myBatis-08 与Spring的整合

1、pom.xml配置

多引入：

1）spring-test

2）druid

3）mybatis-spring

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://maven.apache.org/POM/4.0.0"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.rui</groupId>
    <artifactId>04QuickExample</artifactId>
    <version>1.0-SNAPSHOT</version>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>7</source>
                    <target>7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.3.0</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>5.3.0</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>5.3.0</version>
        </dependency>

        <!--jdbcTemplate-->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.0</version>
        </dependency>

        <!--spring测试-->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.3.8</version>
            <scope>test</scope>
        </dependency>

        <!--阿里的数据源-->
        <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.0</version>
        </dependency>

        <!--MySQL连接的依赖包-->
        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.11</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
        <!-- https://mybatis.org/mybatis-3/getting-started.html -->
        <!-- https://mybatis.org/mybatis-3/zh/index.html -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.6</version>
        </dependency>

        <!--mybatis Spring对接包 单独引入-->
        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.6</version>
        </dependency>

        <!--单元测试-->
        <!-- https://mvnrepository.com/artifact/junit/junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13</version>
            <scope>test</scope>
        </dependency>

        <!--日志输出-->
        <!-- https://mvnrepository.com/artifact/log4j/log4j -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

    </dependencies>

</project>

2、applicationContext.xml配置

将相关对象交给Spring管理

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

<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns="http://www.springframework.org/schema/beans"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context.xsd
	http://www.springframework.org/schema/tx
	http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!--配置开启依赖注入的注解解析器，扫包范围-->
    <context:component-scan base-package="rui.db"/>

    <!--加载属性配置文件-->
    <context:property-placeholder location="classpath:jdbc.Properties"/>

    <!--配置数据源-->
    <bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <!--最小连接数-->
        <property name="initialSize" value="${jdbc.pool.initialSize}"/>
        <!--最小空闲连接数-->
        <property name="minIdle" value="${jdbc.pool.minIdle}"/>
        <!--最大并发使用数-->
        <property name="maxActive" value="${jdbc.pool.maxActive}"/>
        <!--最大等待时间-->
        <property name="maxWait" value="${jdbc.pool.maxWait}"/>
    </bean>

    <!--配置事务管理器,使用jdbc数据源的事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="druidDataSource"/>
    </bean>

    <!--开启基于注解的事务管理方式-->
    <tx:annotation-driven transaction-manager="transactionManager"/>

    <!--myBatis和Spring整合，定义sessionFactory，配置所用数据源和主配置文件位置-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="druidDataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <!--自动生成Dao接口的代理实现类，注入到Spring中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="rui.db.Dao"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>

</beans>

3、调用测试

    //和Spring集成之后的测试，通过Spring直接获取到数据访问接口，无需通过SqlSession
    @Test
    public void TestMyBatis_04() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        ex_CustomerDao dao = (ex_CustomerDao) context.getBean("ex_CustomerDao");
        ex_Customer item = dao.findByKey("C001");
        System.out.println(item.toString());
        System.out.println("测试完成4");
    }