Spring多数据源配置

最新推荐文章于 2025-06-23 09:14:18 发布

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博客介绍了Spring与Mybatis多数据源的配置方法。包括引入关键jar包，如mybatis-spring 1.2.0等；配置jdbc.properties文件；设置Dao层目录结构；进行mybatis相关配置；关键配置spring - database.xml，针对不同数据源采用不同SqlSessionFaction处理。还提及单元测试及结果，并给出深入讲解参考链接。

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不多说，配置如下：
1:引入关键jar包：
mybatis-spring 1.2.0,mybatis 3.2.0+、mysql-connector-java 5.1.27

2:配置jdbc.properties文件，配置如下：
在这里插入图片描述
3:Dao层目录结构如下：

4:mybatis下相关配置：

5:关键配置spring-database.xml:

<?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 http://www.springframework.org/schema/context/spring-context.xsd">
    <context:property-placeholder location="classpath:conf/jobjdbc.properties"/>
    <bean id="dataSource1" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${jdbc.db1.driverClassName}" />
        <property name="url" value="${jdbc.db1.url}" />
        <property name="username" value="${jdbc.db1.username}" />
        <property name="password" value="${jdbc.db1.password}" />
        <property name="maxActive" value="100"></property>
        <property name="maxIdle" value="100"></property>
        <property name="maxWait" value="1000"></property>
        <property name="timeBetweenEvictionRunsMillis" value="5000"></property>
        <property name="testWhileIdle" value="true"></property>
        <property name="testOnBorrow" value="true"></property>
        <property name="testOnReturn" value="true"></property>
        <property name="validationQuery">
            <value>select 1</value>
        </property>
    </bean>
    <bean id="sqlSessionFactory1" class="org.mybatis.spring.SqlSessionFactoryBean" scope="prototype">
        <property name="dataSource" ref="dataSource1" />
        <property name="mapperLocations" value="classpath:mybatis/student.xml" />
    </bean>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.myspring.dao.datasource1.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory1"/>
    </bean>
    <bean id="dataSource2" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${jdbc.db2.driverClassName}" />
        <property name="url" value="${jdbc.db2.url}" />
        <property name="username" value="${jdbc.db2.username}" />
        <property name="password" value="${jdbc.db2.password}" />
        <property name="maxActive" value="100"></property>
        <property name="maxIdle" value="100"></property>
        <property name="maxWait" value="100"></property>
        <property name="timeBetweenEvictionRunsMillis" value="5000"></property>
        <property name="testWhileIdle" value="true"></property>
        <property name="testOnBorrow" value="true"></property>
        <property name="testOnReturn" value="true"></property>
        <property name="validationQuery">
            <value>select 1</value>
        </property>
    </bean>
    <bean id="sqlSessionFactory2" class="org.mybatis.spring.SqlSessionFactoryBean" scope="prototype">
        <property name="dataSource" ref="dataSource2" />
        <property name="mapperLocations" value="classpath:mybatis/user.xml" />
    </bean>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.myspring.dao.datasource2.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory2"/>
    </bean>
</beans>

说明：针对不同数据源，采用不同的SqlSessionFaction进行处理，2套配置分开。

6:单元测试：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(value = "classpath:spring-database.xml")
public class TestDataSource {
    @Resource
    private StudentDao studentDao;
    @Resource
    private UserDao userDao;

    @Test
    public void test0(){
        System.out.println("Student size = "+studentDao.getStudentCount());
        System.out.println("User size = "+userDao.getUserCount());
    }
}

7:单元测试结果：
在这里插入图片描述
更多深入讲解参考：http://www.mybatis.org/spring/zh/factorybean.html