframework.org/schema/context"

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

<!--扫描组件-->

<context:component-scan base-package="com.mx.mybatis"/>

<!--配置数据源-->

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

<!--配置数据源属性-->

<property name="driverClass" value="com.mysql.cj.jdbc.Driver"/>

<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/database?serverTimezone=CST&amp;useSSL=false"/>

<property name="user" value="username"/>

<property name="password" value="password"/>

<property name="minPoolSize" value="10"/>

<property name="maxPoolSize" value="100"/>

<property name="initialPoolSize" value="10"/>

</bean>

<!--配置工厂-->

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

<!--配置数据源属性-->

<property name="dataSource" ref="dataSource"/>

<!--配置实体类包-->

<property name="typeAliasesPackage" value="com.mx.mybatis.entity"/>

<!--配置Mapper文件的位置 *通配符代表任意名称-->

<property name="mapperLocations" value="mapper/*Mapper.xml"/>

</bean>

<!--配置Mapper接口的扫描-->

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

<!--配置Mybatis工厂的名称 -->

<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>

<!--配置Mapper接口所在的包-->

<property name="basePackage" value="com.mx.mybatis.dao"/>

</bean>

</beans>

3）Spring整合JUnit测试

//指定JUnit版本

@RunWith(SpringJUnit4ClassRunner.class)

//引入Spring的配置文件

@ContextConfiguration(locations = "classpath:spring-mybatis.xml")

public class MyBatisSpringTest {

 

@Autowired

private UserMapper userMapper;

 

@Test

public void testUserMapper(){

List<User> users = userMapper.selectAll();

users.forEach((user)->System.out.println(user));

}

}