关于spring整合mybatis

第一步导入依赖

<dependencies>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.7</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.46</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.2.10.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.10.RELEASE</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.7</version>
</dependency>
<!--spring事务-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.2.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.13</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.10.RELEASE</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.16</version>
</dependency>
</dependencies>

第二部获取必要的bean以及applicationContext.xml配置文件

<?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:p="http://www.springframework.org/schema/p"
xmlns:c="http://www.springframework.org/schema/c"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://127.0.0.1:3306/happy?useSSL=false"/>
<property name="username" value="root"/>
<property name="password" value="889886hp"/>
</bean>
<!-- 获取sqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:mybatis-config.xml"/>

<!-- 在mybatis.xml配置文件已经配置mapper映射的时候就不需要在配置了 -->
<property name="mapperLocations" value="classpath:com/swun/mapper/Tb_randMapper.xml"/>
</bean>
<!-- 获取sqlSessionTemplate-->
<bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg index="0" ref="sqlSessionFactory"/>
</bean>

</beans>

需要实现接口类如

<bean id="tb_brandMapperImpl" class="com.swun.mapper.impl.Tb_brandMapperImpl">
    <property name="sqlSessionTemplate" ref="sqlSessionTemplate"/>
</bean>

 另一种使用继承SQLSessionDaoSupport的方式

不需要引入SQLSessionTemplate

<!--    使用继承SqlSessionDaoSupport的方式-->
    <bean id="tb_brandMapperImpl2" class="com.swun.mapper.impl.Tb_brandMapperImpl2">
        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
    </bean>

 

 直接扫描接口的方式（推荐方式）

需要service层的接口和dao层接口有相同方法，但不一定全部实现（不需要extend已经implement），dao层里面的@param注解也不需要，然后在由service层的实现类注入dao层接口

<!-- 4. 配置dao接口扫描包,动态的实现了Dao接口可以注入到Spring容器中! -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--        注入sqlSessionFactory-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--        给出需要扫描的Dao接口包  -->
        <property name="basePackage" value="com.inspur.dao"/>
    </bean>

 

 然后就是编写测试类

@Test
public void testAnn(){
    //获取ioc容器
    ApplicationContext Context = new ClassPathXmlApplicationContext("applicationContext.xml");
    Tb_brandMapper tb_brandMapper = (Tb_brandMapper) Context.getBean("tb_brandMapperImpl");

    //Tb_brandMapper tb_brandMapper = (Tb_brandMapper) Context.getBean("tb_brandMapperImpl2");

    List<Tb_brand> tb_brands = tb_brandMapper.selectAll();
    for (Tb_brand tb_brand : tb_brands) {
        System.out.println(tb_brand);
    }

}


声明事务

<!--        声明事务-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <constructor-arg ref="dataSource"/>
</bean>
<!--    实现事务注入（AOP）-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
    <tx:attributes>
        <tx:method name="*" propagation="REQUIRED"/>
    </tx:attributes>
</tx:advice>
<!--    配置事务注入-->
<aop:config>
    <aop:pointcut id="txPointCut" expression="execution(* com.swun.mapper*.*(..))"/>
    <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
</aop:config>